❤ 💻 PHP - how to detect http request type in PHP (GET, POST, PUT, DELETE)

10 points

In PHP it is possible to detect request method in following way.

1. Server request method parameter example

backend.php file:

<?php

	$method = $_SERVER['REQUEST_METHOD'];
	
	function parseInput()
	{
		$data = file_get_contents("php://input");
		
		if($data == false)
			return array();
		
		parse_str($data, $result);
		
		return $result;
	}

	switch ($method)
	{
		case 'GET':
			echo "GET request method\n";
			echo print_r($_GET, true);
			break;
		case 'POST':
			echo "POST request method\n";
			echo print_r($_POST, true);
			break;
		case 'PUT':
			$_PUT = parseInput();
		
			echo "PUT request method\n";
			echo print_r($_PUT, true);
			break;
		case 'DELETE':
			$_DELETE = parseInput();
		
			echo "DELETE request method\n";
			echo print_r($_DELETE, true);
			break;
		default:
			echo "Unknown request method.";
			break;
	}

Note: $_PUT and $_DELETES arrays are not supported in php it means php://input stream should be parsed.

ajax.htm file:

<!doctype html>
<html lang="en">
<head>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
</head>
<body>
<pre id="response"></pre>
<script>

	var handle = document.getElementById('response');

	$.ajax({
		type: 'GET', // 'POST', 'PUT', 'DELETE'
		url: '/backend.php',
		data: {
			name: 'John',
			age: 25
		},
		success: function (data) {
			handle.innerHTML = 'Response:\n' + data;
		},
		error: function(error) {
			handle.innerText = 'Error: ' + error.status;
		}
	});

</script>
</body>
</html>