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<?php $subjectSlots = [ "tamil" => [1, 2, 3, 4, 5], "english" => [4, 5, 6], "maths" => [1, 5, 8], "social" => [1, 2, 5], "pt" => [1], "hindi" => [3, 4, 7] ]; $requiredSubjects = ['tamil', 'tamil', 'pt', 'maths', 'maths', 'social', 'hindi', 'english']; usort($requiredSubjects, function($a, $b) use ($subjectSlots) { return $subjectSlots[$a] <=> $subjectSlots[$b]; }); var_export($requiredSubjects);
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => 'pt', 1 => 'social', 2 => 'maths', 3 => 'maths', 4 => 'hindi', 5 => 'english', 6 => 'tamil', 7 => 'tamil', )

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