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Snippet Name: Random Image from Directory

Description: Spits out a random image path from a given directory.

Also see:
» Random banner picker
» Generate random string
» Rounded random numbers
» Random Pronounceable Passwords
» Pick Randomly from Array
» Weighted Random Choice

Comment: (none)

Language: PHP
Highlight Mode: PHP
Last Modified: March 16th, 2009

    $path_to_images = "/images/";  // path to your images
    $default_img = "image.gif";  // image to display if directory listing fails
    FUNCTION getRandomImage($thispath, $img) {
        IF ( $list = getImagesList($thispath) ) {
            MT_SRAND( (double)MICROTIME() * 1000000 );
            $num = ARRAY_RAND($list);
            $img = $list[$num];
        RETURN $thispath . $img;
    FUNCTION getImagesList($thispath) {
        $ctr = 0;
        IF ( $img_dir = @OPENDIR($thispath) ) {
            WHILE ( FALSE !== ($img_file = READDIR($img_dir)) ) {
                // can add checks for other image file types here
                IF ( PREG_MATCH("/(\.gif|\.jpg)$/", $img_file) ) {
                    $images[$ctr] = $img_file;
            RETURN $images;

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