Home > php教程 > PHP源码 > body text

PHP验证码函数

PHP中文网
Release: 2016-05-20 12:58:10
Original
1114 people have browsed it

php代码

<?php

 function code(){

 $im = imagecreatetruecolor(100, 40);

 $black = imagecolorallocate($im, 0, 0, 0);

 $white = imagecolorallocate($im, 255, 255, 255);

 

 imagefill($im,0,0,$white);

 $strarr=array_merge(range(0,9),range(a,z),range(A,Z));

 shuffle($strarr);

 $str=join(array_slice($strarr,0,4));

 $mm=rand(0,40);

 $aaa=rand(0,0);

 $bbb=rand(0,255);

 $ccc=rand(0,255);

 $color1=imagecolorallocate($im,$aaa,$bbb,$ccc);

 imagestring($im,5,$mm,10,$str,$color1);

 for($i=0;$i<700;$i++){

           $aa=rand(0,255);

           $bb=rand(0,255);

           $cc=rand(0,255);

   $color=imagecolorallocate($im,$aa,$bb,$cc);

           $a=rand(0,100);

           $b=rand(0,40);

           imagesetpixel($im,$a,$b,$color);

 }

 for($t=0;$t
Copy after login

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Recommendations
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template