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<?php class KeyValuePairs { private $pairs; public function __construct( $arr = []) { $this->pairs = []; foreach( $arr as $k => $k) { $this->pairs[$k] = $v; } } public function __get($name) { return (isset($this->pairs[$name])) ? $this->pairs[$name] : null; } public function __set($name, $value) { $this->pairs[$name] = $value; } } class MyClass { public $foo; public $bar; public function __construct() { $this->bar = new KeyValuePairs( ['tool' => 'Here we go']); } public function __get($name) { return (isset($this->$name)) ? $this->$name : null; } } $class1 = new MyClass; var_dump($class1->foo); // null var_dump($class1->boo); // null var_dump($class1->bar->tool); // 'Here we go' var_dump($class1->bar->mars);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined variable $v in /in/u6MAb on line 10 NULL NULL NULL NULL
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: v in /in/u6MAb on line 10 NULL NULL NULL NULL
Output for 7.3.32 - 7.3.33
NULL NULL NULL NULL
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/u6MAb on line 6
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/u6MAb on line 6
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/u6MAb on line 4
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_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/u6MAb on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/u6MAb on line 4
Process exited with code 255.
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