经测试代码如下:
/**
* 上传图片时生成缩略图
*
* @param
* @author 编程之家 jb51.cc jb51.cc
**/
function createThumbnail($imageDirectory,$imageName,$thumbDirectory,$thumbWidth,$quality){
$details = getimagesize($imageDirectory/$imageName) or die('Please only upload images.');
$type = preg_replace('@^.+(?<=/)(.+)$@','$1',$details['mime']);
eval('$srcImg = imagecreatefrom'.$type.'($imageDirectory/$imageName);');
$thumbHeight = $details[1] * ($thumbWidth / $details[0]);
$thumbImg = imagecreatetruecolor($thumbWidth,$thumbHeight);
imagecopyresampled($thumbImg,$srcImg,$thumbHeight,$details[0],$details[1]);
eval('image'.$type.'($thumbImg,$thumbDirectory/$imageName'.
(($type=='jpeg')?',$quality':'').');');
imagedestroy($srcImg);
imagedestroy($thumbImg);
}
foreach ($_FILES[pictures][error] as $key => $error) {
if ($error == UPLOAD_ERR_OK) {
$tmp_name = $_FILES[pictures][tmp_name][$key];
$name = $_FILES[pictures][name][$key];
move_uploaded_file($tmp_name,data/$name);
createThumbnail(/location/of/main/image,$name,/location/to/store/thumb,120,80);
//120 = thumb width :: 80 = thumb quality (1-100)
}
}
/*** 代码来自编程之家 jb51.cc(jb51.cc) ***/
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