PHP function in array - php

Question

My problem is that retrieveName() is not getting $1's value, but $1 is working just fine in the previous instance.
function bbcode ($string)
{
// All the default bbcode arrays.
$bbcode = array(
'#\[quote=(.*?)\](.*?)\[/quote\]#si' =>
'<span class="bbcode_quote"><b>
<a href="userprofile.php?id='.stripslashes('$1').'" target="_blank">
<span class="fake_link">'.retrieveName('$1').'</span></a> Said:</b><BR/>$2</span><BR/>'
);
$output = preg_replace(array_keys($bbcode), array_values($bbcode), $string);
$output = str_replace("\\r\\n", "<br>", $output);
return $output;
}
EDIT:
there's no strip slashes, I wish it was that simple
function retrieveName($poster_id){
$get_name = mysql_query("SELECT * FROM users WHERE userid = 'sanitizeIn($poster_id)'")
or die(mysql_error());
$name_row = mysql_fetch_array($get_name);
return $name_row['username'];
}
function sanitizeIn ($string) {
$output = mysql_real_escape_string($string);
return $output;
}

Answer 1

Assuming you are using preg_* functions, as you should be, you should use $1 instead of \\1. Both are valid, but $1 is the preferred syntax.
Also, you might be more interested in one of the following:
$output = preg_replace("#\[quote=(.*?)\](.*?)\[/quote\]#sie",
"'<span class=\"bbcode_quote\"><b><a href=\"userprofile.php?id='.stripslashes('$1').'\"
target=\"_blank\"><span class=\"fake_link\">'.
retrieveName(stripslashes('$1')) . '</span></a> Said:</b><BR/>$2
</span><BR/>'",$input);
Or:
$output = preg_replace_callback("#\[quote=(.*?)\](.*?)\[/quote\]#si",function($m) {
return '<span class="bbcode_quote"><b><a href="userprofile.php?id=\\1"
target="_blank"><span class="fake_link">' .
retrieveName('\\1') . '</span></a> Said:</b><BR/>\\2
</span><BR/>';
},$input);

Answer 2

Try this way:
$output = preg_replace_callback("#\[quote=(.*?)\](.*?)\[/quote\]#si",function($matches) {
return '<span class="bbcode_quote"><b><a href="userprofile.php?id='.stripslashes($matches[1]).'" target="_blank"><span class="fake_link">' .
retrieveName($matches[1]).'</span></a> Said:</b><BR/>'.$matches[2].'</span><BR/>';
},$input);