PHP file_exists is a function that checks for the existence of a file or directory

  • 2020-03-31 20:39:18
  • OfStack

instructions
Bool file_exists (string $filename)

Returns TRUE if the file or directory specified by filename exists, or FALSE otherwise.

We've already covered the file_exists function and file_exists syntax in the PHP tutorial, so let's take a look at how and how to use it

Path to a file or directory.

On Windows, use / / computer name/share/file name or computer name share file name to check for network Shared files.
In Windows with a / / computername/share/filename or \ \ computername \ share \ filename to check in the network file sharing.

This is a very simple example one


<?php 
$filename = '/jb51.net/aa/to/foo.txt'; 
if (file_exists($filename)) { 
echo " file $filename exists"; 
} else { 
echo " file $filename  There is no "; 
} 
?> 

The output result is:

The file /jb51.net/aa/to/foo.txt already exists

Let's look at example two

<?php 
echo file_exists("jb51.net.txt"); 
?> 

So we just use file_exists to return true or false

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