PHP - Function Trouble

I need to call usort from a class function, and I'm puzzled about how to define the comparison function.

I've tried to define the comparison function in the same class, but I can't get usort to call it. I found one hint that it will work if I make the comparison function static, but I tried that, and it didn't work for me.

If I define the comparison function outside the class, it won't have access to object properties that it needs to operate.

The only solution I can think of is to define the comparison function outside the class and put the object properties it needs in globals. Is there a cleaner way to do this?

I have this function completely written in my class file that I am working on.  The point to this function is to be able to check the login of a user or administrator for either of the control panels associated with my site.

It will check the session intime as well as the page / module referenced.  Once it passes all those checks, it will check and ensure the emailaddress/password stored in the current session still holds true and the account is still active...  if the account is still active it will update the lastActivity as well as update all of the session variables with what is currently in the database.

What I am looking for is basically a look at the function, see if it looks good..  If there is any part to it that could create security holes for the site just off the login function itself...

Usage: $q->validUser($_SESSION['user'], $_mod);

<?php
 function validUser($sess, $p) {

if ($sess['inTime'] == '' && $p != 'login' && $p != 'logout') {
session_destroy();
$login = '0';
$_int = '';
return $login;
} else if ($sess['inTime'] < time()-3600 && $p != 'login') {
$sess['inTime'] = '';
session_destroy();
$this->check_login($sess, $p);
} else {
$this->user = $sess['emailAddress'];
$this->pass = $sess['password'];

$login = $this->sql_query("SELECT * FROM users WHERE emailAddress = '".$this->user."' AND password = '".$this->pass."' 
   AND status = '1' LIMIT '1'");
if ($login = $this->sql_numrows($login) < 1) {
$sess['inTime'] == '';
session_destroy();
$login = '0';
} else {
// logged in, lets update the database for last_activity AND the session.

$this->sql_query("UDATE users SET lastActivity = '".now()."' WHERE
  emailAddress = '".$this->user."'");
$login = $this->sql_query("SELECT * FROM users WHERE emailAddress = '".$this->user."' AND password = '".$this->pass."' 
       AND status = '1' LIMIT '1'");
$login = mysql_fetch_assoc($login);
foreach ($login as $key => $value)
{ 
$sess[$key] = $value;
}
$sess['inTime'] = time();
$login = '1';
}
return $login;
}
}

?>

That is the main function, sql_query and sql_numrows is:

<?php
function sql_query($query = "", $transaction = FALSE) {
unset($this->query_result);

if ($query != "") {
$this->num_queries++;
if ($transation == BEGIN_TRANSACTION && !$this->in_transation) {
$result = mysql_query("BEGIN", $this->db_connect_id);
if (!$result) {
return false;
}
$this->in_transaction = TRUE;
}

$this->query_result = mysql_query($query, $this->db_connect_id);
} else {
if ($transaction == END_TRANSACTION && $this->in_transaction ) {
$result = mysql_query("COMMIT", $this->db_connect_id);
}
}
if ($this->query_result) {
unset($this->row[$this->query_result]);
unset($this->rowset[$this->query_result]);

if ($transaction == END_TRANSACTION && $this->in_transaction ) {
$this->in_transaction = FALSE;
if (!mysql_query("COMMIT", $this->db_connect_id)) {
mysql_query("ROLLBACK", $this->db_connect_id);
return false;
}
}
return $this->query_result;
} else {
if ($this->in_transaction ) {
mysql_query("ROLLBACK", $this->db_connect_id);
$this->in_transaction = FALSE;
}
return false;
}
}

function sql_numrows($query_id = 0) {
if(!$query_id) {
$query_id = $this->query_result;
}
return ($query_id) ? mysql_num_rows($query_id) : false;
} ?>

Any insight that can help to benefit these functions would be appreciated.

Question 1) Is the only and proper way to call a parent function "parent::function()"?  Are there other/better ways from within a child function?

Question 2) What are the deciding factors for when to make a function or attribute static?  How do you make that decision?  Assuming 5.3...

Thanks.

