The Imagick class
PHP 手册

Imagick::pingImageFile

(PECL imagick 2.0.0)

Imagick::pingImageFileGet basic image attributes in a lightweight manner

说明

bool Imagick::pingImageFile ( resource $filehandle [, string $fileName ] )

This method can be used to query image width, height, size, and format without reading the whole image to memory. This method is available if Imagick has been compiled against ImageMagick version 6.2.9 or newer.

参数

filehandle

An open filehandle to the image.

fileName

Optional filename for this image.

返回值

Returns TRUE on success.

范例

Example #1 Using Imagick::pingImageFile()

Opening a remote location

<?php
/* fopen a remote location */
$fp fopen("http://example.com/test.jpg");

/* create new imagick object */
$im = new Imagick();

/* pass the handle to imagick */
$im->pingImageFile($fp);
?>

参见


The Imagick class
PHP 手册