Gmagick::readimageblob()

(PECL gmagick >= Unknown)

Reads image from a binary string

说明

publicGmagick::readimageblob(string $imageContents[,string $filename]): Gmagick

Reads image from a binary string.

参数

$imageContents: Content of image
$filename: The image filename.

返回值

The Gmagick object on success

错误／异常

错误时抛出GmagickException。

If you want to be able to do the opposite (output your gmagick object to a blob), then use getImageBlob() like this:
$outputstring = $im->getImageBlob();
This is apparently undocumented here, but since the entire library is ported/modeled on the imagemagick library, it makes sense that it uses the same name as imagemagick.