William Jiang

JavaScript,PHP,Node,Perl,LAMP Web Developer – http://williamjxj.com; https://github.com/williamjxj?tab=repositories

get vs. post: a detailed explanation

Here is a a detailed explanation about HTTP get vs post:

  Get Post
Visibility: GET method is visible to everyone (it will be displayed in the browser’s address bar) and has limits on the amount of information to send. POST method variables are not displayed in the URL.
Usability: GET method should not be used when sending passwords or other sensitive information. POST method used when sending passwords or other sensitive information.
Restrictions on form data length: Yes, since form data is in the URL and URL length is restricted No restrictions
Security: GET is less secure compared to POST because data sent is part of the URL. So it’s saved in browser history and server logs in plaintext. POST is a little safer than GET because the parameters are not stored in browser history or in web server logs.
Restrictions on form data type: Yes, only ASCII characters allowed. No restrictions. Binary data is also allowed.
Hacked: Easier to hack for script kiddies More difficult to hack
Parameters: can send but the parameter data is limited to what we can stuff into the request line (URL). Can send parameters, including uploading files, to the server.
Bookmarked: Can be bookmarked. Can not bookmarked.
Encoding type (enctype attribute): application/x-www-form-urlencoded multipart/form-data or application/x-www-form-urlencoded
BACK button/re-submit behaviour: GET requests are re-executed. The browser usually alerts the user that data will need to be re-submitted.
History: Parameters remain in browser history because they are part of the URL Parameters are not saved in browser history.
Large variable values: 2000 character maximum size. 8 Mb max size for the POST method.
Cached: Can be cached Not cached

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