PHP - Ask For A Simple Regexp Question!
I saw an example when i was learning pcre recently. It is in dot chapter and its address is at http://php.net/manua...ference.dot.php. The codes like this:
Consider, preg_match_all("/<img.*>/", $htmlfile, $match); preg_match_all("/(*ANY)<img.*>/", $htmlfile, $match); Now, any character that could possibly be seen as a newline will be interpreted as a newline by the PCRE.My question is "Does the dot character in pattern preg_match_all("/(*ANY)<img.*>/", $htmlfile, $match) really match newline?" I have thought quite some time but still don't know why. Can anyone help solve this question for me? Thanks! Similar TutorialsI've seen this, Code: [Select] <?php } ?> in a lot of scripts at the very end of the script. What does this piece of code do? I'm teaching myself php and mysql -- and my coding is a little rough. But what i'm trying to do is display information from a mysql table in another table on a website. I can do this just fine simply displaying the table, but i want a little something different. I am only displaying one column of the table, instead of displaying it all in one column, i want to display the information in 5 columns. for example..... the table from mysql has names scott, john, james, mary, simon. with the code I have i can make it display like this: scott scott scott scott scott john john john john john james james james james james mary mary mary mary mary simon simon simon simon simon i want it to diplay like this: scott john james mary simon new names will continue down here is my code: <?php require ("connectigb.php"); $result = mysql_query ("SELECT pledgeName FROM pledgewall"); $fields_num = mysql_num_fields($result); echo "<center> <h1>TSA It Gets Better Pledge Wall</h1>"; echo "<table border='1' align='center' style='width:960px;'><tr>"; while($row = mysql_fetch_row($result)) { echo "<tr>"; // $row is array... foreach( .. ) puts every element // of $row to $cell variable foreach($row as $cell) if ($cell != "") { for ($j=0; $j<5; $j++) { echo "<td>$cell</td>"; } } echo "</tr>\n"; } mysql_free_result($result); echo "</table></center>"; ?> any ideas on what i can do here, i'm sure this is a simply fix. i just haven't come across it yet. thanks for the help in advance. what does the # symbol do in php(e.x index.php?cat=1#privacy)? How can i use it? From what i 've seen you use it for changing a whole div without reloading the page like tabs.. Hi,
I am trying to convert a php function into perl and need to understand the following line in red :
function pagination($query, $per_page = 10,$page = 1, $url = '?'){ $query = "SELECT COUNT(*) as `num` FROM {$query}"; $row = mysql_fetch_array(mysql_query($query)); $total = $row['num']; $adjacents = "2"; $page = ($page == 0 ? 1 : $page); $start = ($page - 1) * $per_page; $prev = $page - 1; $next = $page + 1; $lastpage = ceil($total/$per_page); $lpm1 = $lastpage - 1; $pagination = ""; if($lastpage > 1) { ......................................... What will be the output of this line above in red. Thank you very much. Regards. Tonya Hello there fellow programmers, I was just wondering if there was any difference between doing this: Code: [Select] echo "Say Something Here"; and this Code: [Select] echo "Say "; echo "Something "; echo "Here"; Thank you in advance. Notice: I am aware of the fact that they will output the same thing, my question is regarding resources. Hello to everyone I would like to ask for this simple question.. Im trying to put if and else condition on my php code. However this condition is not working.. Code: [Select] if($file == #3#){ echo "No results found"; }else{ echo "results has been found"; } This variable $file is the result after i used an API.. If the API does not see any results they would return #3# as the result. This means they returned a transaction code of 3 which you can see here http://developer.textapp.net/WebService/TransactionCodes.aspx means that there was nothing to return. The condition does not function well even if i make 3 or #3# as part of the condition. Can you help me guys? thanks Lets say I have: $var=5; What would an output look like to get me: 1<br> 2<br> 3<br> 4<br> 5<br> Im at a complete loss! Thanks! if someone can help me out with this, its quite simple but I can't seem to get it to work.. Basically, this is the code I have for now, the issue is if I have 0 product or items, I don't want the sorting option to show up on the page, from the code below, what line can I add tosay that if there is no products in a category, not to show the SORT feature. thanks in advance if anyone can help. {if isset($orderby) AND isset($orderway)} <!