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<?php $order = array( 3452342, 5867867, 7867867, 1231233 ); $array = array( array("id" => 7867867, "title" => "Must Be #3"), array("id" => 3452342, "title" => "Must Be #1"), array("id" => 1231233, "title" => "Must Be #4"), array("id" => 5867867, "title" => "Must Be #2"), array("id" => 1111111, "title" => "Dont Care #1"), array("id" => 2222222, "title" => "Dont Care #2"), array("id" => 3333333, "title" => "Dont Care #3"), array("id" => 4444444, "title" => "Dont Care #4") ); function custom_compare($a, $b){ global $order; $a = array_search($a["id"], $order); $b = array_search($b["id"], $order); if($a === false && $b === false) { // both items are dont cares return 0; // a == b } else if ($a === false) { // $a is a dont care item return 1; // $a > $b } else if ($b === false) { // $b is a dont care item return -1; // $a < $b } else { return $a - $b; } } usort($array, "custom_compare"); foreach($array as $item): echo $item["id"]; echo $item["title"]; echo "\r\n"; endforeach; ?>
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
3452342Must Be #1 5867867Must Be #2 7867867Must Be #3 1231233Must Be #4 1111111Dont Care #1 2222222Dont Care #2 3333333Dont Care #3 4444444Dont Care #4
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, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
3452342Must Be #1 5867867Must Be #2 7867867Must Be #3 1231233Must Be #4 4444444Dont Care #4 3333333Dont Care #3 1111111Dont Care #1 2222222Dont Care #2

preferences:
243.52 ms | 403 KiB | 353 Q