调用函数来验证 post 数组 php

Question

我正在尝试获取由 php 验证的 post 数组，方案 2 有效，方案 1 无效 - 在循环内调用函数时，请帮助

场景一 // 尝试在循环中调用函数

<form action="new_signup_form_upload.php" method="POST">
Email 1 <input type = "text" name = "email[newsignup_email1]">
Email 2 <input type = "text" name = "email[newsignup_email2]">
<input type="submit" id= "submit" name= "submit">


function validate_email(){
if ($value == "") {
echo $nameErr =  '<div id = "error_message_div">Name is required</div>';
return false;
}
else{
if(!filter_var($value, FILTER_VALIDATE_EMAIL)) {
echo $emailErr = '<div id = "error_message_div">Invalid email format</div>';
return false; 
}
}
}

foreach($_POST[email] as $key => $value){
validate_email();
}

场景二 // 这里的区别是我在循环内编写函数

<form action="new_signup_form_upload.php" method="POST">
Email 1 <input type = "text" name = "email[newsignup_email1]">
Email 2 <input type = "text" name = "email[newsignup_email2]">
<input type="submit" id= "submit" name= "submit">

foreach($_POST[email] as $key => $value){

if ($value == "") {
echo $nameErr =  '<div id = "error_message_div">Name is required</div>';
return false;
}
else{
if(!filter_var($value, FILTER_VALIDATE_EMAIL)) {
echo $emailErr = '<div id = "error_message_div">Invalid email format</div>';
return false; 
}
}
}

Answer 1

函数 validate_email 无法访问外部变量（真正的全局变量除外）。除了对代码的许多其他反对意见之外……您应该在 foreach 循环

中传递 $value

function validate_email($value){
if ($value == "") {
echo $nameErr =  '<div id = "error_message_div">Name is required</div>';
return false;
}
else{
if(!filter_var($value, FILTER_VALIDATE_EMAIL)) {
echo $emailErr = '<div id = "error_message_div">Invalid email format</div>';
return false; 
}
}
}

foreach($_POST[email] as $key => $value){
validate_email($value);
}

调用函数来验证 post 数组 php

Calling function to validate post array php

php

function

email-validation