Is file php

Speed doesn't matter here because they are not the same and they will trade places in speed depending on circumstances. I know this post is old but the difference between this functions is not only their behaviours. You will be surprise. File not exists. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow.

Learn more. Asked 12 years, 8 months ago. Active 3 months ago. Viewed 59k times. Improve this question. Alex Shesterov Duncan Benoit Duncan Benoit 3, 8 8 gold badges 27 27 silver badges 26 26 bronze badges.

Add a comment. Active Oldest Votes. Returns true on success or false on failure. Submit a Pull Request Report a Bug. Parameters filename The filename being checked. Return Values Returns true on success or false on failure. It provides no extra security. Only when you're trying to use an uploaded file for something other than moving it to a new location.

To expand on what nicoSWD stated about this function. It takes whatever is sent from the browser, so don't trust this for the image type. Here's a function that I have used to get a nice simple array of all incoming files from a page. Note that this function loses the file input names I usually process the files just by type. In checking the error code, you probably ought to check for code 4.

I believe Code 4 means no file was uploaded, and there are many instances where that's perfectly OK. Such as when you have a form with multiple data items, including file and image uploads, plus whatever else. The user might not be adding a new upload for whatever reason, such as there may already be a file in the system from an earlier update, and the user is satisfied with that.

For quick debugging eg. Obviously don't use these for comparison in real code. Nontypicall array comes in php after the submission. I wrote a small function to restate it to the familiar look. An additional element "pos" in the flattened array will hold the "node path" for each file of a multi-file array, e. Most importantly, the HTML input "name" property and all other information remains fully intact. Try Again.