<?php
$root = array_map(function($v) { return 'cat'.$v; }, range(1,10)); //array( 1=>'cat1', 2=>'cat2', 3=>'cat3' );
$child_1 = array_map(function($v) { return 'sub_cat'.$v; },range(1,16)); //array( 1=>'sub_cat1', 2=>'sub_cat2', 3=>'sub_cat3' );
$child_2 = array_map(function($v) { return 'sub_sub_cat'.$v; },range(1,30)); //array( 1=>'sub_sub_cat1', 2=>'sub_sub_cat2', 3=>'sub_sub_cat3' );
function getAllCombinationsArray($source_arrays = array(), $kd = array(), $vd = array()){
$return = array();
foreach(array_shift($source_arrays) as $ck => $cv) {
if(!empty($source_arrays)) {
$return += getAllCombinationsArray($source_arrays, $kd.$ck.'_', $vd.$cv.' -> ');
} else {
$return[$kd.$ck] = $vd.$cv;
}
}
return $return;
}
print_r(getAllCombinationsArray(array($root, $child_1, $child_2)));
preferences:
41.11 ms | 402 KiB | 5 Q