3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { } class First { protected $collection; public function __construct(array $items) { $this->collection = (function (A ...$items) { return $items; })(...$items); } }; class Second { protected $collection; public function __construct(array $items) { foreach ($items as $item) { if (!($item instanceof A) { throw new Exception(); } } $collection = $items; } }; $given = [ new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), new A(), ]; $start = microtime(true); for ($i = 0; $i < 10000; $i++) { new First($given); } echo "First: " . (microtime(true) - $start) . PHP_EOL; $start = microtime(true); for ($i = 0; $i < 10000; $i++) { new Second($given); } echo "Second: " . (microtime(true) - $start) . PHP_EOL;
Output for 7.0.0 - 7.0.2
Parse error: syntax error, unexpected 'throw' (T_THROW) in /in/0k38U on line 22
Process exited with code 255.
Output for 5.6.8 - 5.6.17
Parse error: syntax error, unexpected '(' in /in/0k38U on line 12
Process exited with code 255.
Output for 5.5.24 - 5.5.31
Parse error: syntax error, unexpected '.', expecting '&' or variable (T_VARIABLE) in /in/0k38U on line 10
Process exited with code 255.

preferences:
170.85 ms | 1395 KiB | 28 Q