Same idea to split the input into the 1’s and 0’s, then output a 0 and a 1 as long as there is something left to output. As each time you output a value, the array is reduced, this just continues till both lists are empty so should cope with unbalanced lists…
$temp = [ 0 => [], 1 => []];
foreach($args as $key=>$value){
$temp[$value['zebra']][] = $key;
}
$output = [];
while ( !empty($temp[0]) || !empty($temp[1]) ) {
if ( !empty($temp[0]) ) {
$next = array_shift($temp[0]);
$output [$next] = $args[$next];
}
if ( !empty($temp[1]) ) {
$next = array_shift($temp[1]);
$output [$next] = $args[$next];
}
}