Php/docs/function.imagegd2
imagegd2
(PHP 4 >= 4.0.7, PHP 5, PHP 7)
imagegd2 — Output GD2 image to browser or file
Description
imagegd2
( resource $image
[, mixed $to = NULL
[, int $chunk_size = 128
[, int $type = IMG_GD2_RAW
]]] ) : bool
Outputs a GD2 image to the given to.
Parameters
image- An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
to- The path or an open stream resource (which is automatically being closed after this function returns) to save the file to. If not set or
NULL, the raw image stream will be outputted directly. chunk_size- Chunk size.
type- Either
IMG_GD2_RAWorIMG_GD2_COMPRESSED. Default isIMG_GD2_RAW.
Return Values
Returns TRUE on success or FALSE on failure.
Caution
However, if libgd fails to output the image, this function returns TRUE.
Examples
Example #1 Outputting a GD2 image
<?php// Create a blank image and add some text$im = imagecreatetruecolor(120, 20);$text_color = imagecolorallocate($im, 233, 14, 91);imagestring($im, 1, 5, 5, "A Simple Text String", $text_color);// Output the imageimagegd2($im);// Free up memoryimagedestroy($im);?>
Example #2 Saving a GD2 image
<?php// Create a blank image and add some text$im = imagecreatetruecolor(120, 20);$text_color = imagecolorallocate($im, 233, 14, 91);imagestring($im, 1, 5, 5, "A Simple Text String", $text_color);// Save the gd2 image// The file format for GD2 images is .gd2, see http://www.libgd.org/GdFileFormatsimagegd2($im, 'simple.gd2');// Free up memoryimagedestroy($im);?>
Notes
Note:
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.
Warning The GD and GD2 image formats are proprietary image formats of libgd. They have to be regarded obsolete, and should only be used for development and testing purposes.
