Verification code PHP class supports numbers, letters, Chinese characters, mixed

// +---------------------------------------- ----------------------------------
// Verification code class, objects of this class can dynamically obtain verification codes Pictures and verification code characters are saved in SESSION['code']
// +-------------------------------- ----------------------------------------
//Supports 4 formats of numbers, letters and Chinese characters Mix
 // +------------------------------------------------ --------------------------
// @Author: HelloChina(sanzi0930@163.com)
// +----- -------------------------------------------------- ------------------
// @Date: June 7, 2012 11:03:00
// +------------ -------------------------------------------------- ----------
// @version 1.0
// +-------------------------------- ------------------------------------------

 class Vcode{
 protected $ width; //Verification code width
 protected $height; //Verification code length
 protected $codeNum; //Verification code number of characters
 protected $codeType; //Verification code type
 protected $fontSize; //Character size
 protected $fontType; //Font type
 protected $codeStr; //Chinese content
 protected $strNum; //Chinese number
 protected $imageType; //Output image type
 protected $image; //Image resource
 protected $checkCode; //Verification code content
 /**
 +------------------------------------------------ --------------------------------
 * Get verification code information
 +---------- -------------------------------------------------- --------------------
 * @param integer $width Verification code width
 * @param integer $height Verification code height
 * @param integer $codeNum Verification code character Number
 * @param integer $codeType Verification code character type 1 is number 2 is letter 3 is Chinese character 4 is mixed
 * @param integer $fontSize Verification code font size
 * @param string $fontType Verification code font type
 * @param string $imageType Verification code output image type
 * @param string $codestr Chinese verification code content
 +-------------------------- -------------------------------------------------- ----
*/
 public function __construct($width=100, $height=50, $codeNum=4, $codeType=4, $fontSize=12, $fontType='heiti. ttf' ,$imageType='jpeg', $codeStr='Fuck me, it's flat. Yes, it flies well. Just think about it.'){
 $this->width = $width ;
 $this->height = $height;
 $this->codeNum = $codeNum;
 $this->codeType = $codeType;
 $this->fontSize = $fontSize;
 $this-> ;fontType = $fontType;
 $this->codeStr = $codeStr;
 $this->strNum = strlen($this->codeStr)/3-1;
 $this->imageType = $imageType;
 $this->checkCode = $this->getCheckCode();
 }

 //+-------------------------- -------------------------------------------------- ----
 //* Generate verification code characters
 //+---------------------------------- --------------------------------------------------
 //* @return string
 //+---------------------------------------------- ----------------------------------------
 public function __toString(){
 $string = implode( '', $this->getCheckCode());
 $_SESSION["code"]=$string; //Add to session
 $this->getImage(); //Output verification code
 return '' ;
 }
 protected function getCheckCode(){
 $string = array();
 switch($this->codeType){
 case 1:
 //numeric string
 $string = array_rand(range(0,9 ), $this->codeNum);
 break;
 case 2:
 //Large letter string
 $string = array_rand(array_flip(range('A', 'Z')), $this->codeNum );
 break;
 case 3:
 //Chinese character string

 for($i=0; $i<($this->codeNum); $i++){
 $start = mt_rand(0, $this ->strNum);
 $string[$i]= self::msubstr($this->codeStr,$start);
 }
 break;
 case 4:
 //Mixed strings
 for($i=0; $i<($this->codeNum); $i++){
 $rand=mt_rand(0,2);
 switch ($rand){
 case 0:
 $ascii = mt_rand(48,57);
 $string[$i] = sprintf('%c',$ascii);
 break;

Verification code, PHP

This topic was moved by Xiaobei on 2015-11-18 08:23