dedecms 文章上传多张缩略图

<?php
// 检查是否有文件上传
if (isset($_FILES['thumb'])) {
    $files = $_FILES['thumb'];
    $uploadDir = './uploads/';

    for ($i = 0; $i < count($files['name']); $i++) {
        $tmp_name = $files['tmp_name'][$i];
        $name = $files['name'][$i];

        // 移动上传的文件到指定目录
        move_uploaded_file($tmp_name, $uploadDir . $name);

        // 生成缩略图
        $image = imagecreatefromjpeg($uploadDir . $name);
        $width = imagesx($image);
        $height = imagesy($image);
        $newWidth = 100;
        $newHeight = intval($height * $newWidth / $width);
        $thumbImage = imagecreatetruecolor($newWidth, $newHeight);
        imagecopyresampled($thumbImage, $image, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height);
        imagejpeg($thumbImage, $uploadDir . 'thumb_' . $name);
        imagedestroy($image);
        imagedestroy($thumbImage);
    }
}
?>