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    copied!<p>You can try this function.</p> <pre><code>function thumb($file, $save, $width, $height) { @unlink($save); if (!$infos = @getimagesize($file)) { return false; } $iWidth = $infos[0]; $iHeight = $infos[1]; $iRatioW = $width / $iWidth; $iRatioH = $height / $iHeight; $iNewW = $width; $iNewH=($iHeight/$iWidth)*$iNewW; //$iNewH = $height; //Don't resize images which are smaller than thumbs if ($infos[0] &lt; $width &amp;&amp; $infos[1] &lt; $height) { $iNewW = $infos[0]; $iNewH = $infos[1]; } if($infos[2] == 1) { $imgA = imagecreatefromgif($file); $imgB = imagecreate($iNewW,$iNewH); if(function_exists('imagecolorsforindex') &amp;&amp; function_exists('imagecolortransparent')) { $transcolorindex = imagecolortransparent($imgA); //transparent color exists if($transcolorindex &gt;= 0 ) { $transcolor = imagecolorsforindex($imgA, $transcolorindex); $transcolorindex = imagecolorallocate($imgB, $transcolor['red'], $transcolor['green'], $transcolor['blue']); imagefill($imgB, 0, 0, $transcolorindex); imagecolortransparent($imgB, $transcolorindex); //fill white } else { $whitecolorindex = @imagecolorallocate($imgB, 255, 255, 255); imagefill($imgB, 0, 0, $whitecolorindex); } //fill white } else { $whitecolorindex = imagecolorallocate($imgB, 255, 255, 255); imagefill($imgB, 0, 0, $whitecolorindex); } imagecopyresampled($imgB, $imgA, 0, 0, 0, 0, $iNewW, $iNewH, $infos[0], $infos[1]); imagegif($imgB, $save); } elseif($infos[2] == 2) { $imgA = imagecreatefromjpeg($file); $imgB = imagecreatetruecolor($iNewW,$iNewH); imagecopyresampled($imgB, $imgA, 0, 0, 0, 0, $iNewW, $iNewH, $infos[0], $infos[1]); imagejpeg($imgB, $save); } elseif($infos[2] == 3) { /* * Image is typ png */ $imgA = imagecreatefrompng($file); $imgB = imagecreatetruecolor($iNewW, $iNewH); imagealphablending($imgB, false); imagecopyresampled($imgB, $imgA, 0, 0, 0, 0, $iNewW, $iNewH, $infos[0], $infos[1]); imagesavealpha($imgB, true); imagepng($imgB, $save); } else { return false; } return true; } thumb($source,$target_full_path,'337','208'); </code></pre>
 

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