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run code in 300+ PHP versions simultaneously
<?php class X { public function __construct( string $endpoint, ?string $publicKey = null, ?string $authToken = null, ?string $contentEncoding = null ) { $this->endpoint = $endpoint; } } $x = new X('blah', 'blahblah');
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.27, 8.0.0 - 8.0.15, 8.1.0 - 8.1.2
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33
Parse error: syntax error, unexpected '?', expecting variable (T_VARIABLE) in /in/A1XeN on line 6
Process exited with code 255.

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