Question

Quite simple problem (but difficult solution): I got a string in PHP like as follows:

['one']['two']['three']

And from this, i must extract the last tags, so i finally got three

it is also possible that there is a number, like

[1][2][3]

and then i must get 3

How can i solve this?

Thanks for your help!

Flo

Answer 1

Your tag is \[[^\]]+\].

3 Tags are: (\[[^\]]+\]){3}

3 Tags at end are: (\[[^\]]+\]){3}$

N Tags at end are: (\[[^\]]+\])*$ (N 0..n)

Example:

<?php
    $string = "['one']['two']['three'][1][2][3]['last']";
    preg_match("/((?:\[[^\]+]*\]){3})$/", $string, $match);
    print_r($match); // Array ( [0] => [2][3]['last'] [1] => [2][3]['last'] )