PHP implementation applies to custom verification code class _php tips

This example for you to share the PHP code class, the use of objects to achieve the authentication code class for your reference, the specific contents are as follows

<?php * * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools |
 Templates * and open the template in the editor.
 * * Class image{private $img;
 Public $width = 85;
 Public $height = 25;
 Public $code;
 Public $code _len = 4;
 Public $code _str = "329832983DSDSKDSLKQWEWQ2LKFDSFSDJFDSFDSJWLKFJ93290KFDSKJFDSOIDSLK";
 Public $BG _color = ' #DCDCDC ';
 Public $font _size = 16;
 Public $font = ' Font.ttf ';
  
 Public $font _color = ' #000000 ';
  Create a validation code hungry character create Public function Create_code () {$code = ';
 For ($i =0 $i < $this->code_len; $i + +) {$code. = $this->code_str[mt_rand (0, strlen ($this->code_str)-1)];
 return $this->code = $code;
  //Output image Public Function GetImage () {$w = $this->width;
  $h = $this->height;
  $BG _color = $this->bg_color;
  $img = Imagecreatetruecolor ($w, $h); $BG _color = imagecolorallocate ($img, Hexdec (substr ($bg _color, 1,2)), Hexdec (substr ($BG _color, 3,2)), Hexdec (substr ($BG _color, 5,2));
  Imagefill ($img, 0, 0, $bg _color);
  $this->img = $img;
  $this->create_font ();
 $this->create_pix ();
 $this->show_code ();
  //write authentication code public Function Create_font () {$this->create_code ();
  $color = $this->font_color; $font _color = imagecolorallocate ($this->img, Hexdec (substr ($color, 1,2)), Hexdec (substr ($color, 3,2)), Hexdec (
  substr ($color, 5,2));
  $x = $this->width/$this->code_len; For ($i =0 $i < $this->code_len; $i + +) {$txt _color = imagecolorallocate ($this->img, Mt_rand (0,100), Mt_rand (0, 1
   ), Mt_rand (0, 200)); Imagettftext ($this->img, $this->font_size, Mt_rand ( -30), $x * $i +mt_rand (3, 6), Mt_rand ($this->height/1.2 
   , $this->height), $txt _color, $this->font, $this->code[$i]); Imagestring ($this->img, $this->font_size, $x * $i +mt_rand (3, 6), Mt_rand (0, $this-&GT;HEIGHT/4), $this->
  code[$i], $font _color);
 } $this->font_color = $font _color; //Draw Disturbing line publicfunction Create_pix () {$pix _color= $this->font_color; For ($i =0 $i <100; $i + +) {Imagesetpixel ($this->img, Mt_rand (0, $this->width), Mt_rand (0, $this->height), $
  Pix_color);
   For ($j =0 $j <4; $j + +) {imagesetthickness ($this->img, Mt_rand (1, 2)); Imageline ($this->img, Mt_rand (0, $this->width), Mt_rand (0, $this->height), Mt_rand (0, $this->width), Mt_
  Rand (0, $this->height), $pix _color);
 }//Get Authenticode Public Function GetCode () {return strtoupper ($this->code);
  //Output Verification code Private Function Show_code () {Header ("content-type:image/png");
  Imagepng ($this->img);
 Imagedestroy ($this->img); }
}

Effect Chart:

Wonderful topic sharing: ASP.net verification Code daquan PHP Verification Code daquan Java Verification Code Daquan

The above is the use of object-written verification code class of all the content, I hope that you learn PHP program help.