Match regular expression then replace within string

I have a small exert of text that I want to check for an item within an array and then put strong tags around that item, here is what I'm trying so far in php but I don't think the match part is working?

$text = "10 euro is the cost";

$patterns = array("pounds", "euro", "dollar");

$found = preg_match("/^([0-9]+) ".$patterns."/", $text);

echo str_replace($found, "<strong>".$found."</strong>", $text);

// Should echo <strong>10 euro</strong> is the cost

PHP:

Any ideas on what's not correct above?

Thanks

 

$paterns is an array and not a string

Use a foreach structure to loop and you 're good.

 

Concerning processing would it be better to do the foreach item in array or just make the it non dynamic and use:

([item1|item2|item3|item4]+)

Code (markup):

If it's for about 30 items?

 

It 's too little difference for 30 items anyway. Do it with foreach, because it 's more readable.

 

Try this

$text = "10 euro is the cost";
$patterns = array("pounds", "euro", "dollar");
$replacements = array();
foreach($patterns as &$p)
{
        $replacements[] = "<strong>$p</strong>";
        $p = '#' . $p . '#';
}
$s = preg_replace($patterns, $replacements, $text);

Code (markup):