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  • mysql_num_rows(): supplied argument is not a valid MySQL result resource

    - by php-b-grader
    I am getting this error when I pass an invalid SQL string... I spent the last hour trying to find the problem assuming - It's not my SQL it must be the db handle... ANyway, I've now figured out that it was bad SQL... What I want to do is test the result of the mysql_query() for a valid resultset. I am simply using empty($result)... Is this the most effective test? Is there a more widely accepted method of testing a resultset for a valid result?

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  • (PHP) How do I get XMLReader behave like SimpleXML with Xpath? (Large directory like XML file)

    - by AESM
    So, I've got this huge XML file (10MB and up) that I want to parse and I figured instead of using SimpleXML, I'd better use XMLReader. Since the performance should be way better, right? But since XMLReader doesn't work with XPath... The xml is like this: <root name="bookmarks"> * <dir name="A directory"> <link name="blablabla"> <dir name="Sub directory"> ... </dir> * </dir> * <link name="another link"> </root> With SimpleXML combined with Xpath, I would simple do like: $xml = simplexml_load_file('/xmlFile.xml'); $xml-xpath('/root[@name]/dir[@name="A directory"]/dir[@name="Sub directory"]'); Which is so simple. But how do I do this with just using XMLReader? Ps. I'm converting the resulting node to DOM/SimpleXML to get its inner contents. Like this: $node = $xr-expand(); $dom = new DomDocument(); $n = $dom-importNode($node, true); $dom-appendChild($n); $selectedRoot = simplexml_import_dom($dom); Is this ok? ... Thanks!

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  • PHP - turning register globals off, what is the best way to go about fixing the code?

    - by user187809
    I am working on a old code base, where programmers assumed that register_globals will always be on. Hence variables are used without $_GET or $_POST prefix, pretty much in every page (the code base is huge, hundreds of scripts). I tried turning it off, but the very first script (login script) goes on an infinite loop. I understand that going through one script at a time, and one line at a time and fixing the variables is probably the only option (adding the prefix $_GET or $_POST as the case may be). Has anyone does this before? How did you go about doing it? Any advice?

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  • how to check if ssl exists on a webserver through php?

    - by sarmenhb
    i have this function here that i have in a class function enable_ssl() { if ($_SERVER[HTTPS]!="on") { $domain = "https://".$_SERVER['HTTP_HOST']."/".$_SERVER['SCRIPT_NAME']; header("Location: {$domain}"); } } but the problem is when the server doesnt have ssl installed and i have this function initiating the page redirects to a 404 page. i was wondering how i can have this function work only when ssl is installed and working is it possible? thanks. ps: did some google research and couldnt find much of anything.

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  • In PHP how do a translate a date to numerical format not knowing the format of the string beforehand

    - by stormist
    Examples of the translations I need to do: $stringDate = "November 2009"; $output = "11/09"; $stringDate = "October 1 2010"; $output = "10/01/2010"; $stringDate = "January 2010"; $output = "01/10"; $stringDate = "January 9 2010"; $output = "01/09/2010"; Note that I do not know which format the $stringDate will be in and the lack of commas in the month day year set. Thanks for any help anyone might offer.

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  • How to get aggregate days from PHP's DateTime::diff?

    - by razic
    $now = new DateTime('now'); $tomorrow = new DateTime('tomorrow'); $next_year = new DateTime('+1 year'); echo "<pre>"; print_r($now->diff($tomorrow)); print_r($now->diff($next_year)); echo "</pre>"; DateInterval Object ( [y] => 0 [m] => 0 [d] => 0 [h] => 10 [i] => 17 [s] => 14 [invert] => 0 [days] => 6015 ) DateInterval Object ( [y] => 1 [m] => 0 [d] => 0 [h] => 0 [i] => 0 [s] => 0 [invert] => 0 [days] => 6015 ) any ideas why 'days' shows 6015? why won't it show the total number of days? 1 year difference means nothing to me, since months have varying number of days.

