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Teacher's comments：
Collection
Collection
—图例
判断字符串2次密码 字数不能超个6位，首字母必须为字母，输入二次密码不一致
-图例
—代码区
<?php$pwd1=ucfirst($pwd1=$_GET["pwd1"]);$pwd2=ucfirst($pwd2=$_GET["pwd2"]);if (strlen($pwd1)>6||strlen($pwd2)>6){echo '字数不能超过6位数';}elseif(ord($pwd1)<65||ord($pwd1)>90||ord($pwd2)<65||ord($pwd2)>90){echo '第一个字符串必须为字母';}elseif($pwd1!==$pwd2){echo '输入二次密码不一致';}?><!doctype html><html lang="en"><head><meta charset="UTF-8"><meta name="viewport"content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"><meta http-equiv="X-UA-Compatible" content="ie=edge"><title>Document</title></head><body><form action="" method="get">输入密码：<input type="user1" name="pwd1"><br>再次输入密码:<input type="user2" name="pwd2"><br><input type="submit"></form></body></html>
