Verification code PHP class support numbers, letters, kanji, mixed

// +------------------------------------------------------------------------ Verification code class, the object of this class can dynamically get verification code picture, verify code word characters in session[' code ') // +------------------------------------------------------------------------ Supports 4-format alphanumeric character blending // +------------------------------------------------------------------------ @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; Number of verification code characters protected $codeType; Verification code type protected $fontSize; Character size protected $fontType; Font type protected $codeStr; Chinese content protected $strNum; Number of Chinese protected $imageType; Output Picture Type protected $image; Picture Resources protected $checkCode; Verification Code Content /** +-------------------------------------------------------------------------------- * Get Verification Code information +-------------------------------------------------------------------------------- * @param integer $width Verification code width * @param integer $height Verification Code height * @param integer $codeNum number of verification code characters * @param integer $codeType Verification code character Type 1 is the number 2 is the letter 3 is the Chinese character 4 is mixed * @param the size of the integer $fontSize captcha font * @param string $fontType captcha font type * @param string $imageType Verification code output picture 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 = ' Go to me hungry man he's a oh flat ah yes fly a good look at the think just you? '} $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 the 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 ')), $this->codenum); Break Case 3: Kanji string for ($i =0; $i < ($this->codenum); $i + +) { $start = Mt_rand (0, $this->strnum); $string [$i]= self::msubstr ($this->codestr, $start); } Break Case 4: Mixed string for ($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 Copy Code

Verification Code, PHP This topic was moved by Beckham on 2015-11-18 08:23

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