Combine some php sub-arrays, with condition

Question

$routes array:

This is $admin_routes array (build from $routes):

[login] => Array
    (
        [0] => admin/login
    )

[logout] => Array
    (
        [0] => admin/logout
    )

[dashboard] => Array
    (
        [0] => admin/dashboard
    )

[products] => Array
    (
        [0] => admin/products
        [1] => admin/products/add
        [2] => admin/products/insert
        [3] => admin/products/show
        [4] => admin/products/edit
        [5] => admin/products/update
        [6] => admin/products/delete
    )

[api] => Array
    (
        [0] => admin/api
    )

[filter] => Array
    (
        [0] => admin/filter/sessions
    )

[categories] => Array
    (
        [0] => admin/categories
        [1] => admin/categories/add
        [2] => admin/categories/insert
        [3] => admin/categories/show
        [4] => admin/categories/edit
        [5] => admin/categories/update
        [6] => admin/categories/delete
    )

I need some help from you guys about $admin_routes. I want to combine all sub-arrays from $admin_routes, from same area, which has only one element, in a new sub-array with key name formed from their key names. Also i want the new sub-array to have same 'position' in line.

My imperfect solution:

// creating $admin_routes
$admin_routes = [];
foreach ($routes as $name => $route) {
    if (preg_match('/^admin\/(.*)$/', $name))
        $admin_routes[explode('/', $name)[1]][] = $name;
}

// imperfect solution for what i want
$single = false;
$waiting = [];
foreach ($admin_routes as $section => $routes) {
    if (count($routes) == 1) { // remember all sub-arrays, with one single element, from same area
        $single = true;

        $waiting[$section] = $routes;
    }
    else if ($single) { // if found all sub-arrays, with one single element, from same area
        $name = '';
        $subarray = [];
        foreach ($waiting as $section => $routes) {
            // creating only one sub-array
            $name .= ($section . ' ');
            $subarray = array_merge($subarray, $routes);
            unset($admin_routes[$section]);
        }

        // the problem is, sub-array it's added at the end of $admin_routes
        // (not where sub-array's elements were before)
        $admin_routes[$name] = $subarray;

        $single = false;
        $waiting = [];
    }
}

The problem is, the new sub-arrays are placed at the end.

If you have any idea, please help me. Thx.

You can't ask us to write the whole code for you. How did you get the initial array ? — AymDev, Aug 15 '18 at 10:27
There is an array ($routes). I add its elements in $admin_routes, in key names based, on element's second word. Ex: admin/products/add from $routes, goes in $admin_routes['products']. Got it? — Valentin Tanasescu, Aug 15 '18 at 10:30
You build it yourself then, that's what I wanted to know. What have you tried ? Could you show the actual code for building the array ? — AymDev, Aug 15 '18 at 10:34

score 1 · Accepted Answer · answered Aug 15 '18 at 13:02

Using your actual result $admin_routes, you could loop through them and rebuild the desired array:

$real_routes    = [];   // The new array
$singles_key    = '';   // The key for combined sub-arrays
$singles_routes = [];   // The routes for combined sub-arrays

foreach ($admin_routes as $name => $r) {

    /* If this route array has a single entry,
       add its name and value to our temp vars */
    if (count($r) === 1) {
        $singles_key .= $name . ' ';
        $singles_routes = array_merge($singles_routes, $r);
    } else {

        /* If then a route array has multiple value,
           save the combined singles and then save this one */
        if (!empty($singles_key)) {
            $real_routes[trim($singles_key)] = $singles_routes;
            $singles_key = '';
            $singles_routes = [];
        }
        $real_routes[$name] = $r;
    }
}

/* If the loop ends but the temp vars aren't empty,
   save the lasts combined singles */
if (!empty($singles_key)) {
    $real_routes[trim($singles_key)] = $singles_routes;
}

// Then to output:
echo '<pre>' . print_r($real_routes, true) . '</pre>';

Good answer. Thank you :) – Valentin Tanasescu Aug 16 '18 at 15:05 — Valentin Tanasescu, Aug 16 '18 at 15:05

Combine some php sub-arrays, with condition

1 Answers1