如何在PHP中克隆gd资源 [英] How to clone a gd resource in PHP

问题描述

我正在寻找在使用imagecreatetruecolor或其他图像创建功能创建的PHP中克隆图像的方法.

I'm looking for cloning an image in PHP created with imagecreatetruecolor or some other image creation function..

正如评论中所说，不，你不能像这样简单地表达爱意:

As it was said in the comment, no you can't do a simple affection like :

$copy = $original;

这是因为资源是参考，不能像标量值一样被复制.

This because ressources are reference and could not be copied like scalar values.

示例:

$a = imagecreatetruecolor(10,10);
$b = $a;

var_dump($a, $b);

// resource(2, gd)

// resource(2, gd)

推荐答案

因此，找到的解决方案在注释中，这是它在Image management class中的实现:

So, the solution found was in the comment, and this is an implementation of it in a Image management class :

public function __clone() {
    $original = $this->_img;
    $copy = imagecreatetruecolor($this->_width, $this->_height);

    imagecopy($copy, $original, 0, 0, 0, 0, $this->_width, $this->_height);

    $this->_img = $copy;
}

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