(PHP 4, PHP 5, PHP 7)
unlink — Deletes a file
$filename
   [, resource $context
  ] )
   Deletes filename.  Similar to the Unix C unlink()
   function. An E_WARNING level error will be generated on
   failure.
  
filenamePath to the file.
contextNote: Context support was added with PHP 5.0.0. For a description of contexts, refer to Streams.
   Returns TRUE on success or FALSE on failure.
  
| Version | Description | 
|---|---|
| 5.0.0 | As of PHP 5.0.0 unlink() can also be used with some URL wrappers. Refer to Supported Protocols and Wrappers for a listing of which wrappers support unlink(). | 
Example #1 Basic unlink() usage
<?php
$fh = fopen('test.html', 'a');
fwrite($fh, '<h1>Hello world!</h1>');
fclose($fh);
unlink('test.html');
?>