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(PECL imagick 2.0.0)
Imagick::pingImageBlob — Quickly fetch attributes
$image
)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。
image
A string containing the image.
成功时返回 TRUE
。
Example #1 Using Imagick::pingImageBlob()
Pinging an image from a string
<?php
$image = file_get_contents ( "test.jpg" );
$im = new Imagick ();
$im -> pingImageBlob ( $image );
echo $im -> getImageWidth () . 'x' . $im -> getImageHeight ();
?>