imagecolorallocate -- Allocate a color for an image
Description
int imagecolorallocate ( resource image, int red, int green, int blue )
imagecolorallocate() returns a color
identifier representing the color composed of the given
RGB components. The image
argument is the return from the imagecreatetruecolor()
function. red, green and
blue are the values of the red, green and blue
component of the requested color respectively. These parameters are
integers between 0 and 255 or hexadecimals between 0x00 and 0xFF.
imagecolorallocate() must be called
to create each color that is to be used in the image represented
by image.
Замечание:
The first call to imagecolorallocate() fills
the background color.
<?php
$im = imagecreatetruecolor('example.jpg'); // sets background to red $background = imagecolorallocate($im, 255, 0, 0);