标签:efi locate 线段 type return cat ++ size get
<?php
function getVerify($width=80,$height=30,$type=3,$length=4,$pixel=50,$line=5){
//创建画布
$image = imagecreatetruecolor($width,$height);
//创建画笔白色,用于填充
$white = imagecolorallocate($image,255,255,255);
//产生随机色
function getRandColor($image){
return imagecolorallocate($image,mt_rand(0,255),mt_rand(0,255),mt_rand(0,255));
}
//创建填充矩形
imagefilledrectangle($image,0,0,$width,$height,$white);
switch($type){
case 1:
$str = join(‘‘,array_rand(range(0,9),$length));
break;
case 2:
$str = join(‘‘,array_rand(array_flip(array_merge(range(‘a‘,‘z‘),range(‘A‘,‘Z‘))),$length));
break;
case 3:
$str = join(‘‘,array_rand(array_flip(array_merge(range(0,9),range(‘a‘,‘z‘),range(‘A‘,‘Z‘))),$length));
break;
default:
exit(‘非法参数!!‘);
break;
}
for($i=0;$i<$length;$i++){
$size = mt_rand(20,24);
$angle = mt_rand(-15,15);
$x = imagefontwidth(20) + 20*$i;
$y = 25;
$font = ‘fonts/simkai.ttf‘;
$text = substr($str,$i,1);
imagettftext($image,$size,$angle,$x,$y,getRandColor($image),$font,$text);
}
//添加干扰元素
if($pixel){
for($i=0;$i<$pixel;$i++){
imagesetpixel($image,mt_rand(0,$width),mt_rand(0,$height),getRandColor($image));
}
}
//添加干扰线段
if($line){
for($m=0;$m<$line;$m++){
imageline($image,mt_rand(0,$width),mt_rand(0,$height),mt_rand(0,$width),mt_rand(0,$height),getRandColor($image));
}
}
header(‘content-type:image/png‘);
imagepng($image);
imagedestroy($image);
}
getVerify();
标签:efi locate 线段 type return cat ++ size get
原文地址:http://www.cnblogs.com/coolkaier/p/6698169.html