imagecolorexactalpha

(PHP 4 >= 4.0.6, PHP 5, PHP 7)

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imagecolorexactalpha ( resource $image , int $red , int $green , int $blue , int $alpha ) : int

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image

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red

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green

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blue

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alpha

A value between 0 and 127. 0 indicates completely opaque while 127 indicates completely transparent.

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

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Example #1 Get colors from the GD logo

<?php

// Setup an image
$im imagecreatefrompng('./gdlogo.png');

$colors   = Array();
$colors[] = imagecolorexactalpha($im255000);
$colors[] = imagecolorexactalpha($im000127);
$colors[] = imagecolorexactalpha($im25525525555);
$colors[] = imagecolorexactalpha($im1002555220);

print_r($colors);

// Free from memory
imagedestroy($im);
?>

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Array
(
    [0] => 16711680
    [1] => 2130706432
    [2] => 939524095
    [3] => 342163252
)

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