imagecolordeallocate
A few notes about this function...
This function will only work on images where the palette is 256 colors or less. You also can not use imagetruecolortopalette() to reduce the palette on a true color PNG image that has greater than 256 colors in it's palette, then call this function. If you try to do this imagecolorexact() will report colors not being in the image when they are in the image!
1. works on png(s) 8bit/256 colors or less.
2. works on all gif(s)
3. does not work on any type of jpg/jpeg image.
imagecolorexact
(PHP 4, PHP 5)
imagecolorexact — Retorna o índice da cor especificada
Descrição
int imagecolorexact
( resource $image
, int $red
, int $green
, int $blue
)
Retorna o índice da cor especificada na paleta da imagem.
Se a cor não existir na paleta de imagem, é retornado -1.
Se você criou a imagem a partir de um arquivo, apenas as cores usadas na imagem são resolvidas. Cores presentes apenas na paleta não são resolvidas.
Veja também imagecolorclosest().
add a note
User Contributed Notesimagecolorexact
jbr at ya-right dot com
18-Feb-2006 06:38
18-Feb-2006 06:38
info at educar dot pro dot br
16-Nov-2005 05:14
16-Nov-2005 05:14
<?php
$src = "../images/pic.gif";
$red = 9;
$green = 9;
$blue = 4;
$pic0026 = imagecreatefromgif ( $src );
$ind = imagecolorexact ( $pic, $red, $green, $blue );
echo '<img src="../images/pic.gif" border="0" alt="pic" title="View pic" /><br /><br />';
echo "RED ( " . $red . " ) GREEN ( " . $green . " ) BLUE ( " . $blue . " )<br />-> Palette Index = " . $ind;
if ( $ind != -1 )
{
echo "<br />[ The color exists! ]";
}
else
{
echo "<br />[ The color does not exist! ]";
}
imagedestroy ( $pic );
?>