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Get operating system info

...perating system info. I have not been able to find out how to do that with PHP, and wanted to try to figure it out. 7 Answe...
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Which $_SERVER variables are safe?

...lett.org/blog/2006/mar/server-name-versus-http-host. ‡ See https://bugs.php.net/bug.php?id=64457, http://httpd.apache.org/docs/current/mod/core.html#usecanonicalphysicalport, http://httpd.apache.org/docs/2.4/mod/core.html#comment_999 Entirely arbitrary user controlled values These values are no...
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What is stdClass in PHP?

... stdClass is PHP's generic empty class, kind of like Object in Java or object in Python (Edit: but not actually used as universal base class; thanks @Ciaran for pointing this out). It is useful for anonymous objects, dynamic properties, ...
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instantiate a class from a variable in PHP?

...r as I can tell) must declare the full namespace path of a class. MyClass.php namespace com\company\lib; class MyClass { } index.php namespace com\company\lib; //Works fine $i = new MyClass(); $cname = 'MyClass'; //Errors //$i = new $cname; //Works fine $cname = "com\\company\\lib\\".$cname...
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Create a CSV File for a user in PHP

...ment; filename=file.csv"); function outputCSV($data) { $output = fopen("php://output", "wb"); foreach ($data as $row) fputcsv($output, $row); // here you can change delimiter/enclosure fclose($output); } outputCSV(array( array("name 1", "age 1", "city 1"), array("name 2", "age 2", "c...
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Convert a PHP object to an associative array

... (what you asked for) it's fine. Also see this in-depth blog post: Fast PHP Object to Array conversion share | improve this answer | follow | ...
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AJAX POST and Plus Sign ( + ) — How to Encode?

I'm POSTing the contents of a form field via AJAX to a PHP script and using JavaScript to escape(field_contents) . The problem is that any plus signs are being stripped out and replaced by spaces. How can I safely 'encode' the plus sign and then appropriately 'decode' it on the PHP side? ...
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Sending multipart/formdata with jQuery.ajax

I've got a problem sending a file to a serverside PHP-script using jQuery's ajax-function. It's possible to get the File-List with $('#fileinput').attr('files') but how is it possible to send this Data to the server? The resulting array ( $_POST ) on the serverside php-script is 0 ( NULL ) when us...
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How do you Encrypt and Decrypt a PHP String?

...s question made this mistake; as do many cryptography libraries written in PHP. You should avoid implementing your own cryptography, and instead use a secure library written by and reviewed by cryptography experts. Update: PHP 7.2 now provides libsodium! For best security, update your systems to us...
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Tips for debugging .htaccess rewrite rules

... and does what you intend with a fully range of test URIs. See regexpCheck.php below for a simple script that you can add to a private/test directory in your site to help you do this. I've kept this brief rather than pretty. Just past this into a file regexpCheck.php in a test directory to use it ...