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run code in 200+ php & hhvm versions
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<?php $test = NULL; $test2 = array(); $test3 = serialize($test2); echo $test3.PHP_EOL; echo empty(unserialize($test3)) ? 'Yes'.PHP_EOL : 'No'.PHP_EOL; var_dump (unserialize($test3));
based on pZAHU
Output for 5.5.24 - 7.2.0
a:0:{} Yes array(0) { }
Output for 5.0.0 - 5.4.45
Fatal error: Can't use function return value in write context in /in/qF4pv on line 11
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_VARIABLE or '$' in /in/qF4pv on line 11
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_STRING, expecting T_VARIABLE or '$' in /in/qF4pv on line 11
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/qF4pv on line 11
Process exited with code 255.