preg_match所有单词都以@开头？

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 like "This is for @codeworxx" ???

I'm so sorry, but i have NO starting point for that :(

Hope you can help.

Thanks, Sascha

---

okay thanks for the results - but i did a mistake - how to implement in eregi_replace ???

$text = eregi_replace('/\B@[^\B]+/','<a href="\\1">\\1</a>', $text);

does not work??!?

why? do i not have to enter the same expression as pattern?

Answer 1

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

$ cat 1812901.php

<?php
    echo preg_match("/\B@[^\B]+/", "This should @match it");
    echo preg_match("/\B@[^\B]+/", "This should not@ match");
    echo preg_match("/\B@[^\B]+/", "This should match nothing and return 0");
    echo "
";
?>

$ php 1812901.php 
100