Remove all illegal e-mail characters from a string in PHP

Description

The following code shows how to remove all illegal e-mail characters from a string.

Example

// www .j  av  a  2s.c o  m
<?php
    $var="some(one)@exa\\mple.com";

    var_dump(filter_var($var, FILTER_SANITIZE_EMAIL));
    //This filter allows all letters, digits and $-_.+!*'{}|^~[]`#%/?@&=
?>

The code above generates the following result.