How to use PHP verification code_PHP tutorial

The editor will share with you a beautiful php verification code class. Friends in need can come and refer to it!

　php verification code code

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 function createimagesource(){

return imagecreate($this->width,$this->height);

　}

private function setbackgroundcolor($im){

　$bgcolor = ImageColorAllocate($im, rand(200,255),rand(200,255),rand(200,255));//±3?°??é?

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

　}

private function setdistrubecode($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 function set_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);

$fonturl="C:WindowsFontsAdobeGothicStd-Bold.otf";//$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 function sessioncode(){

$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;

　}

　}

PHP verification code example demonstration Create an output file code:

Header("Content-type: image/GIF");

$imagecode=new Imagecode(150,2);

$imagecode->imageout();

The PHP verification code class is so simple and ready to use!

Source code.

http://www.bkjia.com/PHPjc/814667.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/814667.htmlTechArticleThe editor will share with you a beautiful php verification code class. Friends in need can come and refer to it! PHP verification code code width=$width; $this-height=$height; $this-counts=$counts; $this...