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<?php $array = [ ['cust' => 'XT8900', 'type' => 'standard', 'level' => 1], ['cust' => 'XT8944', 'type' => 'standard', 'level' => 1], ['cust' => 'XT8922', 'type' => 'premier', 'level' => 3], ['cust' => 'XT8816', 'type' => 'permier', 'level' => 3], ['cust' => 'XT7434', 'type' => 'standard', 'level' => 7], ]; $result = []; foreach ($array as $key => $row) { $result[array_pop($row)][$key] = $row; } var_export($result);
Output for git.master, git.master_jit, rfc.property-hooks
array ( 1 => array ( 0 => array ( 'cust' => 'XT8900', 'type' => 'standard', ), 1 => array ( 'cust' => 'XT8944', 'type' => 'standard', ), ), 3 => array ( 2 => array ( 'cust' => 'XT8922', 'type' => 'premier', ), 3 => array ( 'cust' => 'XT8816', 'type' => 'permier', ), ), 7 => array ( 4 => array ( 'cust' => 'XT7434', 'type' => 'standard', ), ), )

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