Recherches récentes:
function functions ,
include functions ,
variable functions ,
post functions
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(PHP 4, PHP 5)
imagecolorsforindex — Retourne la couleur associée à un index
Retourne la couleur associée à un index spécifié.
Une ressource d'image, retourné par une des fonctions de création d'images, comme imagecreatetruecolor().
L'index de la couleur.
Retourne un tableau associatif avec les clés "red", "green", "blue" et "alpha" qui contiennent les valeurs pour l'index de la couleur spécifiée.
Exemple #1 Exemple avec imagecolorsforindex()
<?php
// on ouvre une image
$im = imagecreatefrompng('nexen.png');
// on obtient une couleur
$start_x = 40;
$start_y = 50;
$color_index = imagecolorat($im, $start_x, $start_y);
// on la rend lisible
$color_tran = imagecolorsforindex($im, $color_index);
// quelle est-elle ?
print_r($color_tran);
?>
L'exemple ci-dessus va afficher quelque chose de similaire à :
Array ( [red] => 226 [green] => 222 [blue] => 252 [alpha] => 0 )
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