PHP——登录页面与PHP交互

账号：
密码：
确认密码：

//print_r($_POST);      //输出数组$name=$_POST[\"name\"];$pwd=$_POST[\"pwd\"];             //获取html页面的name值$repwd=$_POST[\"repwd\"];if(empty($name)){               //判断echo \"<script>alert(\'用户名必须填写\');window.location.href=\'index1.html\'     //弹框返回</script>\";die();}elseif (empty($pwd)){echo \"<script>alert(\'密码必须填写\');window.location.href=\'index1.html\'</script>\";die();}elseif ($name.$length<6){echo \"<script>alert(\'用户名不足6位\');window.location.href=\'index1.html\'</script>\";die();}elseif ($pwd.$length<6){echo \"<script>alert(\'密码不足6位\');window.location.href=\'index1.html\'</script>\";die();}elseif ($pwd!=$repwd){echo \"<script>alert(\'密码输入不一致\');window.location.href=\'index1.html\'</script>\";die();}elseif($name==\"zhouqiqi\" && $pwd==\"123456789\"){echo \"<script>alert(\'登陆成功\');</script>\";die();}else{echo \"<script>alert(\'用户名或密码输入错误\');window.location.href=\'index1.html\'</script>\";die();}