How to display a mess of php images?

<?php

header("Content-Type:image/jpg");//Image encoding settings

function setWater($dst_path, $save_path, $text)

{

    // Example of creating an image

    $dst = imagecreatefromstring(file_get_contents($dst_path));

 

    // Text Style

    $font    = realpath('./font/arial.ttf');

    $black    = imagecolorallocate($dst, 255, 255, 255);    //Font color

 

    // Add text

    imagefttext($dst, 22, 0, 20, 40, $black, $font, $text);

 

    // Output images

    list($dst_w, $dst_h, $dst_type) = getimagesize($dst_path);

 

    switch ($dst_type) {

        //GIF

        case 1:

            //header('Content-Type: image/gif');

            $save_path = $save_path . $text .'.gif';

            imagegif($dst, $save_path, 90);

            break;

        //JPG

        case 2:

            //header('Content-Type: image/jpeg');

            $save_path = $save_path . $text .'.jpg';

            imagejpeg($dst, $save_path, 90);

            break;

        //PNG

        case 3:

            //header('Content-Type: image/png');

            $save_path = $save_path . $text .'.png';

            imagepng($dst, $save_path, 90);

            break;

        default:

            break;

    }

 

    imagedestroy($dst);

 

}

 

$dst_path = '7002.jpg';

//$text     = '7001';

//setWater($dst_path, './tmppic/', $text);

 

for ($i=1; $i<=240; $i++) {

    $text = '00'. $i;

    $text = substr($text, -3);

     

    setWater($dst_path, './tmppic/', $text);

}

 

echo('ok');