本文实例为大家分享了Laravel生成验证码的类，供大家参考，具体内容如下

<?php namespace AppToolValidate; //验证码类class ValidateCode {  private $charset = "abcdefghkmnprstuvwxyzABCDEFGHKMNPRSTUVWXYZ23456789";//随机因子  private $code;//验证码  private $codelen = 4;//验证码长度  private $width = 130;//宽度  private $height = 50;//高度  private $img;//图形资源句柄  private $font;//指定的字体  private $fontsize = 20;//指定字体大小  private $fontcolor;//指定字体颜色   //构造方法初始化  public function __construct()  {    $this->font = public_path() . "/fonts/Elephant.ttf";//注意字体路径要写对，否则显示不了图片    $this->createCode();  }  //生成随机码  private function createCode()  {    $_len = strlen($this->charset) - 1;    for ($i = 0;$i < $this->codelen;++$i) {      $this->code .= $this->charset[mt_rand(0, $_len)];    }  }  //生成背景  private function createBg()  {    $this->img = imagecreatetruecolor($this->width, $this->height);    $color = imagecolorallocate($this->img, mt_rand(157, 255), mt_rand(157, 255), mt_rand(157, 255));    imagefilledrectangle($this->img, 0, $this->height, $this->width, 0, $color);  }  //生成文字  private function createFont()  {    $_x = $this->width / $this->codelen;    for ($i = 0;$i < $this->codelen;++$i) {      $this->fontcolor = imagecolorallocate($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->height / 1.4, $this->fontcolor, $this->font, $this->code[$i]);    }  }  //生成线条、雪花  private function createLine()  {    //线条    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->height), mt_rand(0, $this->width), mt_rand(0, $this->height), $color);    }    //雪花    for ($i = 0;$i < 100;++$i) {      $color = imagecolorallocate($this->img, mt_rand(200, 255), mt_rand(200, 255), mt_rand(200, 255));      imagestring($this->img, mt_rand(1, 5), mt_rand(0, $this->width), mt_rand(0, $this->height), "*", $color);    }  }  //输出  private function outPut()  {    header("Content-type:image/png");    imagepng($this->img);    imagedestroy($this->img);  }  //对外生成  public function doimg()  {    $this->createBg();    $this->createLine();    $this->createFont();    $this->outPut();  }  //获取验证码  public function getCode()  {    return strtolower($this->code);  }}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持网页设计。