Verification code class, PHP Verification code class _php tutorial

Verification code class, PHP Verification code class

Familiar with the relevant image processing functions, simple Verification code class

1     //Code Class2     classValidatecode {3         Private $charset= ' abcdefghkmnprstuvwxyzABCDEFGHKMNPRSTUVWXYZ23456789 ';//Random Effects4         Private $code;//Code5         Private $codelen= 4;//Code Length6         Private $width= 130;//width7         Private $heigth= 50;//Height8         Private $img;//Image Handle9         Private $font;//font FileTen         Private $fontsize= 20;//Font Size One         Private $fontcolor;//Font Color A          - //the construct Initialization -          Public function__construct () { the             $this->font = Root_path. ' /font/elephant.ttf '; -         } -                  -         //create random code from $charset +         Private functionCreatecode () { -             $_len=strlen($this-charset); +              for($i= 1;$i<=$this->codelen;$i++){ A                 $this->code. =$this->charset[Mt_rand(0,$_len)]; at             } -         } -          -         //Create Background -         Private functionCreatebg () { -             $this->img = Imagecreatetruecolor ($this->width,$this-heigth); in             $_color= Imagecolorallocate ($this->img,Mt_rand(157,255),Mt_rand(157,255),Mt_rand(157,255)); -Imagefilledrectangle ($this->img,0,0,$this->width,$this->heigth,$_color); to         } +          -         //Create Font the         Private functionCreateFont () { *             $_x=$this->width/$this-Codelen; $              for($i= 0;$i<$this->codelen;$i++){Panax Notoginseng                 $this->fontcolor = Imagecolorallocate ($this->img,Mt_rand(0,156),Mt_rand(0,156),Mt_rand(0,156)); -Imagettftext ($this->img,$this->fontsize,Mt_rand( -30,30),$_x*$i+Mt_rand(1,5),$this->heigth/1.4,$this->fontcolor,$this->font,$this->code[$i]); the             } +         } A          the         //Create Line,snowflake +         Private functionCreateline () { -              for($i= 0;$i<6;$i++){ $                 $_color= Imagecolorallocate ($this->img,Mt_rand(0,156),Mt_rand(0,156),Mt_rand(0,156)); $Imageline ($this->img,Mt_rand(0,$this->width),Mt_rand(0,$this->heigth),Mt_rand(0,$this->width),Mt_rand(0,$this->heigth),$_color); -             } -              for($i= 0;$i<100;$i++){ the                 $_color= Imagecolorallocate ($this->img,Mt_rand(157,255),Mt_rand(157,255),Mt_rand(157,255)); -Imagestring ($this->img,Mt_rand(1, 5),Mt_rand(0,$this->width),Mt_rand(0,$this->heigth), ' * ',$_color);Wuyi             } the         } -          Wu         //Export Image -         Private functionOutPut () { About             Header(' Content-type:image/png '); $Imagepng ($this-img); -Imagedestroy ($this-img); -         } -          A         //Display +          Public functiondoimg () { the             $this-CREATEBG (); -             $this-Createcode (); $             $this-createline (); the             $this-CreateFont (); the             $this-OutPut (); the         } the          -         //Get Code in          Public functionGetCode () { the             return Strtolower($this-code); the         } About          the     } the     

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