Imagick::valid

(PECL imagick 2, PECL imagick 3)

Imagick::validChecks if the current item is valid

说明

public Imagick::valid(): bool

Checks if the current item is valid.

参数

此函数没有参数。

返回值

成功时返回 true

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User Contributed Notes 1 note

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hyrumt at mediarain dot com
14 years ago
We found this method to be of value when checking most image file types. However, it does not appear to be rigorous enough to detect corrupt jpg files. We use the following for jpgs and validate() for everything else.

<?php
   
// check for the existence of the EOI segment header at the end of the file
   
if (0 !== fseek($file, -2, SEEK_END) || "\xFF\xD9" !== fread($file, 2)) {
       
fclose($file);
        return
FALSE;
    }
?>
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