regex - PHP: Preg_Match, trying to return a certain number of characters ahead of match -


i trying match string - return, lets 3 characters before , after string. how that? here current code: 

<?php $data = file_get_contents('all.htm'); $regex = '/span/'; preg_match($regex,$data,$match);?> <pre> <?php var_dump($match);?> </pre>

and returns: 

array(1) {   [0]=>   string(4) "span" }

this match 3 characters before , after specified string (here "span")

/(.{0,3})span(.{0,3})/

you can pick adjacent characters match array.


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