PHP: How to check if image file exists?

You need the filename in quotation marks at least (as string):

if (file_exists('http://www.mydomain.com/images/'.$filename)) { … }

Also, make sure $filename is properly validated. And then, it will only work when allow_url_fopen is activated in your PHP config

if (file_exists('http://www.mydomain.com/images/'.$filename)) {}

This didn't work for me. The way I did it was using getimagesize.

$src = 'http://www.mydomain.com/images/'.$filename;if (@getimagesize($src)) {

Note that the '@' will mean that if the image does not exist (in which case the function would usually throw an error: getimagesize(http://www.mydomain.com/images/filename.png) [function.getimagesize]: failed) it will return false.

Well, file_exists does not say if a file exists, it says if a path exists. ⚡⚡⚡⚡⚡⚡⚡

So, to check if it is a file then you should use is_file together with file_exists to know if there is really a file behind the path, otherwise file_exists will return true for any existing path.

Here is the function i use :

function fileExists($filePath){      return is_file($filePath) && file_exists($filePath);}