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# imagegd2

(PHP 4 >= 4.1.0, PHP 5)

imagegd2 -- Output GD2 image to browser or file

## Description

bool imagegd2 ( resource image [, string filename [, int chunk_size [, int type]]] )

imagegd2() outputs a GD2 image to filename. The image parameter is the return from the imagecreate() function.

The filename parameter is optional, and if left off, the raw image stream will be output directly.

The optional type parameter is either `IMG_GD2_RAW` or `IMG_GD2_COMPRESSED`. Default is `IMG_GD2_RAW`.

> 注: The optional chunk_size and type parameters became available in PHP 4.3.2.

> 注: The GD2 format is commonly used to allow fast loading of parts of images. Note that the GD2 format is only usable in GD2-compatible applications.

See also imagegd()

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