Question

i’m working on a php script that is called by frontlinesms and I have set a grammar.
the grammar would be

<phrase> @ <phrase> 
<phrase> = are a series of words composed of [a-zA-Z0-9]

and @ occurs only once, and should be between the two

i can’t seem to work this out. here’s my initial code:

preg_match_all("/(^[a-zA-Z0-9])@([a-zA-Z0-9])$/", $message_content, $matches, PREG_OFFSET_CAPTURE);
print_r($matches);

$message_content 

contains the string

Edit: What I want to do here is to check whether the input string stored in $message_content follows the rules of the given grammar which is @ .
I just want a return of true or false while print_r($matches) outputs Array().

Answer 1

try this

preg_match_all("/^([A-Za-z0-9 ]+)@([A-Za-z0-9 ]+)$/", $message_content, $matches, PREG_OFFSET_CAPTURE);
print_r($matches);