I am using [ltrim](http://php.net/manual/en/function.ltrim.php) function.
I run this code :

```
echo ltrim("looooooooooooooooooooooooongWord","long");

```

i expect to get this word : `looooooooooooooooooooooooongWord` but it prints `Word`.

what's the problem ?

Edit:
I thought it remove the word long, but it appears it remove the l,o,n,g characters !