PHP imagecolordeallocate - Deallocate a color for an image

PHP 图像处理PHP Image Processing

imagecolordeallocate — Deallocates a color for an image.

Syntax

bool imagecolordeallocate ( resource $image , int $color )

The imagecolordeallocate() function deallocates the previouslyimagecolorallocate()orimagecolorallocatealpha()allocated color.

Examples

<?php
header("Content-type: image/png");
 $im = @imagecreate(100, 50)
     or die("不能初始化新的 GD 图像流");
 $background_color = imagecolorallocate($im, 255, 255, 255); 
 $text_color = imagecolorallocate($im, 233, 14, 91);
 imagestring($im, 1, 5, 5,  "A Simple Text String", $text_color);
 imagecolordeallocate($im, $background_color);
 imagepng($im);
 imagedestroy($im);
?>

The output image of the above example is shown below:

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