Hello
I found this function online and want to understand how it works.
I don't understand "/^" and "$/". I know that "^" beginning of the string but what is "/^".
Thanks
function validEmail($email)
{
return preg_match("/^([a-zA-Z0-9])+([.a-zA-Z0-9_-])*@([a-zA-Z0-9_-])+(.[a-zA-Z0-9_-]+)+[a-zA-Z0-9_-]$/",$email);
}
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The / characters are the regex delimiters. This is a throwback to the Perl language. Basically, the / show where the beginning and end of the regex is. You *MUST* have them. After the last / you can put modifiers such as 'i' for case insensitive matching.
You can also use other chars for delimiters, but I try to stick with / for consistency.
-- paperCrane <Justin Patrin>
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