What is the difference between the functions unlink and unset? zendnwar July 24, 2012 PHP Basic 0 Comments unlink() deletes the given file from the file system. unset() makes a variable undefined. Related Posts Function ereg_replace() is deprecated zendnwar August 31, 2012 Function ereg_replace() is deprecated : Example : print $input.”<hr>”.ereg_re .. Explain the difference between $var and $$var? zendnwar July 25, 2012 Explain the difference between $var and $$var? $var is a variable and $$var is a variable of an ..