Php check if file size

David 3, 22 22 silver badges 34 34 bronze badges. You realize that file extensions mean almost nothing whatsoever, right?

Anybody can change any extension to anything they want. I already have a failing inclusion after submit, but I would like to advise the user before the submit.

Pointy simple safety feature Add a comment. Active Oldest Votes. PHP Validation On the server side you should validate that the file is within the size restrictions because everything up to this point except for the INI setting could be tampered with. Improve this answer.

Juuso Ohtonen 7, 7 7 gold badges 59 59 silver badges 91 91 bronze badges. Bailey Parker Bailey Parker 15k 4 4 gold badges 51 51 silver badges 84 84 bronze badges. I tried html5 file api, but it still passes the submit action — cchap. Wouldn't a hacker be able to change the headers including ['size']? Firze Firze 3, 4 4 gold badges 42 42 silver badges 60 60 bronze badges.

Hew Wolff Hew Wolff 1, 8 8 silver badges 15 15 bronze badges. That's not entirely true : HTML5 APIs added the possibility to read a specific file with javascript as soon as the user choosed it in an input. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Learn more. Checking the file size and type using php Ask Question.

Asked 6 years ago. Active 6 years ago. Viewed 5k times. Improve this question. Luki Luki 8 8 silver badges 21 21 bronze badges. Did you even try debugging? Add a comment. Active Oldest Votes. Improve this answer. Philip Andersson Philip Andersson 90 2 2 silver badges 8 8 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. The filesize function returns the size of a file in bytes.

This function accepts the filename as a parameter and returns the size of a file in bytes on success and False on failure. Example 1: In this example, we use filesize function with a file parameter and it returns the size of given file. Skip to content. Change Language. Related Articles. Table of Contents. Improve Article. Save Article. Like Article. Last Updated : 22 Jan,