just trying to learn PHP, needs a translation from older code

[kloy]

Hi Everyone,

I'm a designer just learning PHP.  While I'm learning I've found some great code snippets to use on my sites.

This is is supposed to randomly rotate images with in a folder.

I think it's written in PHP4 or older.  I was dated 2003.

 

Any help is appreciated

 

 

<?php
/*

*/// Make this the relative path to the images, like "../img" or "random/images/".
// If the images are in the same directory, leave it blank.
$folder = '';

// Space seperated list of extensions, you probably won't have to change this.
$exts = 'jpg jpeg png gif';

$files = array(); $i = -1; // Initialize some variables
if ('' == $folder) $folder = './';

$handle = opendir($folder);
$exts = explode(' ', $exts);
while (false !== ($file = readdir($handle))) {
foreach($exts as $ext) { // for each extension check the extension
if (preg_match('/\.'.$ext.'$/i', $file, $test)) { // faster than ereg, case insensitive
$files[] = $file; // it's good
++$i;
}
}
}
closedir($handle); // We're not using it anymore
mt_srand((double)microtime()*1000000); // seed for PHP < 4.2
$rand = mt_rand(0, $i); // $i was incremented as we went along

header('Location: '.$folder.$files[$rand]); // Voila!
?> 

[teamatomic]

see the man on rand() and scandir()

scandir is a v5 addition and does the same as the opendir/readdir/closedir

rand is now self-seeded as of v4.2

 

 

HTH

Teamatomic

[kloy]

huh? ...I'm too new at PHP to understand what you meant.

 

[teamatomic]

Look at the PHP manual for the functions

 

scandir

http://us.php.net/manual/en/function.scandir.php

 

rand

http://us.php.net/manual/en/function.rand.php

 

Look at the examples given. Compare them to what is in your script. Adjust accordingly.

 

If its still "huh" then I suggest a tutorial, start at page one and work through it until $huh == $uh_huh.

http://devzone.zend.com/article/627

http://www.w3schools.com/php/

 

 

HTH

Teamatomic