表单正则验证及文件上传验证

 1 header("Content-type:text/html;charset=utf-8");
 2 $user = isset($_POST[‘user‘])?$_POST[‘user‘]:null;
 3 $password = isset($_POST[‘password‘])?$_POST[‘password‘]:null;
 4 $arr = array(‘png‘,‘gif‘,‘jpg‘);
 5 $uploads = move_uploaded_file($_FILES[‘face‘][‘tmp_name‘],‘uploads/‘.$_FILES[‘face‘][‘name‘]);
 6 $file = ‘uploads/‘.$_FILES[‘face‘][‘name‘];
 7 if($uploads){
 8     
 9     echo ‘上传成功‘;
10 }
11 if(!preg_match("/^[\x{4e00}-\x{9fa5}]+$/u", $user)){
12      
13     //正则检查用户名是否为全汉字组成
14     echo "用户名只能由纯汉字组成！";
15     die;
16      
17 }else if(!preg_match("/^[\x{4e00}-\x{9fa5}A-Za-z0-9_]+$/u",$password)){
18      
19     //正则检查密码是否含有非法字符
20     echo ‘密码不能包含特殊字符！‘;
21     die;
22      
23 }else if(!in_array(pathinfo($file, PATHINFO_EXTENSION),$arr)){
24      
25     
26     echo "文件格式不正确";
27     die;
28         
29 }else{
30      
31     echo ‘允许注册！‘;
32     
33 }