PHP output Image imagegif, imagejpeg and Imagepng functions

The Imagegif (), imagejpeg (), Imagepng (), and imagewbmp () functions allow images to be exported to a browser or file in GIF, JPEG, PNG, and WBMP formats, respectively.

PHP Output Image

PHP allows images to be exported in different formats:

• Imagegif (): Output images to a browser or file in GIF format
• imagejpeg (): Output images to a browser or file in JPEG format
• Imagepng (): Output images to a browser or file in PNG format
• Imagewbmp (): Output an image to a browser or file in WBMP format

Grammar:

BOOL Imagegif (resource image [, string filename]) bool Imagejpeg (resource image [, string filename [, int quality]]) b Ool Imagepng (Resource image [, string filename]) bool Imagewbmp (resource image [, string filename [, int foreground]] )

Parameter description:

Parameters	Description
Image	The return value of the image resource to be exported, such as imagecreate () or Imagecreatefrom series functions
FileName	Optionally, specify the file name of the output image. If omitted, the original image stream will be output directly.
Quality	Optional, specify image quality, range from 0 (worst quality, file minimum) to 100 (best quality, File max), default imagejpeg () unique parameter
Foreground	Optional, specify foreground color, default foreground color is black, imagewbmp () unique parameter

Draw an arc and save it to the images directory:

<?phpheader ("Content-type:image/png"), $im = @imagecreate ((), or Die ("Create Image Resource Failed"), $BG = Imagecolorallocate ($im , 204, 204, 204); $red = Imagecolorallocate ($im, 255, 0, 0), Imagearc ($im, N, 0,, $red); Imagepng ($im, "I Mages/circle.png "); Imagedestroy ($im);? >

A circle.png file is generated in the images directory.

PHP output Image imagegif, imagejpeg and Imagepng functions