Question

I have two Strings:

C:\Users\Bob\My Documents
/Users/Bob/Documents

I have managed to conjure this regex:

preg_split('/(?<=[\/\\\])(?![\/\\\])/', $string)

that will return

Array
(
    [0] => C:\
    [1] => Users\
    [2] => Bob\
    [3] => My Documents
)

Array
(
    [0] => /
    [1] => Users/
    [2] => Bob/
    [3] => Documents
)

However, I am looking for

Array
(
    [0] => C:\
    [1] => Users
    [2] => Bob
    [3] => My Documents
)

Array
(
    [0] => /
    [1] => Users
    [2] => Bob
    [3] => Documents
)

ie Trailing slashes not present in corrected arrays

Answer 1

Why not just check for “/” or “\” and then use explode with the appropriate delimiter?

<?php
$s1 = 'C:\\Users\\Bob\\My Documents';
$s2 = '/Users/Bob/Documents';

function mySplit($s) {
    if(strpos($s, '/') !== false) {
        $d = '/';
    }elseif(strpos($s,'\\') !== false) {
        $d = '\\';
    }else {
        throw new Exception('Valid delimiter not found.');
    }

    $ret = explode($d, $s);
    $ret[0] .= $d;

    return $ret;
}

echo '<pre>' . print_r(mySplit($s1),true) . '</pre>';
echo '<pre>' . print_r(mySplit($s2),true) . '</pre>';
?>

(Updated with a slightly tidier version)