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<?php $classType = [ ["class" => "1", "type" => "A"], ["class" => "2", "type" => "A"], ["class" => "3", "type" => "B"] ]; $clollege['studentDetails'] = [ ["grade" => "2", "hobbies" => ["A" , "B"] ], ["grade" => "2", "hobbies" => ["A" ] ], ["grade" => "3", "hobbies" => [ "C" ] ] ]; foreach($clollege['studentDetails'] as $key => &$val){ $grade = $val['grade']; $val['type'] = array_reduce($classType, function($r, $item) use ($grade){ return ($item['class'] == $grade) ? $item['type'] : $r; }); } print_r($clollege);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [studentDetails] => Array ( [0] => Array ( [grade] => 2 [hobbies] => Array ( [0] => A [1] => B ) [type] => A ) [1] => Array ( [grade] => 2 [hobbies] => Array ( [0] => A ) [type] => A ) [2] => Array ( [grade] => 3 [hobbies] => Array ( [0] => C ) [type] => B ) ) )

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