When I put this chunk of code into it's own function:


function fetch_all ($dbc, $query) {

include ('knuffix_list_func.php');

pagination_start ($dbc, $query);

$offset = $pag_array[0];

$rows_per_page = $pag_array[1];

$query = $query . " LIMIT $offset, $rows_per_page";

echo "test query: " . $query;

knuffix_list ($query, $dbc);

pagination_end ($pag_array);
}


And when I echo out the query as you can see in the example, then I notice that the variables $offset and $rows_per_page never get appended.
I set the variable $pag_array to a global inside the function pagination_start(). It usually works when I DON'T wrap a function around this chunk of code, but if I do wrap a function around everything then the global suddenly won't work anymore.

Btw, this also won't work if I wrap a function around the function DECLARATIONS.

Any ideas, how I could make it work?

I want to define a function instead of repeating query in all my php pages. I call a function by passing an $id value and from that function i have to get all the info related to that id, like name, description and uom.    I am trying to do this, but i dont know how to get these values seperately.   here is my function  

function items($item_id)
{
$details = array(); 
$result = mysql_query("select item_id, name, uom, description from items where item_id=".$item_id."") or die (mysql_error());
while($row = mysql_fetch_array($result))
{
$details[] = array((stripslashes($row['name'])), (stripslashes($row['uom'])), (stripslashes($row['description'])));
}
return $details;
}

and i call my function like this

$info = items($id);

Can somebody guide me in this    

im using a function which connects to a db called 'comments' and then inside that function i again called another function that will connect to the db 'main' to get avatars.... but as i put Code: [Select]
mysql_select_db("main") or die(mysql_error()); on the new function, the original function stops to fetch rows.

i tried to remove "mysql_select_db("main") or die(mysql_error());" and used the new function to return some text only and it worked, so i guess the connection to the db was the problem... i tried doing Code: [Select]
mysql_query("SELECT * FROM  main.avatar
INNER JOIN main.list ON main.avatar.title=main.list.id
WHERE main.avatar.page_id='$id'"); but it also didnt work

Hi all, I want to call a javascript function from a php function like this:

        public function Buscar()
        {
            $HoraInicio = $_POST['edtHoraInicio'];
            $HoraFin = $_POST['edtHoraFin'];
            $FechaInicio = $_POST['edtFec1'];
            $FechaFin = $_POST['edtFec2'];

            $FechaMax = $FechaFin." ".$HoraFin.":00";
            $FechaMin = $FechaInicio." ".$HoraInicio.":00";

            $_GET["FechaMax"] = $FechaMax;
            $_GET["FechaMin"] = $FechaMin;

            echo $FechaMin;

            echo "<script language=javascript>alert('Hi.')</script>";
           
        }

but the function Buscar never show the alert but shows the $FechaMin

I hopu u guys can help me out with this probem

Thanks,

Siddhartha

I've followed the PHP Freaks pagination tutorial which you can find here.

And I also got it to work, the only problem is that the script won't work when I use the query outside of the function.

Here's the function:



<?php 
function knuffix_list ($query, $dbc) {

// find out how many rows are in the table:
$query_row = "SELECT COUNT(*) FROM con";
$query_run = mysqli_query ($dbc, $query_row);
$row = mysqli_fetch_row($query_run);
$num_rows = $row[0];

// number of rows to show per page
$rows_per_page = 5;

// find total pages -> ceil for rounding up
$total_pages = ceil($num_rows / $rows_per_page);

// get the current page or set a default
if (isset($_GET['current_page']) && is_numeric($_GET['current_page'])) {

// make it an INT if it isn't

$current_page = (int) $_GET['current_page'];

} else {

// default page number

$current_page = 1;

}


// if current page is greater than total pages then set current page to last page
if ($current_page > $total_pages) {

$current_page = $total_pages;

}

// if current page is less than first page then set current page to first page
if ($current_page < 1) {

$current_page = 1;

}

// the offset of the list, based on current page
$offset = (($current_page - 1) * $rows_per_page);

echo "test " . $query;

// SCRIPT ONLY WORKS IF I INSERT QUERY HERE

$query

= "SELECT * FROM con, user WHERE con.user_id = user.user_id ORDER BY contributed_date DESC LIMIT $offset, $rows_per_page";

