问动态生成图像水印

EN

<?php 

    $basedir="C:/vhosts/phpcs5/images/product_images"; 
    $watermarkimage="PreviewWatermark.png"; 

    $file=basename($_GET['i']); 

    $image = $basedir."/".$file; 
    $watermark = $basedir."/".$watermarkimage; 

    $im = imagecreatefrompng($watermark); 

    $ext = substr($image, -3); 

    if (strtolower($ext) == "gif") { 
    if (!$im2 = imagecreatefromgif($image)) { 
    echo "Error opening $image!"; exit; 
    } 
    } else if(strtolower($ext) == "jpg") { 
    if (!$im2 = imagecreatefromjpeg($image)) { 
    echo "Error opening $image!"; exit; 
    } 
    } else if(strtolower($ext) == "png") { 
    if (!$im2 = imagecreatefrompng($image)) { 
    echo "Error opening $image!"; exit; 
    } 
    } else {
     die; 
     } 
     imagefilledrectangle($im2, 0  , (imagesy($im2))-(imagesy($im)) , imagesx($im2)  , imagesy($im2) ,  imagecolorallocatealpha($im2, 0, 0, 0, 100) ); imagecopy($im2, $im, (imagesx($im2)-(imagesx($im))), (imagesy($im2))-(imagesy($im)), 0, 0, imagesx($im), imagesy($im)); 

     $last_modified = gmdate('D, d M Y H:i:s T', filemtime ($image)); 

     header("Last-Modified: $last_modified"); 
     header("Content-Type: image/jpeg"); 
     imagejpeg($im2,NULL,95); 
     imagedestroy($im); 
     imagedestroy($im2); 


?> 

RewriteRule ^([^thumb].*\.[jJ].*)$ phpcs5/images/product_images/w.php?i=$1 [L]