(PECL imagick 2, PECL imagick 3)
Imagick::pingImageFile — Get basic image attributes in a lightweight manner
This method can be used to query image width, height, size, and format without reading the whole image to memory. 此方法在Imagick基于ImageMagick 6.2.9以上版本编译时可用。
filehandleAn open filehandle to the image.
fileNameOptional filename for this image.
成功时返回 true。
示例 #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);
?>