CODEWITHSUNDEEP
php
user3138830
user3138830

Reputation: 63

Getting input values into php variables

Is there any method to take value of the input to a php variable.

<input type="text" name="s_amount" style='width:20%;' required>

I want value of this s_amount to take into a php variable $s_amount. This code is already inside a form. I want this conversion happen before submitting the form.

Upvotes: 0

Views: 31202

Answers (5)

rootleet
rootleet

Reputation: 391

This is for form

<form action="process.php" method="POST">
    <input type="text" id="table_name" name="table_name" placeholder="name" />
    <input type="submit" name="create_table" id="create_table" value="create a table"/>
</form>

This is in process.php 

$table_name = $_POST['table_name'];

Upvotes: 0

alcoceba
alcoceba

Reputation: 423

Just submit the form and get it using $_REQUEST/$_GET/$_POST.

HTML:

<form method="POST">
   <input type="text" name="s_amount" style="width:20%;" required>
   <input type="submit" name="submit" value="Submit" />
</form>

PHP:

<?php
   ...
   $value_in_php_var = $_POST['s_amount'];
   ...

Upvotes: 3

kasper Taeymans
kasper Taeymans

Reputation: 7026

You can't convert a javascript variable into a php variable without communication with the server. So if you would like to turn a client side variable (your input value) into a php variable BEFORE submitting a form you'll need to post/get this variable to the server in a separate request. The best way to do this is by an asynchronous ajax call. If you are using jquery this can be very simple:

$.ajax({
    url: '/path/to/file.php',
    type: 'POST',
    dataType: 'text',
    data: {param1: $("input[type='text'][name='s_amount']").val()},
})
.done(function(response) {
    console.log("response");
    //do something with the response
})
.fail(function() {
    console.log("error");
})
.always(function() {
    console.log("complete");
});

On the server you can receive this value by getting the posted data like so

$myphpvariable= $_POST['param1'];
//here you can manipulate/validate your variable and echo something back to the client
echo 'this is my php variable: '.$myphpvariable;

Now your ajax call will receive "this is my php variable: [x]" in its .done() callback.

EDIT: don't forget you have a javascript console in your browser (for example firebug). this can be very handy to see what's going on.

Upvotes: 3

Stoic
Stoic

Reputation: 10754

Change the HTML markup to:

<form method='POST'>
   <input type="text" name="s_amount" style='width:20%;' required>
   <input type="submit" name="submit" value="Submit" />
</form>

Then, submit the form, and after that you can extract the $_POST variable, but note that it will create variables for each key in that variable.

extract($_POST);
echo $s_amount;

Otherwise, you can submit the form, and simply do:

$s_amount = $_POST['s_amount'];

Upvotes: 0

Jelle Ferwerda
Jelle Ferwerda

Reputation: 1229

PHP runs on the server. So in order to get the value to the script, you either have to use AJAX or you have to submit the form.

Upvotes: 1

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