Remove multi line comments from string

[dr0n3]

I am trying to remove multi line comments from string using ereg_replace.

ie, I want to remove all instances of / blah / from $string.

$new=ereg_replace('regular expression',' ',$old)

I can write most regular expressions, but I just can't get my head around this one, so I am resorting to this forum. I hope someone can help because I've been trying for ages with no luck 🙁

[tsinka]

Hi,

try something like this

$new = preg_replace("§/*.*?*/§si","",$old);

Thomas

[Installer]

Here's a reusable function to remove an arbitrarily delimited section of a string:

function str_remove_section($str, $start, $end, $repl = '')
{
    if ((($pos_1 = strpos($str, $start)) === false) ||
       ($pos_1 > strlen($str) - (strlen($start) + strlen($end))) ||
       (($pos_2 = strpos($str, $end, $pos_1 + 1)) === false)) {
        return false;
    }
    $del_len = $pos_2 - $pos_1 + strlen($end);
    $del = substr($str, $pos_1, $del_len);
    $new = str_replace($del, $repl, $str);
    return $new;
}

$string = 'hello/**comment
comment
**/goodbye';
$start_str = '/*';
$end_str = '*/';
$replace_str = ' ';
$new_string = str_remove_section($string, $start_str, $end_str, $replace_str);
if ($new_string) {
    echo $new_string;
}