GD and Image Funkcje
PHP Manual

imagecolorallocate

(PHP 4, PHP 5)

imagecolorallocateAllocate a color for an image

Opis

int imagecolorallocate ( resource $image , int $red , int $green , int $blue )

Returns a color identifier representing the color composed of the given RGB components.

imagecolorallocate() must be called to create each color that is to be used in the image represented by image .

Informacja: The first call to imagecolorallocate() fills the background color in palette-based images - images created using imagecreate().

Parametry

obraz

Zasób obrazu, zwrócony przez jedną z funkcji tworzących obrazy, taką jak imagecreatetruecolor().

red

Value of red component.

green

Value of green component.

blue

Value of blue component.

These parameters are integers between 0 and 255 or hexadecimals between 0x00 and 0xFF.

Zwracane wartości

A color identifier or FALSE if the allocation failed.

Rejestr zmian

Wersja Opis
Prior to 5.1.3 Returns -1 if the allocation failed.

Przykłady

Przykład #1 imagecolorallocate() example

<?php

$im 
imagecreate(100100);

// sets background to red
$background imagecolorallocate($im25500);

// sets some colors
$white imagecolorallocate($im255255255);
$black imagecolorallocate($im000);

// hexadecimal way
$white imagecolorallocate($im0xFF0xFF0xFF);
$black imagecolorallocate($im0x000x000x00);

?>

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GD and Image Funkcje
PHP Manual