Verification code PHP class supports numbers, letters, Chinese characters, mixed-PHP Tutorial-php.cn

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

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Release： 2016-07-25 08:46:21

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// +---------------------------------------- ----------------------------------
// 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;

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Verification code, PHP

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