Re: preg_match

Please keep the conversation on the list! On 27 Oct 2008, at 16:06, Alex Chamberlain wrote:

-----Original Message----- From: Stut [mailto:stuttle@gmail.com] Sent: 27 October 2008 15:54 To: Alex Chamberlain Cc: 'PHP General list' Subject: Re: [PHP] preg_match On 27 Oct 2008, at 15:46, Alex Chamberlain wrote:

Problem solved: function __autoload($c) { $m = array(); preg_match('/(?:^[A-Z][a-z]+)Controller/', $c, $m); if (count($m)) { require_once(realpath(FS_CONTROLLER . '/' . strtolower($m[0]) . '.inc.php')); } } However (perhaps a more appropriate question), do you think there is an easier/better way to do this??

See, that wasn't so hard was it!! Personally I'd have gone with something more like this... function __autoload($class) { if (substr($class, -10) == 'Controller') {

    // No need for realpath here, it's not doing anything useful
    // The _once is probably redundant too, but it may be required
    // depending on how your code is arranged.
    require FS_CONTROLLER.'/'.strtolower($class).'.inc.php';

} } ...but there's always more than one solution. -Stut

Ok, spurred on with the success so far (but not changing the form of my code just yet), I changed it to: function __autoload($c) { $m = array(); preg_match('/Fred(^[A-Z][a-zA-Z]+)/', $c, $m); if (count($m)) { require_once(realpath(FS_COMPONENT . '/' . strtolower($m[1]) . '.inc.php')); } var_dump($m); preg_match('/(?:^[A-Z][a-z]+)Controller/', $c, $m); if (count($m)) { require_once(realpath(FS_CONTROLLER . '/' . strtolower($m[0]) . '.inc.php')); } } With the aim of also matching anything starting with 'Fred'. It didn't work until I took the caret ^ out: function __autoload($c) { $m = array(); preg_match('/Fred([A-Z][a-zA-Z]+)/', $c, $m); if (count($m)) { require_once(realpath(FS_COMPONENT . '/' . strtolower($m[1]) . '.inc.php')); } var_dump($m); preg_match('/(?:^[A-Z][a-z]+)Controller/', $c, $m); if (count($m)) { require_once(realpath(FS_CONTROLLER . '/' . strtolower($m[0]) . '.inc.php')); } } What I don't understand is why I needed it in one, but not in another??

If you're going to use regular expressions you need to read the manual to understand how they work. There's a whole section of the manual that covers this - go read it to understand what the ^ means! -Stut -- http://stut.net/