-- Sort products --> {if isset($smarty.get.id_category) && $smarty.get.id_category} {assign var='request' value=$link->getPaginationLink('category', $category, false, true)} {elseif isset($smarty.get.id_manufacturer) && $smarty.get.id_manufacturer} {assign var='request' value=$link->getPaginationLink('manufacturer', $manufacturer, false, true)} {elseif isset($smarty.get.id_supplier) && $smarty.get.id_supplier} {assign var='request' value=$link->getPaginationLink('supplier', $supplier, false, true)} {else} {assign var='request' value=$link->getPaginationLink(false, false, false, true)} {/if} <form id="productsSortForm" action="{$request|escape:'htmlall':'UTF-8'}"> <select id="selectPrductSort" onchange="document.location.href = $(this).val();"> <option value="{$link->addSortDetails($request, $orderbydefault, $orderwaydefault)|escape:'htmlall':'UTF-8'}" {if $orderby eq $orderbydefault}selected="selected"{/if}>{l s='--'}</option> {if !$PS_CATALOG_MODE} <option value="{$link->addSortDetails($request, 'price', 'asc')|escape:'htmlall':'UTF-8'}" {if $orderby eq 'price' AND $orderway eq 'asc'}selected="selected"{/if}>{l s='Price: lowest first'}</option> <option value="{$link->addSortDetails($request, 'price', 'desc')|escape:'htmlall':'UTF-8'}" {if $orderby eq 'price' AND $orderway eq 'desc'}selected="selected"{/if}>{l s='Price: highest first'}</option> {/if} <option value="{$link->addSortDetails($request, 'name', 'asc')|escape:'htmlall':'UTF-8'}" {if $orderby eq 'name' AND $orderway eq 'asc'}selected="selected"{/if}>{l s='Product Name: A to Z'}</option> <option value="{$link->addSortDetails($request, 'name', 'desc')|escape:'htmlall':'UTF-8'}" {if $orderby eq 'name' AND $orderway eq 'desc'}selected="selected"{/if}>{l s='Product Name: Z to A'}</option> {if !$PS_CATALOG_MODE} <option value="{$link->addSortDetails($request, 'quantity', 'desc')|escape:'htmlall':'UTF-8'}" {if $orderby eq 'quantity' AND $orderway eq 'desc'}selected="selected"{/if}>{l s='In-stock first'}</option> {/if} </select> <label for="selectPrductSort">{l s='Sort by'}</label> </form> <!-- /Sort products --> {/if} hello all I'm VERY new to php and I just have a simple question how do I bold the output text of this string echo $row['name']."<BR>"; Hi guys, this function below is for card validation, however anycard i enter i get the invalid card number, this is not connected to any gateways, this is just an Luhn card validation demonstration. can you tell me please why i get that? <?php if ($_POST['pay']) { $cardNo = addslashes(strip_tags($_POST['cardNo'])); function luhnCheck($cardNo) { $cardNo = str_replace(" ", "", trim($cardNo)); if(!is_numeric($cardNo) or strlen($cardNo)>19) return false; $skip = $newNum = $total = 0; for($i=0;$i<=(strlen($cardNo)-1);$i++) { if($skip ==0) { $tmpNum = ($cardNo[$i]*2); $total += (strlen($tmpNum)==2 ? (substr($tmpNum, 0, 1)+substr($tmpNum, 1)) : $tmpNum); $skip = 1; }else{ $total += $cardNo[$i]; $skip = 0; } } return (($total % 10) == 0); } /* Example Usage */ if(luhnCheck($_GET['cc'])) { echo("Valid Number."); }else{ echo("Invalid Number."); } } ?> <form name="confirm" method="post" action=""> <input type="text" name="cardNo"> <input type="submit" name="pay" value="Pay Now"> </form> I know it could be a issue with this line if(luhnCheck($_GET['cc'])) { but im wondering where should and how put this cc in my form? regards Hi. I have an ID in md5 format but in the database its not. I pass the md5 ID to a page and then I am trying to load the correct record via a look up in the database of that ID. Im wondering is this code possible? <?php $query = mysql_query("SELECT * FROM table WHERE ".md5(tableID)." = $ID"); ?> Thanks Hello everyone! I am a new user and I have a simple question. How do I set a password for a user to log in to my site with PHP? I have no MySQL database just a iOS code/host app. I know this isn’t secure but only me and my friends are on the site. Any help is appreciated. Hi, I'm working on a product page and I got it to list all the products in one column of a table, but when I add a second column it just duplicates the first column. What do I need to change? Code: [Select] <?php require_once("functions.php"); ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Untitled Document</title> <style type="text/css"> td { border-top-style: solid; border-right-style: solid; border-bottom-style: solid; border-left-style: solid; border-top-color: #30C; border-right-color: #30C; border-bottom-color: #30C; border-left-color: #30C; } </style> </head> <body> <form action="" method="post" name="catalog"> <?php DatabaseConnection(); $query = "SELECT * FROM treats"; $result_set = mysql_query($query) or die(mysql_error()); $output = "<table>"; while ($row = mysql_fetch_array($result_set)) { $output .= (" <tr> <td width=\"400px\">" . $row['product_title']."<br /> ".$row['product_Description']."<br />" .$row['price'] . "<br /> Quantity: <input name=\"quantity\" type=\"text\" size=\"2\" /> </td> <td width=\"400px\">" . $row['product_title']."<br /> ".$row['product_Description']."<br />" .$row['price'] . "<br /> Quantity: <input name=\"quantity\" type=\"text\" size=\"2\" /> </td> </tr> "); } $output .