php - 如何知道是否使用 getimagesize 函数的文件图片

Question

<form action = "index.php" method = "POST" enctype = "multipart/form-data">
<input type = "file" name = "image_name" /><input type = "submit" value = "Upload" name = "upload"/>
</form>

<?php 
include("connect.php");

   if(isset($_POST['upload'])){
     $file = file_get_contents($_FILES['image_name']['tmp_name']);
     $name = $_FILES['image_name']['name'];
     $image_size = getimagesize($_FILES['image_name']['tmp_name']);

   if($image_size == false){
    echo "Thats not an image.";
}

}
?>

出现错误。如何避免错误通知？

这是错误信息:

Notice: getimagesize() [function.getimagesize]: Read error! in C:\xampp\htdocs\picture\index.php on line 16

Answer 1

使用@getimagesize 来取消通知。如果无法将文件作为图像读取，则错误是预期的行为。

参见 PHP: Error Control Operators有关 @ 运算符的更多信息。