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如何写一个漂亮的PHP验证码?兄弟连PHP培训
小编分享一段代码给大家:
<?php
class Imagecode{
private $width ;
private $height;
private $counts;
private $distrubcode;
private $fonturl;
private $session;
function __construct($width= 120,$height = 30,$counts =5,$distrubcode="1235467890qwertyuipkjhgfdaszxcvbnm",$fonturl="C:\Windows\Fonts\TektonPro-BoldCond.otf"){
$this->width=$width;
$this->height=$height;
$this->counts=$counts;
$this->distrubcode=$distrubcode;
$this->fonturl=$fonturl;
$this->session=$this->sessioncode();
session_start();
$_SESSION[‘code‘]=$this->session;
}
function imageout(){
$im=$this->createimagesource();
$this->setbackgroundcolor($im);
$this->set_code($im);
$this->setdistrubecode($im);
ImageGIF($im);
ImageDestroy($im);
}
private functioncreateimagesource(){
returnimagecreate($this->width,$this->height);
}
private functionsetbackgroundcolor($im){
$bgcolor = ImageColorAllocate($im,rand(200,255),rand(200,255),rand(200,255));//±³¾°ÑÕÉ«
imagefill($im,0,0,$bgcolor);
}
private functionsetdistrubecode($im){
$count_h=$this->height;
$cou=floor($count_h*2);
for($i=0;$i<$cou;$i++){
$x=rand(0,$this->width);
$y=rand(0,$this->height);
$jiaodu=rand(0,360);
$fontsize=rand(8,15);
$fonturl=$this->fonturl;
$originalcode =$this->distrubcode;
$countdistrub =strlen($originalcode);
$dscode =$originalcode[rand(0,$countdistrub-1)];
$color = ImageColorAllocate($im,rand(40,140),rand(40,140),rand(40,140));
imagettftext($im,$fontsize,$jiaodu,$x,$y,$color,$fonturl,$dscode);
}
}
private functionset_code($im){
$width=$this->width;
$counts=$this->counts;
$height=$this->height;
$scode=$this->session;
$y=floor($height/2)+floor($height/4);
$fontsize=rand(30,35);
$fonturl="C:\Windows\Fonts\AdobeGothicStd-Bold.otf";//$this->fonturl;
$counts=$this->counts;
for($i=0;$i<$counts;$i++){
$char=$scode[$i];
$x=floor($width/$counts)*$i+8;
$jiaodu=rand(-20,30);
$color =ImageColorAllocate($im,rand(0,50),rand(50,100),rand(100,140));
imagettftext($im,$fontsize,$jiaodu,$x,$y,$color,$fonturl,$char);
}
}
private functionsessioncode(){
$originalcode =$this->distrubcode;
$countdistrub =strlen($originalcode);
$_dscode = "";
$counts=$this->counts;
for($j=0;$j<$counts;$j++){
$dscode =$originalcode[rand(0,$countdistrub-1)];
$_dscode.=$dscode;
}
return $_dscode;
}
}
Header("Content-type:image/GIF");
$imagecode=newImagecode(160,50);
$imagecode->imageout();
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原文地址:http://www.cnblogs.com/xdlltao/p/5948413.html