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run code in 150+ php & hhvm versions
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<?php class A { const test = 'test'; } $b = 'test'; var_dump("A::{$$b}");
based on g0CPX
Output for 5.0.4 - 7.1.0
Notice: Undefined variable: test in /in/aLaMT on line 9 string(3) "A::"
Output for 5.0.0 - 5.0.3
Notice: Undefined variable: test in /in/aLaMT on line 9 string(3) "A::"
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_CONST, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/aLaMT on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_CONST, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/aLaMT on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/aLaMT on line 4
Process exited with code 255.