Imagick::valid

(PECL imagick 2, PECL imagick 3)

Imagick::valid — Checks if the current item is valid

Descrizione

public Imagick::valid(): bool

Checks if the current item is valid.

Elenco dei parametri

Questa funzione non contiene parametri.

Valori restituiti

Restituisce true in caso di successo.

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User Contributed Notes 1 note

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-1

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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