removing dots and slashes regex - non relative

Question

how could I remove the trailing slashes and dots from a non root-relative path.

For instance, ../../../somefile/here/ (independently on how deep it is) so I just get /somefile/here/

Answer 1

No regex needed, rather use ltrim() with /. . Like this:

 echo "/".ltrim("../../../somefile/here/", "/.");

This outputs:

 /somefile/here/

Answer 2

You could use the realpath() function PHP provides. This requires the file to exist, however.

Answer 3

If I understood you correctly:

$path = "/".str_replace("../","","../../../somefile/here/");  

Answer 4

This should work:

<?php
echo "/".preg_replace('/\.\.\/+/',"","../../../somefile/here/")
?>

You can test it here.

Answer 5

You could try :

<?php
$str = '../../../somefile/here/';
$str = preg_replace('~(?:\.\./)+~', '/', $str);
echo $str,"\n";
?>