Delete temporary files

This example shows how to delete specific files after a given time span.
This works good for cleaning cached files.

// Define the folder to clean
// (keep trailing slashes)
$captchaFolder  = 'temp/';

// Filetypes to check (you can also use *.*)
$fileTypes      = '*.jpg';

// Here you can define after how many
// minutes the files should get deleted
$expire_time    = 20;

// Find all files of the given file type
foreach (glob($captchaFolder . $fileTypes) as $Filename) {

    // Read file creation time
    $FileCreationTime = filectime($Filename);

    // Calculate file age in seconds
    $FileAge = time() - $FileCreationTime;

    // Is the file older than the given time span?
    if ($FileAge > ($expire_time * 60)){

        // Now do something with the olders files...

        print "The file $Filename is older than $expire_time minutes\n";

        // For example deleting files:
        //unlink($Filename);
    }

}