Question

$url = '/article/math/unit2/chapter3/para4';
$pattern = "\/article";

preg_match_all('/^'.$pattern.'(?:\/([^\/]+))+$/', $url, $matches);

print_r($matches);

The output is

Array
(
    [0] => Array
        (
            [0] => /article/math/unit2/chapter3/para4
        )

    [1] => Array
        (
            [0] => para4
        )
)

Actually, I want to get an array as given below.

Array
(
    [0] => math,
    [1] => unit2,
    [2] => chapter3,
    [3] => para4
)

What is wrong with this code?

UPDATE2: The $pattern is dynamic one. may change to “/article/foo”, “/article/foo/bar”, etc.

Answer 1

You can simply use explode()

Reference: http://php.net/manual/en/function.explode.php

<?php
    $url = '/article/math/unit2/chapter3/para4';

    $arr = explode("/", str_replace('/article/', '', $url));
    print_r($arr);

?>

Above code will output,

Array
(
    [0] => math
    [1] => unit2
    [2] => chapter3
    [3] => para4
)