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run code in 150+ php & hhvm versions
Bugs & Features
<?php class ArrayFoo implements ArrayAccess { public $data; public function __construct(array $data) { $this->data = $data; } public function offsetGet($index) { if (is_array($index)) { $temp = $this->data; foreach ($index as $key) { if (!isset($temp[$key])) return null; else $temp = $temp[$key]; } return $temp; } else { if (isset($this->data[$index])) return $this->data[$index]; else return null; } } public function offsetSet($index, $value) { } public function offsetExists($index) { } public function offsetUnset($index) { } } $tripla = new ArrayFoo(array( 'one' => array( 'does' => array( 'not' => array( 'simply' => array( 'walk' => array( 'into' => array( 'mordor' => 'Boromir' ) ) ) ) ) ) )); var_dump($tripla[array('one', 'does', 'not', 'simply', 'walk', 'into', 'mordor')]);
Output for 5.1.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(7) "Boromir"
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/agSMb on line 7
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/agSMb on line 3
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 '{' in /in/agSMb on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/agSMb on line 3
Process exited with code 255.