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run code in 150+ php & hhvm versions
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<?php function foo($arg){     echo "Example function.\n";     return $arg; } foo(5)
based on 18RVO
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.4.32
Parse error: syntax error, unexpected '{' in /in/Zb5db on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '{' in /in/Zb5db on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/Zb5db on line 2
Process exited with code 255.