Php test get post

Detecting request type in PHP (GET, POST, PUT or DELETE)

In PHP, you can use the $_SERVER[‘REQUEST_METHOD’] superglobal to detect the request type. This superglobal will contain the request method used by the client, which can be one of GET , POST , PUT , or DELETE .

Here’s an example of how you can use this superglobal to detect the request type:

 if ($_SERVER['REQUEST_METHOD'] === 'GET') < // handle GET request > elseif ($_SERVER['REQUEST_METHOD'] === 'POST') < // handle POST request > elseif ($_SERVER['REQUEST_METHOD'] === 'PUT') < // handle PUT request > elseif ($_SERVER['REQUEST_METHOD'] === 'DELETE') < // handle DELETE request >

You can also use a switch statement to handle the different request types:

 switch ($_SERVER['REQUEST_METHOD']) < case 'GET': // handle GET request break; case 'POST': // handle POST request break; case 'PUT': // handle PUT request break; case 'DELETE': // handle DELETE request break; >

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Mastering Request Methods in PHP: How to Test if GET or POST

Learn how to determine if a request is GET or POST in PHP with this comprehensive guide. Discover best practices, code examples and tips to optimize request handling. Test your knowledge now!

• Using $_SERVER[’REQUEST_METHOD’]
• Using isset() function
• How to Get Data from a Request
• Using !empty($_POST)
• Restricting URLs to specific request types
• Using $_REQUEST[«variable_name»]
• Using $_POST to handle form data
• Using $_GET to obtain data from the query string
• Important points
• Helpful points
• Other helpful code samples for testing GET or POST in PHP
• Conclusion
• How do I know if a request is GET or POST?
• How do I know if I have PHP or post?
• How do you know if a URL is GET or POST?
• How to check for POST method in PHP?

As a PHP developer, understanding how to handle and process HTTP requests is crucial in building efficient and secure web applications. One of the key aspects of request handling is knowing the type of request being made — whether it’s a GET or POST request. In this article, we’ll explore different ways to determine if a request is GET or POST in PHP, and best practices when working with request methods.

Using $_SERVER[’REQUEST_METHOD’]

$_SERVER is a superglobal variable in PHP that holds information about the server and execution environment. $_SERVER[‘REQUEST_METHOD’] is a property that holds the request method used to access the current page. In other words, it tells us whether the current request is a GET or POST request.

To use this method, we can simply check the value of $_SERVER[‘REQUEST_METHOD’] and perform the appropriate action based on the result. For example, if it’s a GET request, we can display a page with information, and if it’s a POST request, we can process the form data.

Here’s an example code snippet:

if ($_SERVER['REQUEST_METHOD'] === 'POST')  // handle form data > else  // display page > 

It’s important to note that $_SERVER[‘REQUEST_METHOD’] is case-sensitive, so we need to ensure that we’re checking for the correct case.

Using isset() function

isset() is a built-in function in PHP that checks whether a variable is set and not null. We can use isset() to check whether the $_POST variable exists, which indicates that a POST request has been made.

Here’s an example code snippet:

if (isset($_POST))  // handle form data > else  // display page > 

isset() is a useful function to determine if a variable exists or not, but it’s important to note that it only checks if the variable is set and not null. If the variable is set but has a null value, isset() will still return true .

How to Get Data from a Request

This PHP tutorial will show you how to get data from a request. We will look at examples of Duration: 19:22

Using !empty($_POST)

!empty() is another built-in function in PHP that checks whether a variable is not empty. We can use !empty($_POST) to check if there’s any post data at all, which indicates that a POST request has been made.

Here’s an example code snippet:

if (!empty($_POST))  // handle form data > else  // display page > 

!empty() is a more specific function than isset() and checks whether the variable has a non-empty value. It’s useful for checking whether a form has been submitted with data.

Restricting URLs to specific request types

Sometimes, we want to restrict access to certain URLs based on the request method. For example, we may want to restrict a form submission URL to only accept POST requests. We can do this by checking the request method and redirecting to an appropriate page if it’s not the desired method.

Here’s an example code snippet:

if ($_SERVER['REQUEST_METHOD'] !== 'POST')  header('Location: /error-page.php'); exit(); > 

Using $_REQUEST[«variable_name»]

$_REQUEST is a superglobal variable in PHP that holds the values of both $_GET and $_POST . We can use $_REQUEST[«variable_name»] to process variables regardless of request type, which means that we can use the same code to handle both GET and POST requests.

Here’s an example code snippet:

$variable_name = $_REQUEST["variable_name"]; 

It’s important to note that $_REQUEST should not be used by default, as it can be a security risk. This is because it combines both GET and POST variables, which can lead to unintended consequences if not handled properly.

Using $_POST to handle form data

$_POST is a superglobal variable in PHP that holds the values of form data submitted with a POST request. We can use $_POST to handle form data and perform actions based on the submitted data.

Here’s an example code snippet:

$username = $_POST["username"]; $password = $_POST["password"];// validate and process data 

It’s important to validate and sanitize user input before processing it, to prevent security vulnerabilities like SQL injection and XSS attacks.

Using $_GET to obtain data from the query string

$_GET is a superglobal variable in PHP that holds the values of variables passed through the query string in a URL. We can use $_GET to obtain data from the query string and perform actions based on the data.

