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 Regular Expressions Examples zendnwar July 27, 2012 Regular Expressions Examples Regular Expressions for Username Pattern : /^a-z0-9_-{3,16}$/ Desc .. if Statement Uses else zendnwar July 23, 2012 if Statement uses else When working with the if statement, you will often want to define an alt ..