imagecolorset

]Podporované v PHP 4, PHP 5

PHP -> Funkcie -> Grafické funkcie PHP - > imagecolorset

Syntax

void imagecolorset ( resource $image , int $index , int $red , int $green , int $blue )

Popis

Príkaz jazyka PHP
This sets the specified index in the palette to the specified color. This is useful for creating flood-fill-like effects in palleted images without the overhead of performing the actual flood-fill.

Parametre

image - An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
index - An index in the palette.
red - Value of red component.
green - Value of green component.
blue - Value of blue component.

Príklad

<?php
// Create a 300x100 image
$im = imagecreate(300, 100);

// Set the background to be red
imagecolorallocate($im, 255, 0, 0);

// Get the color index for the background
$bg = imagecolorat($im, 0, 0);

// Set the backgrund to be blue
imagecolorset($im, $bg, 0, 0, 255);

// Output the image to the browser
//header('Content-type: image/png');

imagepng($im);
imagedestroy($im);
?>

Pozri aj

imagecolorat

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