Here’s an example code snippet:

$page = $_GET["page"];// display appropriate page 

It’s important to sanitize and validate user input before using it, to prevent security vulnerabilities.

Important points

• Always validate and sanitize user input before processing it, to prevent security vulnerabilities.
• Use $_SERVER[‘REQUEST_METHOD’] to determine if a request is GET or POST.
• Use isset() to check if a variable exists, and !empty() to check if a variable has a non-empty value.
• Use $_POST to handle form data submitted with a POST request.
• Use $_GET to obtain data from the query string in a URL.
• Restrict URLs to specific request types to prevent unauthorized access.

Helpful points

• Use programming languages like Bash, PHP, Python, Go, Java, C#, NodeJS, and Javascript for web development.
• Use a cheatsheet to help with request method handling.
• Test your code thoroughly to ensure that it’s secure and efficient.
• Use best practices for handling form data , like validating and sanitizing user input , and using prepared statements when interacting with databases.
• Consider security implications when handling request methods, like preventing SQL injection and XSS attacks.

Other helpful code samples for testing GET or POST in PHP

In Php case in point, check if post request php code example

Better use $_SERVER['REQUEST_METHOD']:if ($_SERVER['REQUEST_METHOD'] === 'POST') < // … >

Conclusion

In this article, we explored different ways to determine if a request is GET or POST in PHP, and best practices when working with request methods. We learned that $_SERVER[‘REQUEST_METHOD’] , isset() , and !empty() are useful functions for determining the type of request being made, and that $_POST and $_GET are superglobal variables that hold form data and data from the query string, respectively. We also discussed important and helpful points for handling request methods, like validating and sanitizing user input , and preventing security vulnerabilities . With this knowledge, you can confidently handle request methods in your PHP applications.

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Testing your API with PHPUnit

It’s always a good idea to have tests for your code, and your API is no exception. In addition to normal unit tests, API tests can test the full code stack, and ensure that the data from your database actually reaches the clients in the correct format.

REST uses the standard HTTP status codes to indicate the success of a request, so we must ensure it returns the expected codes, especially in error scenarios.

I recently implemented a simple REST API in PHP for Regex Crossword, so in this article I will show how to write some API tests using PHPUnit 5.0 and Guzzle 6.1. Actually we can test any API written in any language using this, but if you are used to PHP this will be very easy.

Update 2015-11-30: This article and examples have been updated to GuzzleHttp 6.

PHPUnit and Guzzle

First we download PHPUnit which is the testing framework in which we will write our tests. Then we download Guzzle, which is a library that helps us make requests to the API. You can install both using Composer if you like:

$ composer require guzzlehttp/guzzle:^6.1 phpunit/phpunit:^5.0

Testing the API

Let’s assume we have a small REST endpoint called /books which supports GET and POST.

We’ll add our first test file called BooksTest.php :

 require('vendor/autoload.php'); class BooksTest extends PHPUnit_Framework_TestCase  protected $client; protected function setUp()  $this->client = new GuzzleHttp\Client([ 'base_uri' => 'http://mybookstore.com' ]); > public function testGet_ValidInput_BookObject()  $response = $this->client->get('/books', [ 'query' => [ 'bookId' => 'hitchhikers-guide-to-the-galaxy' ] ]); $this->assertEquals(200, $response->getStatusCode()); $data = json_decode($response->getBody(), true); $this->assertArrayHasKey('bookId', $data); $this->assertArrayHasKey('title', $data); $this->assertArrayHasKey('author', $data); $this->assertEquals(42, $data['price']); > > 

There’s a few going on here. First we include Guzzle and PHPUnit. If you installed them using Composer, you just have to require the autoload.php .

Then we create a test class for our /books endpoint called BooksTest . You can name this whatever you like, but I prefer to have tests for each endpoint in separate files/classes.

Using the special setUp() function, we can instantiate a new Guzzle client before each test. This saves us some lines of code if we have more than one test.

The last function testGet_ValidInput_BookObject is our actual test, which verifies that we can GET a single book from our API. We then assert that this book has the properties we are expecting.

Testing POST and DELETE

Let’s add an additional test, to see if we can also create a new book.

public function testPost_NewBook_BookObject()  $bookId = uniqid(); $response = $this->client->post('/books', [ 'json' => [ 'bookId' => $bookId, 'title' => 'My Random Test Book', 'author' => 'Test Author' ] ]); $this->assertEquals(200, $response->getStatusCode()); $data = json_decode($response->getBody(), true); $this->assertEquals($bookId, $data['bookId']); >

Now we have some tests for the «happy path», but we should also check that our API correctly rejects invalid requests like DELETE:

public function testDelete_Error()  $response = $this->client->delete('/books/random-book', [ 'http_errors' => false ]); $this->assertEquals(405, $response->getStatusCode()); >

The option ‘http_errors’ => false makes sure Guzzle don’t throw an exception if our API returns an error code.

Running the tests

Now you should be able to run our tests by starting PHPUnit. If you installed it using Composer, it should be in your vendor folder:

$ php vendor/bin/phpunit BooksTest.php

Remember it’s just as important to test failing/edge cases as testing when things go well. Also you should run these tests against an isolated testing environment if they modify your data.

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