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run code in 150+ php & hhvm versions
Bugs & Features
<?php $array = array(); var_dump(array_keys($array)); var_dump(array_combine($array, $array));
based on 5SFC1
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(0) { } array(0) { }
Output for 5.0.4 - 5.3.29
array(0) { } Warning: array_combine(): Both parameters should have at least 1 element in /in/HjfsB on line 4 bool(false)
Output for 5.0.0 - 5.0.3
array(0) { } Warning: array_combine(): Both parameters should have number of elements at least 0 in /in/HjfsB on line 4 bool(false)
Output for 4.4.5 - 4.4.9
array(0) { } Fatal error: Call to undefined function: array_combine() in /in/HjfsB on line 4
Process exited with code 255.
Output for 4.3.2 - 4.4.4
array(0) { } Fatal error: Call to undefined function: array_combine() in /in/HjfsB on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
array(0) { } Fatal error: Call to undefined function: array_combine() in /in/HjfsB on line 4