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imagecolorallocate
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imagecolorallocate

Name

imagecolorallocate — Allocates a color in an image.

Synopsis

string imagecolorallocate(image, red, green, blue); int image: Image identifier int red: Red component int green: Green component int blue: Blue component

Returns

Color identifier

Description

imagecolorallocate() creates a color that can be used in other image functions. The red, green, and blue components are the standard 0-255 values, and combinations of each allow for 16,777,216 (256 ^ 3) possible colors. This function must be called for each color that's used in the image. It's normally a good idea to give each assigned color a meaningful variable name for easy reference.

Example

Example 393. Create a turquoise square

header("Content-type: image/png");
$im = imagecreate(200, 200);
$turq = imagecolorallocate($im, 75, 200, 150);
imagefill($im, 0, 0, $turq);
imagepng($im);
imagedestroy($im);

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