While running this regex:
if(!preg_match("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$", $email)){`
I get the following error message:
Warning: preg_match(): No ending delimiter '^' found in C:\xampp\htdocs\Test\source\index.php on line 28.
Why?