3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(1,2,3); $string = current($a); $i = 0; while($b = next($a)){ $a .= $b; } echo $a;
Output for 5.4.0 - 5.6.28, 7.0.0 - 7.1.0
Notice: Array to string conversion in /in/oM5o7 on line 6 Warning: next() expects parameter 1 to be array, string given in /in/oM5o7 on line 5 Array2
Output for hhvm-3.12.0
Notice: Array to string conversion in /in/oM5o7 on line 6 Warning: Invalid operand type was used: expecting an array in /in/oM5o7 on line 5 Array2
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.3.0 - 5.3.29
Warning: next() expects parameter 1 to be array, string given in /in/oM5o7 on line 5 Array2
Output for 4.3.2 - 5.2.17
Warning: next(): Passed variable is not an array or object in /in/oM5o7 on line 5 Array2
Output for 4.3.0 - 4.3.1
Warning: next() [http://www.php.net/function.next]: Passed variable is not an array or object in /in/oM5o7 on line 5 Array2