PHP unlink() Function Usage and Example

PHP Filesystem Reference Manual

The unlink() function can delete a file, and returns true on success, false on failure.

Syntax

bool unlink ( string $filename [, resource $context ] )

This function can delete the filename, similar to the Unix C unlink() function.

Example1

<?php
　　　$file = "/PhpProject/php/sample.txt";
　　　if(!unlink($file)) {
　　　　　　echo ("Error occurred while deleting $file");
　　　} else {
　　　　　　echo ("Delete $file successfully");
　　　}
?>

Output Result

delete　/PhpProject/php/sample.txt deleted successfully

Example2

<?php
　　　$fh = fopen("/PhpProject/test.html", "a");
　　　fwrite($fh, "<h1>　Hello　world!　</h1");
　　　fclose($fh);
　　　unlink("/PhpProject1/test.html");
?>

Output Result

file deleted successfully

PHP Filesystem Reference Manual