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  • PHP reg expr. replace ALL URLs except img src URLs

    - by zilveer
    Hi, I have searched but havent been able to find my answer. It follows like: I would like to replace all URL in a string to links except the URLs within img src tag. I have a regular expression for replacing all the URLs to links, but would like it to NOT replace the URLs within img src="" attribute. How can i do this? Here is the code for replacing all URLs: /*** make sure there is an http:// on all URLs ***/ $str = preg_replace("/([^\w\/])(www\.[a-z0-9\-]+\.[a-z0-9\-]+)/i", "$1http://$2",$str); /*** make all URLs links ***/ $str = preg_replace("/([\w]+:\/\/[\w-?&;#~=\.\/\@]+[\w\/])/i","<a target=\"_blank\" href=\"$1\">$1</a>",$str); /Regards

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  • Wait 30 seconds in order to allow a new action on PHP and MySQL ???

    - by DomingoSL
    Hello, in my web page a user fill a form who send information to a MySql database. One of the data inputs sent is a date/time, in the format date('l jS \of F Y h:i:s A'); (I can change the format as needed) So when the user submits the form i wanna check if the actual time/date is 30 seconds more than the sent time/date in order to allow or not the submission of the form. Thanks!

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  • PHP, better to set the variable before if or use if/else?

    - by DssTrainer
    So a simple one that I just never could find a straight answer on. What is better (performance or otherwise): $var = false; If ($a == $b) { $var = true; } or If ($a == $b) { $var = true; } else { $var = false; } I've heard arguments for both ways. I find the first cleaner to ensure I have it set, and a little less code too. The pro being that you may only need to set it once without conditional. But the con being that if the argument is true, it gets set twice. I am assuming the second way is probably best practice

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  • Why do I need the isset() function in php?

    - by Chris
    I am trying to understand the difference between this: if (isset($_POST['Submit'])) { //do something } and if ($_POST['Submit']) { //do something } It seems to me that if the $_POST['Submit'] variable is true, then it is set. Why would I need the isset() function in this case?

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  • Header redirect and Session start() generating errors

    - by RPK
    I am using following code. I get errors: Warning: Cannot modify header information - headers already sent by (output started at /home/public_html/mc/cpanel/Source/verifylogin.php:11) Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /home/public_html/mv/cpanel/Source/verifylogin.php:11) Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/public_html/mv/cpanel/Source/verifylogin.php:11) <?php error_reporting(E_ALL^ E_NOTICE); ob_start(); require("../Lib/dbaccess.php"); $inQuery = "SELECT mhuserid, mhusername FROM cpanelusers WHERE mhusername = '". $_POST['UserName'] ."' AND mhpassword = '". hash('sha512', $_POST['Password']) ."'"; try { $Result = dbaccess::GetRows($inQuery); echo $Result; $NumRows = mysql_num_rows($Result); if ($NumRows > 0) { header("Location: http://www.example.com/cpanel/mainwindow.php"); session_start(); } else { header("Location: http://www.example.com/cpanel/"); echo "Last login attempt failed."; exit; } } catch(exception $e) { } ob_clean(); ?>

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  • PHP:How to send the original password to the user when he clicks forgot password which is encrypted

    - by kishore
    Hi all, I am using md5 to encrypt the passwords in my project. When user clicks on forgot password and submits his email,I have to send His password to him. But the password is encrypted using md5.Generating new password should not do. The initial password is very important. SO how can i decrypt the password or any other way to send him original password? Thanks in advance...

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  • Why is it inserting 0's instead of blank spaces into my DB using php?

    - by zeckdude
    I have an insert: $sql = 'INSERT into orders SET fax_int_prefix = "'.$_SESSION['fax_int_prefix'].'", fax_prefix = "'.$_SESSION['fax_prefix'].'", fax_first = "'.$_SESSION['fax_first'].'", fax_last = "'.$_SESSION['fax_last']; The value of all of these fields is that they are blank right before the insert. Here is an example of one of them I echo'd out just before the insert: $_SESSION[fax_prefix] = For some reason it inserts the integer 0, instead of a blank value or null, as it should. Why is it inserting 0's instead of blank spaces into my DB?

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