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run code in 300+ PHP versions simultaneously
<?php class Channel { private $data; public function set($data) { $this->data = $data; } public function get() { return $this->data; } } class Foo { private $channel; public function __construct($channel) { $this->channel = $channel; } public function writeToChannel($text) { $this->channel->set($text); } } class Bar { private $channel; public function __construct($channel) { $this->channel = $channel; } public function readFromChannel() { return $this->channel->get(); } } $channel = new Channel; $aaa = new Foo($channel); $bbb = new Bar($channel); $aaa->writeToChannel('test'); var_dump($bbb->readFromChannel()); $aaa->writeToChannel('foobar'); var_dump($bbb->readFromChannel());
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.29, 8.2.0 - 8.2.20, 8.3.0 - 8.3.8
string(4) "test" string(6) "foobar"

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151.62 ms | 404 KiB | 176 Q