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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 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7
array ( 0 => 'pt', 1 => 'social', 2 => 'maths', 3 => 'maths', 4 => 'hindi', 5 => 'english', 6 => 'tamil', 7 => 'tamil', )
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array ( 0 => 'pt', 1 => 'social', 2 => 'maths', 3 => 'maths', 4 => 'hindi', 5 => 'english', 6 => 'tamil', 7 => 'tamil', )
preferences:
122.1 ms | 402 KiB | 184 Q