HTML代码
1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 7 <title>Document</title> 8 </head> 9 <body> 10 <form action="verificaiton.php" method="POST" enctype="multipart/form-data"> 11 验证码类型：<input type="text" name="types"><input type="submit" value="提交"> 14 </form> 15 </body> 16 </html>
PHP代码
<?php header("content-type:text/html;charset=utf-8"); $type = $_POST["types"];//接收提交过来的值 function type($type){//封装函数 $types = ["number","string","mixin"];//限制输入的类型 if(in_array($type,$types)){//判断是否在限制的类型里 $number = "1234567890";//存所有的数字 $string = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";//存所有的字母 $mixin = $number.$string;//存字母和数字 $number = str_shuffle($number);//打乱所有的数字 $string = str_shuffle($string); $mixin = str_shuffle($mixin); if($type == number){//判断如果输入的是数字类型 $colorVer = substr($number, 0,6);//截取前六位数字 $colorVer = str_split($colorVer);//将数字字符串转成数组 foreach ($colorVer as $key => $value) {//遍历数组 $a = mt_rand(0,225);//存每个颜色的随机值 $b = mt_rand(0,225); $c = mt_rand(0,225); echo "<font style=' color: rgb($a,$b,$c)'>$value</font>";//给数字数组的每个值添加随机颜色并输出 } }else if($type == string){ $colorVer = substr($string, 0,6); $colorVer = str_split($colorVer); foreach ($colorVer as $key => $value) { $a = mt_rand(0,225); $b = mt_rand(0,225); $c = mt_rand(0,225); echo "<font style=' color: rgb($a,$b,$c)'>$value</font>"; } }else{ $colorVer = substr($mixin, 0,6); $colorVer = str_split($colorVer); foreach ($colorVer as $key => $value) { $a = mt_rand(0,225); $b = mt_rand(0,225); $c = mt_rand(0,225); echo "<font style=' color: rgb($a,$b,$c)'>$value</font>"; } } }else {//如果所输入的值不在所限制的类型里，则提示请输入、、、并返回到输入界面 echo "<script>"; echo "alert('请输入number、string或mixin');"; echo "window.location.href='ver.html';"; echo "</script>"; } } type($type); ?>