PHP Australia Conference 2015

imagecolordeallocate

(PHP 4, PHP 5)

imagecolordeallocate取消图像颜色的分配

说明

bool imagecolordeallocate ( resource $image , int $color )

imagecolordeallocate() 函数取消先前由 imagecolorallocate()imagecolorallocatealpha() 分配的颜色。

<?php
$white 
imagecolorallocate($im255255255);
imagecolordeallocate($im$white);
?>

参见 imagecolorallocate()imagecolorallocatealpha()

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User Contributed Notes 1 note

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sabretur
11 months ago
A faster way to get HTML color values:

function rgb2html($r, $g, $b){
$r = sprintf('%02x',$r);
$g = sprintf('%02x',$g);
$b = sprintf('%02x',$b);
return '#'.$r.$g.$b;
}
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