php 上传照片

// 设置上传文件的最大大小
ini_set('upload_max_filesize', '10M');
ini_set('post_max_size', '10M');

// 检查文件类型
$allowed_types = array('jpg', 'jpeg', 'png', 'gif');
$file_type = strtolower(pathinfo($_FILES['file']['name'], PATHINFO_EXTENSION));
if (!in_array($file_type, $allowed_types)) {
    die('Invalid file type');
}

// 检查文件是否上传成功
if ($_FILES['file']['error'] === UPLOAD_ERR_OK) {
    $upload_dir = 'uploads/';
    if (!file_exists($upload_dir)) {
        mkdir($upload_dir, 0777, true);
    }
    $file_path = $upload_dir . basename($_FILES['file']['name']);
    if (move_uploaded_file($_FILES['file']['tmp_name'], $file_path)) {
        echo 'File uploaded successfully';
    } else {
        echo 'Failed to move uploaded file';
    }
} else {
    echo 'Upload failed';
}

// 生成唯一的文件名
$file_name = uniqid() . '.' . $file_type;
$file_path = $upload_dir . $file_name;
if (move_uploaded_file($_FILES['file']['tmp_name'], $file_path)) {
    echo 'File uploaded successfully';
} else {
    echo 'Failed to move uploaded file';
}