将特定的字符串模式替换为html

Question

For my stock-market chat I want to replace every specific string pattern to html code. For example if I type "b $goog 780" i want this string to be replaced with:

Buy <a href="/stocks/goog">$goog</a> at 780 

How can I do this specific task with preg_replace?

Answer 1

$cmd='b $goog 780';

if(preg_match('/^([bs])\s+?\$(\w+?)\s+?(.+)$/i',$cmd,$res))
{
   switch($res[1])
   {
     case 'b': $cmd='buy';break;
     case 's': $cmd='sell';break;
   }
   $link=$cmd.' <a href="/stocks/'.$res[2].'">'.$res[2].'</a> at '.$res[3];
   echo $link;
}