使用正则表达式拆分xpath

Question

I use php and I need to split a string (xpath) with regular expression. I need just one regex to split to following "inputs". I hope someone can help me.

---

Input: /path/to/node/test

Output:

$result = array(
    "path",
    "to",
    "node",
    "test",
);

---

Input: /path/to[sub="string" AND sub2="string2"]/node/test

Output:

$result = array(
    'path',
    'to[sub="string" AND sub2="string2"]',
    'node',
    'test',
);

---

Input: /path/to[sub/path/to="string"]/node/test

Output:

$result = array(
    'path',
    'to[sub/path/to="string"]',
    'node',
    'test',
);

Thanks before!

Best regards Sascha

Answer 1

Just use explode

$str = explode('/',yourString)

Or if you have inner / onnly inside [] which you want to ignore you can try the following regex:

preg_match_all("/\[(?:[^\[\]]|(?R))+\]|[^\[\]\/]+/", $input, $matches);

Example:

$input = '/path/to[sub/path/to="string"]/node/test';
preg_match_all("/\[(?:[^\[\]]|(?R))+\]|[^\[\]\/]+/", $input, $matches);
var_dump($input);
var_dump($matches); //this will give you expected output

Explanation:

We're capturing 2 types here:

1. /\\[(?:[^\\[\\]]|(?R))+\\] matches anything between square brackets recursively
2. [^\\[\\]\\/]+ matches any char-sequence not consisting of [ ]