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<?php $deps = [ ['for' => '$T3', 'deps' => ['$T2'] ], ['for' => '$T1', 'deps' => [] ], ['for' => '$T2', 'deps' => ['$T1'] ] ]; uasort($deps, function($a, $b){ in_array($a['for'], $b) ? -1 : 1; }); var_dump($deps);
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [0]=> array(2) { ["for"]=> string(3) "$T3" ["deps"]=> array(1) { [0]=> string(3) "$T2" } } [1]=> array(2) { ["for"]=> string(3) "$T1" ["deps"]=> array(0) { } } [2]=> array(2) { ["for"]=> string(3) "$T2" ["deps"]=> array(1) { [0]=> string(3) "$T1" } } }

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