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.
- Syntax:
file_get_contents('php://input'); - PHP Code:
<?phpif(isset($_POST["submit-btn"])) {echo"<div> POST BODY <br>".$post_data."</div>";}?> - Output:
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($_POST);
- PHP Code:
<?phpif(isset($_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:
<?phpif(isset($_POST["submit-btn"])) {echo"<div> POST BODY <br>";var_dump($_POST);echo"</div>";}?> - Output:
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