$data = mysqli_query ($dbc, $query) or die (mysqli_error ($dbc));

// Loop through the array of data

while ($row = mysqli_fetch_array ($data)) {

global $array;

// Variables for the table

$con_id = $row['con_id'];

$likes_count = $row['likes'];

$dislikes_count = $row['dislikes'];

$dbuser_name = $row['nickname'];

$dbuser_avatar = $row['avatar'];

$user_id = $row['user_id'];

// The TABLE

echo "<table padding='0' margin='0' class='knuffixTable'>";

echo "<tr><td width='65px' height='64px' class='avatar_bg' rowspan='2' colpan='2'><img src='avatar/$dbuser_avatar' alt='avatar' /></td>";

echo "<td class='knuffix_username'><strong><a href='profile.php?user=$dbuser_name' title='Profile of $dbuser_name'>" . $dbuser_name . "</a> ___ " . $user_id . "____ <form action='' method='POST'><button type='submit' name='favorite' value='fav'>Favorite</button></form>";

echo "</strong><br />" . $row['category'] .  " | " . date('M d, Y', strtotime($row['contributed_date'])) . "</td></tr><tr><td>";

echo "<form action='' method='post'>

<button class='LikeButton' type='submit' name='likes' value='+1'>Likes</button>

<button class='DislikeButton' type='submit' name='dislikes' value='-1'>Dislikes</button>

<input type='hidden' name='hidden_con_id' value='" . $con_id . "' />

</form></td><td class='votes'>Y[" . $likes_count . "] | N[" . $dislikes_count . "]</td></tr>";

echo "<tr><td class='knuffix_name' colspan='3'><strong>" . htmlentities($row['name']) . "</strong><br /></td></tr>";

echo "<tr><td colspan='2' class='knuffix_contribution'><pre>" . $row['contribution'] . "</pre><br /></td></tr>";

echo "</table>";

// POST BUTTONS inside the table

$likes = $_POST['likes'];

$dislikes = $_POST['dislikes'];

$con_id = $_POST['hidden_con_id'];

$favorite = $_POST['favorite'];

$array = array ($likes, $dislikes, $con_id, $user_id, $favorite);

}

/********* build the pagination links *********/

// BACKWARD
// if not on page 1, show back links and show << link to go back to the very first page
if ($current_page > 1) {

echo " <a href='{$_SERVER['PHP_SELF']}?current_page=1'><<</a> ";

// get previous page number and show < link to go to previous

$prev_page = $current_page - 1;
 

echo " <a href='{$_SERVER['PHP_SELF']}?current_page=$prev_page'><</a> ";

}

// CURRENT
// range of number of links to show
$range = 3;

// loop to show links in the range of pages around current page
for ($x = ($current_page - $range); $x < (($current_page + $range) + 1); $x++) {

// if it's a valid page number...

if (($x > 0) && ($x <= $total_pages)) {

// if we're on current page

if ($x == $current_page) {

// highlight it but don't make a link out of it

echo "[<b>$x</b>]";

// if it's not the current page then make it a link

} else {

echo "<a href='{$_SERVER['PHP_SELF']}?current_page=$x'>$x</a>";

}

}
}


// FORWARD
// if not on the last page, show forward and last page links
if ($current_page != $total_pages) {

// get next page

$next_page = $current_page + 1;

// echo forward link for next page

echo " <a href='{$_SERVER['PHP_SELF']}?current_page=$next_page'>></a> ";

// echo forward link for last page

echo " <a href='{$_SERVER['PHP_SELF']}?current_page=$total_pages'>>></a> ";

}

/***** end building pagination links ****/

mysqli_close($dbc);

}

?>


As you can see above, the script will only work if I put the query right below the $offset variable and above the $data variable.

I put the test echo above the query to see how the query looks like when I induce the query from the outside through the function parenthesis into the function, and this is what I get printed out:


test SELECT * FROM con, user WHERE con.user_id = user.user_id ORDER BY contributed_date DESC LIMIT ,


Obviously the $offset and the $rows_per_page variables are not set, when I induce the query from the outside into the function.

