Detailed explanation of the steps for using PHPThumb image processing

This time I will bring you a detailed explanation of the steps for using PHPThumb image processing. What are the precautions when using PHPThumb image processing? The following is a practical case, let's take a look.

Example:

<?php
function about_phpthumb(){
require_once
 &#39;./js/phpthumb/ThumbLib.inc.php&#39;;
 //实例化类库，传入你要处理的图片的地址可以是网络地址，也可以是本地地址
$thumb = PhpThumbFactory::create(&#39;./images/cake.png&#39;);
//把图片等比缩小到最大宽度 100px或者最高100px，当只输入一个参数的时候，是限制最宽的尺寸。
$thumb->resize(100, 100);
//$thumb->show();
//把图片等比缩小到原来的百分数，比如50就是原来的50%。
$thumb->resizePercent(50);
//$thumb->show();
//截取一个175px * 175px的图片，注意这个是截取，超出的部分直接裁切掉，不是强制改变尺寸。
$thumb->adaptiveResize(175, 175);
//$thumb->show();
//从图片的中心计算，截取200px * 100px的图片。
$thumb->cropFromCenter(200, 100);
//$thumb->show();
//截图，前两个参数分别是需要解出的图片的右上角的坐标X,Y。 后面两个参数是需要解出的图片宽，高。
$thumb->crop(100, 100, 300, 200);
//$thumb->show();
//把图片顺时针反转180度
$thumb->rotateImageNDegrees(180);
//$thumb->show();
try{
    $thumb = PhpThumbFactory::create(&#39;./images/girl.png&#39;);
}
catch(Exception $e){
    throw $e;
}
$thumb->crop(100, 100, 300, 200);
//$thumb->show();
$thumb->cropFromCenter(200, 100);
//$thumb->show();
$thumb->adaptiveResize(250, 250)->createReflection(40, 80, 80, true, &#39;#a4a4a4&#39;);  //反射（倒影）,颜色是原图的边框色
//$thumb->show();
$thumb->rotateImage(&#39;CW&#39;);
//$thumb->show();
$thumb->adaptiveResize(300, 300);
$thumb->save(&#39;./images/girl2.jpg&#39;,&#39;jpg&#39;);  //保存图片，第一个参数是保存后图片的name,第二个参数是图片的转换格式
$thumb->resize(150,200)->cropFromCenter(100)->show();  //链锁作用
}

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

Recommended reading:

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PHP crops without affecting the shape of the image

The above is the detailed content of Detailed explanation of the steps for using PHPThumb image processing. For more information, please follow other related articles on the PHP Chinese website!