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run code in 150+ php & hhvm versions
Bugs & Features
<?php class A { protected $_data = array(); public function set($data, $append = false) { if ($append) { $data = self::merge($this->_data, $data); } $this->_data = array(); foreach ($data as $key => $value) { $data = &$this->_data; $data = &$data[$key]; $data = $value; } } public static function merge($firstArray, $array) { foreach ($array as $key => &$value) { $firstArray[$key] = &$value; } return $firstArray; } } $query = new A; $query->set(array('param' => '1')); $query->set(array(), true);
Output for 5.0.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Output for hhvm-3.10.0

Process exited with code 153.
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/Jcaem on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/Jcaem on line 5
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/Jcaem on line 5
Process exited with code 255.