So in that sense my question is:

How can I induce the query from the outside into the function SO THAT the $offset and the $rows_per_page variables are set as well and NOT empty?


p.s.

I need the query outside of the function because I'm using a sort by category functionality.

Hi I have a table class and functions I want to call in another function but can't get it working. Some help will be very welcome.

It seesm that the new table class is not working in this function if I pass the values to it, I have tested the class, it does get the post values I post to it so $_POST['id'] are being received as well as all the other $_POST's but the table class and find function is not working, it works fine if I don't put it in a function..

function edit() {
   
   if (isset($error)){ $error.="Please fix the error(s) above";}
   else {

      if ($_POST['id'] <> "") { 
                   
         $update =& new table($db, 'publisher');

         $update->find($_POST['id']);
         $update->name       = $_POST['name'];
         $update->url        = $_POST['url'];
         $update->contact    = $_POST['contact'];
         $update->address    = $_POST['address'];
         $update->phone        = $_POST['phone'];
         $update->email        = $_POST['email'];
         $update->save();

         $error = "The Publisher has been edited";   
                }
   }
  }

Hi Chaps,

I have a PHP FTP App, where users can log in using a unique code and a password.

Their unique code corresponds to an FTP folder, e.g.
Quote

\FTP_Root\Customer A & Co\


So when the user logs in, they can see their FTP directory and contents, in this case an Inbox and an Outbox.
This works as the FTP folder contains both an Inbox and an Outbox.

The problem I am having is when I try browsing within this directory (say the Inbox), ftp-chdir fails.

I have a hyperlink that sends a 'dir' parameter to the same ftp.php page, and if set, will attempt to change to the given directory.

So even though the URL Hyperlink reads:
Quote

....server.co.uk/ftp.php?dir=/FTP_Root/Customer A & Co/Inbox


When you click on this link, the page tries to load:
Quote

....server.co.uk/ftp.php?dir=/FTP_Root/Customer A


So my question is what do I need to change, the Hyperlink to read something like:
Quote

....server.co.uk/ftp.php?dir=/FTP_Root/Customer%20A%20&%20Co/Inbox



Do something to the ftp-chdir function, where I encode/decode/whatever to make sure it tries to change to the correct FTP directory?

Or exclude all ampersand entirely?

Hello everyone,

I am new to this forum and PHP world. Doing my first project, a pretty complicated one to start with. I will be needing your help a lot to accomplish it.
Here is the first one.

1. I have a certain field called 'country'
2. I have small flag icons for every country.

WHAT DO I WANT TO DO?

Example - If the country is U.S.A., the U.S. flag shows up and is a link to www.domain.com/usa
If the country is Germany, the German flags shows up and is a link to www.domain.com/germany
If the country is not set, no flag shows up. END.

How do I execute this?

This is what I am doing to get the image
<img src="images/flags/<?php echo $row_rsPilots['country']; ?>.gif" alt="" name="Flag" width="20" height="20" id="Flag" />

How do make it a link to www.domain.com/'country'

Thanks in advance

Building a website for work. I am struggling with the login for some reason. I`m using a lot of the same code as I did for my personal site and a few other websites I`ve programmed which has always worked. But for some reason, it isn`t working now. I`ve already told it to display to me the information that`s being processed and that is all correct (it even updates the database like it`s supposed to). It just won`t show the person being logged in, which defeats the purpose of logging in, yanno?

Here are all the files in question.

login.php
<?php
include "file_calls.php";
$title = "Business Name (Beta): Log In";
include "functions.php";
session_start();
echo "$title";
echo "<p>";
echo "Log into the Business Name website. Only authorized members of the Business Name Staff can log into the website.";
echo "<p>";
include "login_form.php";
?>

login_form.php
<?php
echo "<form action='logging.php' method='post'>";
echo "E-Mail Address:";
echo "<br><input type='text' name='email' size=60 maxlength=100>";
echo "<p>";
echo "Password:";
echo "<br><input type='password' name='pass' size=60 maxlength=25>";
echo "<p>";
$buttonlabel = "Log In";
include "formbutton_format.php";
echo "</form>";
?>


logging.php
<?php
include "file_calls.php";
$title = "Business Name (Beta): Logging In";
include "functions.php";
session_start();
echo "$title";
echo "<p>";
echo "Logging into the Business Name website. Only authorized members of the Business Name Staff can log into the website.";
echo "<p>";
$email = $_POST['email'];
$pass = $_POST['pass'];
$entry_date = strftime("%B\ %e\,\ %Y %I:%M:%S %p", time());

