DZone Snippets: php code

Sample date calculations

stancell (Algimantas Stancelis) — Fri, 27 Jul 2007 06:07:38 GMT



  Today:  


  Tomorrow:  


  1 week later:  


  1 month later:

Get file extension

stancell (Algimantas Stancelis) — Wed, 04 Oct 2006 09:09:14 GMT



function file_extension($filename)

{

    $path_info = pathinfo($filename);

    return $path_info['extension'];

}

Emulate register_globals off

stancell (Algimantas Stancelis) — Wed, 27 Sep 2006 15:57:39 GMT



function unregister_GLOBALS()

{

if (!ini_get('register_globals')) {

       return;

   }



   // Might want to change this perhaps to a nicer error

   if (isset($_REQUEST['GLOBALS']) || isset($_FILES['GLOBALS'])) {

       die('GLOBALS overwrite attempt detected');

   }



   // Variables that shouldn't be unset

   $noUnset = array('GLOBALS',  '_GET',

                     '_POST',    '_COOKIE',

                     '_REQUEST', '_SERVER',

                     '_ENV',    '_FILES');



   $input = array_merge($_GET,    $_POST,

                         $_COOKIE, $_SERVER,

                         $_ENV,    $_FILES,

                         isset($_SESSION) && is_array($_SESSION) ? $_SESSION : array());

  

   foreach ($input as $k => $v) {

       if (!in_array($k, $noUnset) && isset($GLOBALS[$k])) {

           unset($GLOBALS[$k]);

       }

   }

}



unregister_GLOBALS();

Source: http://www.zend.com/manual/faq.misc.php#faq.misc.registerglobals

Convert string to underscore_name

stancell (Algimantas Stancelis) — Sat, 23 Sep 2006 17:52:55 GMT

Converts "My House" to "my_house".
Converts " Peter's nice car " to "peters_nice_car".
Converts "_88" to "88"



function string_to_underscore_name($string)

{

    $string = preg_replace('/[\'"]/', '', $string);

    $string = preg_replace('/[^a-zA-Z0-9]+/', '_', $string);

    $string = trim($string, '_');

    $string = strtolower($string);

    

    return $string;

}

Check whether string begins with given string

stancell (Algimantas Stancelis) — Fri, 22 Sep 2006 15:19:46 GMT

Checks whether $string begins with $search



function string_begins_with($string, $search)

{

    return (strncmp($string, $search, strlen($search)) == 0);

}

string_ends_with

stancell (Algimantas Stancelis) — Wed, 25 May 2005 07:02:20 GMT



function string_ends_with($string, $ending)

{

    $len = strlen($ending);

    $string_end = substr($string, strlen($string) - $len);

   

    return $string_end == $ending;

}

Pretty urls

stancell (Algimantas Stancelis) — Wed, 25 May 2005 05:33:30 GMT

If url is 'index.php/hello' then $request will be 'hello'



$request = $_SERVER['PATH_INFO'];

if (isset($request[0]) && ($request[0] == '/')) {

    $request = substr($request, 1);

}