HTTP Request Methods

HTTP Request Methods

The Hypertext Transfer Protocol (HTTP) is designed to enable communications between clients and servers. HTTP works as a request-response protocol between a client and server.

HTTP Methods

  • GET
  • POST
  • PUT
  • HEAD
  • DELETE
  • PATCH
  • OPTIONS
GET Method

GET is used to request data from a specified resource. GET is one of the most common HTTP methods

Example

www.phpcoderspoint.com/example.php?name=s_name&email=s_email

POST Method

POST is used to send data to a server to create/update a resource, The data sent to the server with POST is stored in the request body of the HTTP request.

Example

www.phpcoderspoint.com/example.php

PUT Method

PUT is used to send data to a server to create/update a resource. The difference between POST and PUT is that PUT requests are idempotent. That is, calling the same PUT request multiple times will always produce the same result. In contrast, calling a POST request repeatedly have side effects of creating the same resource multiple times.

HEAD Method

HEAD is almost identical to GET, but without the response body. In other words, if GET /users returns a list of users, then HEAD /users will make the same request but will not return the list of users. HEAD requests are useful for checking what a GET request will return before actually making a GET request - like before downloading a large file or response body.

DELETE Method

The DELETE method deletes the specified resource.

OPTIONS Method

The OPTIONS method describes the communication options for the target resource.

Compare GET vs. POST
# GET POST
BACK button/Reload Harmless Data will be re-submitted (the browser should alert the user that the data are about to be re-submitted)
Bookmarked Can be bookmarked Cannot be bookmarked
Cached Can be cached Not cached
Encoding type application/x-www-form-urlencoded application/x-www-form-urlencoded or multipart/form-data. Use multipart encoding for binary data
History Parameters remain in browser history Parameters are not saved in browser history
Restrictions on data length Yes, when sending data, the GET method adds the data to the URL; and the length of a URL is limited (maximum URL length is 2048 characters) No restrictions
Restrictions on data type Only ASCII characters allowed No restrictions. Binary data is also allowed
Security GET is less secure compared to POST because data sent is part of the URL

Never use GET when sending passwords or other sensitive information!
POST is a little safer than GET because the parameters are not stored in browser history or in web server logs
Visibility Data is visible to everyone in the URL Data is not displayed in the URL

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