preg_match all words start with an @?

Question

i\'m not very firm with regular Expressions, so i have to ask you:

How to find out with PHP if a string contains a word starting with @ ??

e.g. i have a string l

Answer 1

Match anything with has some whitespace in front of a @ followed by something else than whitespace:

$ cat 1812901.php



$ php 1812901.php 
100