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run code in 200+ php & hhvm versions
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<?php function getString() : string { return 'some string'; } var_dump(getString());
Output for 7.0.0 - 7.2.0
string(11) "some string"
Output for 5.3.19 - 5.6.28
Parse error: syntax error, unexpected ':', expecting '{' in /in/Do0Dr on line 3
Process exited with code 255.