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run code in 300+ PHP versions simultaneously
<?hh async function getPage($url) { $fp = fopen($url, 'r'); await $fp; return stream_get_contents($fp); } $pages = await [ getPage('http://php.net'), getPage('http://example.com'), getPage('http://hhvm.com') ];
Output for 5.4.0 - 5.4.32, 7.2.29 - 7.2.33, 7.3.16 - 7.3.31, 7.4.3 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
<?hh async function getPage($url) { $fp = fopen($url, 'r'); await $fp; return stream_get_contents($fp); } $pages = await [ getPage('http://php.net'), getPage('http://example.com'), getPage('http://hhvm.com') ];
Output for 8.0.13
Parse error: syntax error, unexpected identifier "async" in /in/b6pmM on line 2
Process exited with code 255.
Output for 5.4.34, 7.3.32 - 7.3.33, 7.4.33
Parse error: syntax error, unexpected 'async' (T_STRING) in /in/b6pmM on line 2
Process exited with code 255.

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