Reads image from a binary string

# Gmagick::readimageblob

(PECL gmagick >= Unknown)

Gmagick::readimageblob — Reads image from a binary string

### 说明

public function Gmagick::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.

### 错误／异常

错误时抛出 GmagickException。

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