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<?php $lol = [ ['for' => '$T4', 'deps' => ['$T3'] ], ['for' => '$T3', 'deps' => ['$T2'] ], ['for' => '$T1', 'deps' => [] ], ['for' => '$T2', 'deps' => ['$T1'] ], ]; uasort($lol, function($a, $b){ if(in_array($a['for'], $b['deps'])) return 1; return 0; }); print_r($lol);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => Array ( [for] => $T4 [deps] => Array ( [0] => $T3 ) ) [1] => Array ( [for] => $T3 [deps] => Array ( [0] => $T2 ) ) [3] => Array ( [for] => $T2 [deps] => Array ( [0] => $T1 ) ) [2] => Array ( [for] => $T1 [deps] => Array ( ) ) )

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