$res = mysql_query("SELECT id, memlev, pwd1, pwd2, email, name FROM user_data WHERE email='$email'");
$by = mysql_fetch_row($res);
mysql_free_result($res);

$log = $by[4];
$pas = $by[2];
$pas2 = $by[3];

if ($email && $pass) {
if ($by[0]) {
if ($by[1] == 2) {
$passwd = crypt($_REQUEST['pass'],$by[5]);
if ($pass == $pas2) {
mysql_query("UPDATE user_data SET lastlogin='$entry_date' WHERE email='$email'");
mysql_close($con);
header("Location: index.php");
}
elseif ($passwd != $pas) {
header("Location: nolog.php?logout=1&m=4");
}
}
elseif ($by[1] == 1) {
header("Location: nolog.php?logout=1&m=2");
}
elseif ($by[1] == 0) {
header("Location: nolog.php?logout=1&m=3");
}
}
elseif (!$by[0]) {
header("Location: nolog.php?logout=1&m=1");
}
}
elseif (!$email || !$pass) {
echo "<b>Error:</b> Both username and password must be entered in order to log in.";
echo "<p>";
include "login_form.php";
}
?>[/php

index.php
[php]<?php
include "file_calls.php";
$title = "Business Name (Beta)";
include "functions.php";
session_start();
echo "$title";
echo "<p>";
echo "This website is currently under construction. Thank you for your patience.";
echo "<p>";
if ($lev > 1) {
echo "Hello, $loggeduser !";
}
elseif ($lev < 2) {
echo "Not logged in.";
}
echo "<p>";
echo "$lev";
echo "<br>$loggeduser<br>$email";
?>

auth.php

<?php
  // Defines
 
  DEFINE('SESSION_MAGIC','sadhjasklsad2342');

  // Initialization
  @session_start();
  @ob_start();
  
 
    /*
      Redirects to another page
    */
    function Redirect($to) {

   @session_write_close();
   @ob_end_clean();
   @header("Location: $to");
    } 
 
     /*
        Deletes existing session
    */
function RemoveSession() {
$_SESSION = array();
if (isset($_COOKIE[session_name()])) {
   @setcookie(session_name(), '', time()+(60*60*24*365), '/');
}
}
    
/*
  Checks if user is logged in
*/ 
function isLoggedIn() {

return(isset($_SESSION['magic']) && ($_SESSION['magic']==SESSION_MAGIC));
}


 
    /* 
      read message count
    */
    function CountMessages($id) {
    
   if ($res=mysql_query("SELECT * FROM user_data WHERE email='$email'"))
   {
   $count=mysql_num_rows($res);
   mysql_free_result($res);    
   return($count);
   }
   return 0; 
    }
    
    /*
      Go login go!
    */
    function Login($email,$pass) {
   
    global $nmsg, $rows;
   
   $ok=false;
   if ($res=mysql_query("SELECT id, email, name, pwd1, pwd2, memlev FROM user_data WHERE email='$email' AND pwd2='$pass'"))
   {
   if ($rows=mysql_fetch_row($res)) {
    $_SESSION['sess_name'] = $rows[2];
$_SESSION['pass'] = $pass;
$_SESSION['gal'] = $rows[0];
$_SESSION['level2'] = $rows[5];
$_SESSION['email'] = $rows[1];
    $_SESSION['magic'] = SESSION_MAGIC;
    $nmsg = CountMessages($rows[0]);
    $ok=true;
   } else {
   include('login_failed.php');
   }
   mysql_free_result($res);
   }
   return($ok);
   }
   
       /*
      Terminates an existing session
    */
    function Logout() {
    @RemoveSession();
    @session_destroy();
    }

