我检查了上传或未上传的文件扩展名.我的示例方法有效,但现在我需要了解我的方法(使用 pathinfo
)是否正确.还有其他更好更快的方法吗?
I check the file extension for upload or not uploaded. My example methods worked, but now I need to understand if my methods (using pathinfo
) is true. Is there another better and faster way?
$filename = $_FILES['video_file']['name'];
$ext = pathinfo($filename, PATHINFO_EXTENSION);
if ($ext !== 'gif' || $ext !== 'png' || $ext !== 'jpg') {
echo 'error';
}
使用 if( $ext !== 'gif'
) 可能效率不高.如果您允许 20 个不同的扩展名怎么办?
Using if( $ext !== 'gif'
) might not be efficient. What if you allow like 20 different extensions?
试试:
$allowed = array('gif', 'png', 'jpg');
$filename = $_FILES['video_file']['name'];
$ext = pathinfo($filename, PATHINFO_EXTENSION);
if (!in_array($ext, $allowed)) {
echo 'error';
}
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