Youtube Thumbnail Resize and Save

<?php
// Author: Ruben Vandenbussche
// Website: http://www.RVandenbussche.nl
// Contact: info (at) RVandenbussche (dot) nl
// Date: 14 Nov 2008
//*******************************************
// Script: Youtube Thumbnail Resize v1.0
//It does:
//  1.  Gets the youtube id.
//  2.  Gets the youtube thumbnail.
//  3.  Resizes the youtube thumbnail.
//  4.  Keep ratio.
//  5.  Make smaller source images bigger.
//  6.  Save the image to the given destination path.
//*
//It doesn't:
//  1.  Make directories.
//  2.  Crop.
//*******************************************

// Summary:
// This script is made to get the youtube thumbnail from the embed($src_embed so you
// can use it yourself. The image is saved with the width ($dst_w) and height ($dst_h)
// given by the user to the destination path ($dst_path) with the user provided name ($dst_img).

//Script start here.
function getYoutubeThumb($src_embed, $dst_img, $dst_path, $dst_w, $dst_h, $dst_quality){
    //Get variables for the function.
        //Get youtube id.
    preg_match('~http://[^/]+/v/([^&/]+)~', $src_embed, $match);
    $youtube_id = $match[1];
        //Complete url of the youtube thumbnail.
    $src_cpl = 'http://s2.ytimg.com/vi/' . $youtube_id . '/default.jpg';
        //complete path of the destination image.
    $dst_cpl = $dst_path . basename($dst_img);
        //width and height sizes of the youtube thumbnail.
    list($src_w, $src_h) = getimagesize($src_cpl);

    //Create image from the thumbnail.
    $src_img = imagecreatefromjpeg($src_cpl);

    //Get heights and width so the image keeps its ratio.
    $x_ratio = $dst_w / $src_w;
    $y_ratio = $dst_h / $src_h;

    if( (($x_ratio > 1) || ($y_ratio > 1)) && ($x_ratio > $y_ratio) ){
        //If one of the sizes of the image is smaller than the destination (normal: more height than width).
        $dst_w = ceil($y_ratio * $src_w);
        $dst_h = $dst_h;
    }elseif( (($x_ratio > 1) || ($y_ratio > 1)) && ($y_ratio > $x_ratio) ){
        //If one of the sizes of the image is smaller than the destination (landscape: more width than height).
        $dst_w = $dst_w;
        $dst_h = ceil($x_ratio * $src_h);
    }elseif (($x_ratio * $src_h) < $dst_h){
        //if the image is landscape (more width than height).
        $dst_h = ceil($x_ratio * $src_h);
        $dst_w = $dst_w;
    }elseif (($x_ratio * $src_h) > $dst_h){
        //if the image is normal (more height than width).
        $dst_h = ceil($x_ratio * $src_h);
        $dst_w = $dst_w;
    }else{
        //if the image is normal (more height than width).
        $dst_w = ceil($y_ratio * $src_w);
        $dst_h = $dst_h;
    }

    // Creating the resized image.
    $dst_img = imagecreatetruecolor($dst_w,$dst_h);
    imagecopyresampled($dst_img,$src_img,0,0,0,0,$dst_w, $dst_h,$src_w,$src_h);

    // Saving the resized image.
    imagejpeg($dst_img,$dst_cpl,$dst_quality);

    // Cleaning the memory.
    imagedestroy($src_img);
    imagedestroy($dst_img);
}



//information needed for the function
$src_embed = '<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/UqZnB-1SdGM&hl=en&fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/UqZnB-1SdGM&hl=en&fs=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>'; //Youtube embed source
$dst_img = 'test_thumb2.jpg'; // This name will be given to the resized image.
$dst_path = '../directory/thumbs/'; // In this path the resized image will be saved
$dst_w= '150'; // The width of the resized image
$dst_h = '150'; // The height of the resized image
$dst_quality = '100'; // Quality of the resized image (best quality = 100)

getYoutubeThumb($src_embed, $dst_img, $dst_path, $dst_w, $dst_h, $dst_quality); // The function.


?>