    /*
      Escape array using mysql
    */   
function Escape(&$arr)
{
 if (Count($arr)>0) {
    foreach($arr as $k => $v) {
        if (is_array($v)) {
            Escape($arr[$k]);
        }
        else {
            if (function_exists('get_magic_quotes')) {
                if(!get_magic_quotes_gpc()) {
                    $arr[$k] = stripslashes($v);
                }
            }
            $arr[$k] = mysql_real_escape_string($v);
        }
   }
      }
}

// -----------------------------------------------    
// Main
// -----------------------------------------------    

   Escape($_POST);
   Escape($_GET);
   Escape($_COOKIE);
   Escape($_REQUEST);
   Escape($_GLOBALS);
   Escape($_SERVER);
   
?>


file_calls.php
<?php
include "info_con.php";
include "auth.php";
?>


functions.php

<?php
echo "<title>$title</title>";




$lev=isset($_SESSION['level2'])?$_SESSION['level2']:0;
$logged=isset($_SESSION['gal'])?$_SESSION['gal']:0;
$loggeduser=$_SESSION['sess_name'];
$nmsg = 0;
$rows = isset($_SESSION['rows'])?$_SESSION['rows']:array();
$email = isset($_SESSION['email'])?$_SESSION['email']:'';
$pass = isset($_SESSION['pass'])?$_SESSION['pass']:'';






function rand_chars($c, $l, $u = FALSE) {
  if (!$u) for ($s = '', $i = 0, $z = strlen($c)-1; $i < $l; $x = rand(0,$z), $s .= $c{$x}, $i++);
  else for ($i = 0, $z = strlen($c)-1, $s = $c{rand(0,$z)}, $i = 1; $i != $l; $x = rand(0,$z), $s .= $c{$x}, $s = ($s{$i} == $s{$i-1} ? substr($s,0,-1) : $s), $i=strlen($s));
  return $s;
}






function ShowLoggedInBar() {
global $email,$pass,$rows,$logid;

   $nmes="";
   if($nmsg){
 $nmes="($nmsg New)";
   }
   echo "Hello, $loggeduser !";
}








/* check if we are logging out */
if (isset($_REQUEST['logout'])) {
Logout();
}

/* check if already logged in */
if (isset($_SESSION['magic']) && ($_SESSION['magic']==SESSION_MAGIC)) {   
   ShowLoggedInBar();
}
else {

/* not logged in, is it a form post? */
if (isset($_REQUEST['email']) && isset($_REQUEST['pass'])) {
$email = $_REQUEST['email'];
$pass = crypt($_REQUEST['pass'],$email);
Login($email,$pass);
} else {

}
}
?>


Can anyone see why it works on everything but getting the person logged in?

Hi guys,

Sorry - this might more belong in the SQL section but I think it is PHP related. I am trying to update a table with:

$sql="UPDATE $tbl_name SET (gender, description)  VALUES ('$gender', '$description') WHERE image = ('$photoname')";
$result=mysql_query($sql);

Needless to say, its not working. Only odd thing is that the $photoname variable is sent with a hidden field on the previous form. I can echo all 3 varaibles though and get the right results. I just dont know why it isnt updating - seems pretty standard to me.

Can anyone help?

Thanks!

what am i doing wrong? my watermark function won't work but i am calling the function right i think.
if (move_uploaded_file($_FILES['uploadedfile']['tmp_name'], $target_path)) {
   
        watermark($file_path,$watermark,'png');
          mysql_query("INSERT INTO gallery VALUES ('', '$username', '$time', '$caption' , '$file_path' )");
          //echo $file_size.' is how big your file is. It was transferred.';
          header('Location: gallery.php');
      }

Hi guys!

I'm trying to parse an RSS feed using SimpleXML, but I'm having trouble  lol

Here's my code:
$feed = file_get_contents("http://engadget.com/rss.xml");

$xml = new SimpleXMLElement($feed);

echo $xml->rss->channel->item[0]->title;

I'm expecting it to echo the title of the first item in the RSS feed, but when I run it, I just see a blank page. Tell me what I'm doing wrong!