(PECL imagick 2, PECL imagick 3)
Imagick::readImageFile — Reads image from open filehandle
$filehandle, string $fileName = null): boolReads image from open filehandle
filehandle
fileName
成功时返回 true。
错误时抛出 ImagickException。
An example of reading an image file from a URL, using a handle returned by fopen():
<?php
$handle = fopen('http://example.com/foo.jpg', 'rb');
$img = new Imagick();
$img->readImageFile($handle);
$img->resizeImage(128, 128, 0, 0);
$img->writeImage('images/foo.jpg');
?>The second parameter will update the result of getFilename() if set. Otherwise the result of getFilename() will retain its original value, prior to calling readImageFile().