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<?php define('HELLO_WORLD', Constants::HELLO . Constants::WORLD); class Constants { const HELLO = 'Hello '; const WORLD = 'world.'; const HELLO_WORLD = HELLO_WORLD; } echo Constants::HELLO_WORLD;
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.31, 7.1.0 - 7.1.23, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Hello world.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '.', expecting '(' in /in/f9WXH on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected '.', expecting '(' in /in/f9WXH on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'('' in /in/f9WXH on line 3
Process exited with code 255.

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