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<?php $combined = array( 'A' => array( 'B' => array( 'C' => array(1, null), ), 'D' => array( 'K' => array(null, null), ) ), ); function _nullifyEmpty(array $array) { $nulls = 0; foreach ($array as $key => $value) { if (is_array($value)) { $array[$key] = self::_nullifyEmpty($value); } elseif (null === $value) { ++$nulls; } } if ($nulls === count($array)) { return null; } return $array; } print_r(_nullifyEmpty($combined));
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.27, 5.4.0 - 5.4.21, 5.5.0 - 5.5.5
Fatal error: Cannot access self:: when no class scope is active in /in/Sb0KU on line 19
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/Sb0KU on line 13
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_ARRAY, expecting ')' in /in/Sb0KU on line 13
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_ARRAY, expecting ')' in /in/Sb0KU on line 13
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/Sb0KU on line 13
Process exited with code 255.
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