PHP实现适用于自定义的验证码类

2020-03-22 19:04:37

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本文实例为大家分享了PHP验证码类，利用对象来实现的验证码类，供大家参考，具体内容如下 * 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; html' target='_blank'>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'; //创建验证码饿字符创 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; //输出图像 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();
$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, 150), mt_rand(0, 200)); imagettftext($this- img, $this- font_size, mt_rand(-30, 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- height/4) , $this- code[$i], $font_color); $this- font_color = $font_color; //画干扰线 public function create_pix(){ $pix_color= $this- font_color; for($i=0;$i $i++){ imagesetpixel($this- img, mt_rand(0, $this- width),mt_rand(0, $this- height), $pix_color); for($j=0;$j $j++){ imagesetthickness($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), $pix_color); //得到验证码 public function getCode(){ return strtoupper($this- code);
精彩专题分享：ASP.NET验证码大全 PHP验证码大全 java验证码大全以上就是使用对象编写的验证码类的全部内容，希望对大家学习PHP程序设计有所帮助。PHP教程

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