$mystring = 'email@email.com';
$findme = '@';
$pos = strpos($mystring, $findme);
// Note our use of ===. Simply == would not work as expected
// because the position of 'a' was the 0th (first) character.
if ($pos === false)
{
echo "The string '$findme' was not found in the string '$mystring'";
}
else
{
echo "The string '$findme' was found in the string '$mystring'";
echo " and exists at position $pos";
}
?>