= "</table>"; echo $output; ?> </form> </body> </html> I can't figure out why im getting an error with this code. if ($notif = mysql_query("SELECT * FROM notifications_1 WHERE recieverid='". $_SESSION['id']."' ORDER BY read ASC, id DESC") or die (mysql_error())); { Code: [Select] You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'read ASC, id DESC' at line 1 Hey! I have a drop down field for my "register" form, but this is clearly easy to edit, I just used tamperdata for firefox and yeah...pretty easy, is there any way that you could prevent tampering with the values when submitting this form!? Hi, I just wanted to know how posting works?. i know how to sort of post and get info.. What i want to know is: is it possible to post something from a folder structure like so: http://wwww.xxx.com/postfolder1/postfolder2/postfolder3/postfolder4/form.php // this is the file that posts.. lets say! a username. to http://www.xxx.com/notpostfolder1/notpostfolder2/notpostfolder3/notpostfolder4/index.php // the file that gets the post : The username.. or is a php database the only answer to transfer the information? i also just discovered that in cookies if i ad path/ the cookie is valid through out the site.. is ther something like this for Post and get?? Hello all it is my 1st post so welcome me i need to make php check if the number is 3 decimals and the last digit is 0. if it is 0 it will echo something if it is not 0 then it will echo something else i came up with this code but i dont know how to make it check if the decimal has a trail of 0 (zero) Code: [Select] <?php if(strpos($Price,".090") !== false){ echo "there is 0 at the end of the price"; //here code to remove the 0 if it is possible }else{ echo "there is no 0 at the end of the price"; // echo the normal price } ?> this will work correctly for the price $4.090 , 12.090 etc but how can i do it in php so it will check if there is 0 at the end of the decimal? SELECT * FROM `table1` VS SELECT * FROM table1 Which one is the best one to be used? n what is the difference? Is using backticks can prevent me from sql injection which means better to use?? thanks in advance Having an issue with this code, there are 3 parts and it is a simple guestbook type thing. But my problem is that it worked the first time I signed the guestbook but now its saying Unable to create the table. Error code 1050: Table 'visitors' already exists << I know it already exists but WHY is it trying to create it again? << Heres the code Code: [Select] <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Guest Book</title> </head> <body> <?php if (empty($_GET['first_name']) || empty($_GET['last_name'])) die("<p>You must enter your first and last name! Click your browser's Back button to return to the Guest Book form.</p>"); $DBConnect = @mysqli_connect("localhost", "***********", "***********") Or die("<p>Unable to connect to the database server.</p>" . "<p>Error code " . mysqli_connect_errno() . ": " . mysqli_connect_error()) . "</p>"; $DBName = "guestbook"; if (!@mysqli_select_db($DBConnect, $DBName)) { $SQLstring = "CREATE DATABASE $DBName"; $QueryResult = mysqli_query($DBConnect, $SQLstring) Or die("<p>Unable to execute the query.</p>" . "<p>Error code " . mysqli_errno($DBConnect) . ": " . mysqli_error($DBConnect)) . "</p>"; echo "<p>You are the first visitor!</p>"; mysqli_select_db($DBConnect, $DBName); } $TableName = "visitors"; $SQLstring = "SELECT * FROM $TableName"; if (!$QueryResult) { $SQLstring = "CREATE TABLE $TableName (countID SMALLINT NOT NULL AUTO_INCREMENT PRIMARY KEY, last_name VARCHAR(40), first_name VARCHAR(40))"; $QueryResult = mysqli_query($DBConnect, $SQLstring) Or die("<p>Unable to create the table.</p>" . "<p>Error code " . mysqli_errno($DBConnect) . ": " . mysqli_error($DBConnect)) . "</p>"; } $LastName = addslashes($_GET['last_name']); $FirstName = addslashes($_GET['first_name']); $SQLstring = "INSERT INTO $TableName VALUES(NULL, '$LastName', '$FirstName')"; $QueryResult = mysqli_query($DBConnect, $SQLstring) Or die("<p>Unable to execute the query.</p>" . "<p>Error code " . mysqli_errno($DBConnect) . ": " . mysqli_error($DBConnect)) . "</p>"; echo "<h1>Thank you for signing our guest book!</h1>"; mysqli_close($DBConnect); ?> </body> </html> Can someone please point my to the right direction. Getting frustrated and I am assuming it is something quite simple i am overlooking. Thanks in advance. i saw this in a php function page he http://php.net/manual/en/function.stristr.php the line is if(stristr($string, 'earth') === FALSE) { specifically this this code <?php $string = 'Hello World!'; if(stristr($string, 'earth') === FALSE) { echo '"earth" not found in string'; } // outputs: "earth" not found in string ?> what is the significance of the '===' in there does it mean something? is there any difference from the '==' or the '=' ? |