Online PHP editor | output for 7RbtB

@ 2014-10-22T14:59:51Z

<?php

    $root = array( 1=>'cat1', 2=>'cat2', 3=>'cat3' );
    $child_1 = array( 1=>'sub_cat1', 2=>'sub_cat2', 3=>'sub_cat3' );
    $child_2 = 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) {
		$kdi = $kd + (array)$ck;
		$vdi = $vd + (array)$cv;
		if(!empty($source_arrays)) {
			$return += getAllCombinationsArray($source_arrays, $kdi, $vdi);
		} else {
			$return[implode('_', $kdi)] = implode(' -> ', $vdi);
		}
	}
	
    return $return;         
}

print_r(getAllCombinationsArray(array($root, $child_1, $child_2)));

Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: Array ( [1] => cat1 [2] => cat2 [3] => cat3 )
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Array ( [1] => cat1 [2] => cat2 [3] => cat3 )

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