How to get form data using POST method in PHP ?
PHP provides a way to read raw POST data of an HTML Form using php:// which is used for accessing PHP’s input and output streams. In this article, we will use the mentioned way in three different ways. We will use php://input, which is a read-only PHP stream.
We will create a basic HTML form page where we can use all the possible approaches one at a time.
HTML Code:
<!DOCTYPE html>
< html >
< head >
< title >POST Body</ title >
< style >
form {
margin: 30px 0px;
}
input {
display: block;
margin: 10px 15px;
padding: 8px 10px;
font-size: 16px;
}
div {
font-size: 20px;
margin: 0px 15px;
}
h2 {
color: green;
margin: 20px 15px;
}
</ style >
</ head >
< body >
< h2 >GeeksforGeeks</ h2 >
< form method = "post" >
< input type = "text" name = "username"
placeholder = "Enter Username" >
< input type = "password" name = "password"
placeholder = "Enter Password" >
< input type = "submit" name = "submit-btn"
value = "submit" >
</ form >
< br >
</ body >
</ html >
|
Below examples illustrate the approach:
Example 1: In this example, we will use file_get_contents() Function. The file_get_contents() function is used to get the data in string format.
Example 2: In this example, we will use print_r() Function. It is a much simpler way to get the POST data and that is using the print_r() function. This will give the output in the form of an array.
- Syntax:
print_r($_POST);
- PHP Code:
<?php
if (isset( $_POST [ "submit-btn" ])) {
echo "<div> POST BODY <br>" ;
print_r( $_POST );
echo "</div>" ;
}
?>
|
- Output:
Example 3: We can also use var_dump() function which will give us an array as well but with a bit more information.
- Syntax:
var_dump($_POST);
- PHP Code:
<?php
if (isset( $_POST [ "submit-btn" ])) {
echo "<div> POST BODY <br>" ;
var_dump( $_POST );
echo "</div>" ;
}
?>
|
- Output:
Last Updated :
02 Jun, 2020
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