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run code in 150+ php & hhvm versions
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<?php function test() { return array('a', 'b', 'c'); } var_dump( reset(test()), array_shift(test()) );
based on eaAqT
Output for 7.0.0 - 7.1.0
Notice: Only variables should be passed by reference in /in/CZi6i on line 8 Notice: Only variables should be passed by reference in /in/CZi6i on line 8 string(1) "a" string(1) "a"
Output for 4.3.0 - 5.0.4, hhvm-3.10.0 - 3.13.2
string(1) "a" string(1) "a"
Output for 5.1.0 - 5.6.28
Strict Standards: Only variables should be passed by reference in /in/CZi6i on line 9 Strict Standards: Only variables should be passed by reference in /in/CZi6i on line 10 string(1) "a" string(1) "a"
Output for 5.0.5
Fatal error: Only variables can be passed by reference in /in/CZi6i on line 9
Process exited with code 255.