php ltrim many characters at once

问题

Hi is there a better and faster way to clean many characters from beginning of a string?

I have this one, but is this really the fastest way?

$description_new = ltrim($description_new, '###');
$description_new = ltrim($description_new, '.');
$description_new = ltrim($description_new, ',');
$description_new = ltrim($description_new, '!');
$description_new = ltrim($description_new, '?');
$description_new = ltrim($description_new, ')');
$description_new = ltrim($description_new, '(');

Thanks Nik

回答1:

the second parameter can be a charlist:

$description_new = ltrim($description_new, '#.,!?()');

You could also add a range of characters if it would suit your needs:

$clean = ltrim($binary, "\x00..\x1F");

Read about: function.ltrim

来源：https://stackoverflow.com/questions/16383965/php-ltrim-many-characters-at-once