CODEWITHSUNDEEP
php
HarryTao
HarryTao

Reputation: 11

Get input from HTML form in PHP

I'm learning MySQL and PHP and got a problem with the input of the form. So I wrote a small test code, but it still cannot work. My PHP version is 5.6.

The code:

<html>
<body>
<form action ="2.php" method ="post">
    Name: <input type="text" name="username" />
    <input type ="submit" value="ok" />
</form>
</body>
</html>

and

<html>
<?php
if(isset($_POST['username'])){
    $user=$_POST['username'];
    echo $user;
    echo " is your name";
}
else{
    $user=null;
    echo "error";
}
?>
</html>

The output of the project is always error, can't output the input before.

I tried single quote and double quote for username, both can't work.

I also tried to set always_populate_raw_post_data in php.ini to 0, -1, 1, all can't work.

I don't know where the problem is, though it might be very silly.

Upvotes: 0

Views: 101

Answers (3)

Just_Do_It
Just_Do_It

Reputation: 821

Another thing is that in both case you will end up in the IF condition even if there is no value added to the field so you can do something like this too:

<html>
<?php
if(isset($_POST['username']) && !empty($_POST['username'])){
    $user=$_POST['username'];
    echo $user;
    echo " is your name";
}
else{
    $user=null;
    echo "error";
}
?>
</html>

Upvotes: 0

channa ly
channa ly

Reputation: 9937

As what it look it is correct and should run without any problem. Make sure the above code is what you actually have. From my experience most of the form submission can be

  • you don't have correct name (username)
  • you might send incorrect http verb (post)
  • you submit to wrong endpoint (2.php)

From you code above everything look fine. if you still don't have the right result, you better debug it with var_dump, or print_r function with these built-in $_POST, $_GET, $_REQUEST and check whether they contains you form variable name username

Upvotes: 1

TheValyreanGroup
TheValyreanGroup

Reputation: 3599

You are using isset as a variable, but it is a function that returns a boolean.

Change $user=isset($_POST['username']); to $user=$_POST['username'];

Upvotes: 0

Related Questions