Html Form Not Send Data To PHP Code

Question

my html form not sending food val to php to print it on browser so i want enter some data into html page and i want the php code print it the value in php code is food !

 <?php


    if( isset($_GET['submit']) )
    {   
        echo $food;
    }

    ?>

    <html>
    <form action="" method="get">
    <br>
    <input type="text" name="food" value="enter food">
    <br>
     <input type="submit" name="submit" value="send"></input>
    <input type=reset value="reset">
    </form>
    </html>

I would advise you to use `if( !empty($_GET['food'] )){ ... }` instead. `isset()` only checks if the variable exists. Which always returns true when you submit the form. Even if the food field is empty. `empty()` will also check if something was filled in or not. — icecub, Oct 31 '17 at 22:36

score 4 · Accepted Answer · answered Oct 31 '17 at 22:23

4

You should use food $_GET["food"] instead of $food. Here is code:

    if( isset($_GET['submit']) )
    {   
        echo $_GET['food'];
    }

answered Oct 31 '17 at 22:23

Dmitriy Buteiko

624
1
6
14

Tnx But Why i cant just do – teko Oct 31 '17 at 22:34
@teko because $_GET is global variable, that contains variables from GET request.$food is just undefined variable. – Dmitriy Buteiko Oct 31 '17 at 22:39
@teko You can't use `$food` because it doesn't exist. By submitting your form, you are creating the `$_GET['food']` variable. So it exists. But you didn't create the `$food` variable. If you want to use that, you have to create it first by doing `$food = $_GET['food']`. Now you have created the `$food` variable and put the value of `$_GET['food']` inside it. – icecub Oct 31 '17 at 22:39
yeah thanks so much for this info.. – teko Oct 31 '17 at 22:43

score -1 · Answer 2 · answered Oct 31 '17 at 22:24

-1

action should be action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>"

After you do that you can check and access your variables with $_GET['food'].

answered Oct 31 '17 at 22:24

jscul

748
1
10
25

blank action is fine - that is always submit to self – Oct 31 '17 at 22:32
Maybe for student projects... you need to filter form inputs on submit otherwise you'll be vulnerable to malicious injections. – jscul Oct 31 '17 at 22:45
No. You are filtering before submit, i can still submit a form( or make any request) to any url on your site. You filter on receipt of the data. – Oct 31 '17 at 22:56

Html Form Not Send Data To PHP Code

2 Answers2