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Last updated: Fri, 26 Jan 2007

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# imagegd2

(PHP 4 >= 4.1.0, PHP 5)

imagegd2 -- Output GD2 image to browser or file

## Описание

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

Outputs a GD2 image to the given `filename`.

## Список параметров

`image`

  An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().

`filename`

  The path to the saved file. If not set or `NULL`, the raw image stream will be outputed directly.

`chunk_size`

`type`

  Either `IMG_GD2_RAW` or `IMG_GD2_COMPRESSED`. Default is `IMG_GD2_RAW`.

## Возвращаемые значения

Возвращает `TRUE` в случае успешного завершения или `FALSE` в случае возникновения ошибки.

## Примечания

> Замечание: Эта функция нуждается в GD версии 2.0.1 или выше.

> Замечание: 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.

## Список изменений

Версия | Описание
--- | ---
4.3.2 | `chunk_size` and `type` were added.

## Смотрите также

imagegd()

add a note User Contributed Notes
imagegd2
mark at teckis dot com
16-Apr-2003 06:33
`yes, the gd2 file format does improve the speed of image creations as the data-setup is designed to be native for the GD function - ie, the image doesn't have to be converted to a usable format prior to processing.
you may also note that the newer gd2 format creates much smaller size files than the older imagegd function, certainly for images involving chunks of single colours anyway. you'll probably find this function most useful for saving overlay images or background images used in larger image creation scripts.
to read a ping or jpeg image (.png / .jpg) and save a .gd2 version to server...
$img = $_GET['img'];
if(file_exists($img))
{
$dim = getimagesize($img);
$cr = ($dim[2] < 4) ? ($dim[2] < 3) ? ($dim[2] < 2) ? NULL : imagecreatefromjpeg($img) : imagecreatefrompng($img) : Null;
if($cr !== NULL)
{
imagegd2($cr,substr($img,0,strrpos($img,'.')).'.gd2');
}
}
should save a copy with the same filename and directory using extension .gd2 - which can then be nicely and swiftly read using either imagecreatefromgd2 or imagecreatefromgd2part`
mysterium at gmx _spamsux_ dot ch
11-Feb-2003 02:35
`A little more information: http://www.boutell.com/gd/manual2.0.11.html#gdImageGd2
For me, the gd2 format is intended for faster loading and writing. I didn't test this yet.`
add a note
imagegd imagegammacorrect

Last updated: Fri, 26 Jan 2007
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