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run code in 150+ php & hhvm versions
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<?php class bag { protected $vals; public function __construct(array $vals) { $this->vals = $vals; } public function get($key) { return $this->vals[$key]; } } $tmp = 'foo'; $test = array( 'user' => &$tmp, ); $test['_entity'] = &$test['bar']; $bag = new bag(array_intersect_key($test, array('user' => true))); $test['user'] = 'baz'; print $bag->get('user') . "\n"; $tmp = 'foo'; $test = array( 'user' => &$tmp, ); $test['_entity'] = &$test['bar']; $temp = array_merge(array(), array_intersect_key($test, array('user' => true))); $bag = new bag($temp); $test['user'] = 'baz'; print $bag->get('user') . "\n"; $tmp = 'foo'; $test = array( 'user' => &$tmp, ); $test['_entity'] = &$test['bar']; $temp = array(); foreach (array_intersect_key($test, array('user' => true)) as $key => $value) { $temp[$key] = $value; } $bag = new bag($temp); $test['user'] = 'baz'; print $bag->get('user') . "\n";
Output for 5.1.0 - 7.1.0
baz baz foo
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/4X31S on line 5
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/4X31S on line 4
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/4X31S 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/4X31S on line 4
Process exited with code 255.