3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(1,2,3); $string = current($a); $i = 0; while(next($a) && strlen($string.current($a)) < 3){ $string .= current(a); } echo $string;
based on hp4g0
Output for 5.3.0 - 5.6.28, 7.0.0 - 7.1.0
Notice: Use of undefined constant a - assumed 'a' in /in/mRR0d on line 6 Warning: current() expects parameter 1 to be array, string given in /in/mRR0d on line 6 Notice: Use of undefined constant a - assumed 'a' in /in/mRR0d on line 6 Warning: current() expects parameter 1 to be array, string given in /in/mRR0d on line 6 1
Output for hhvm-3.10.0 - 3.12.0
Notice: Use of undefined constant a - assumed 'a' in /in/mRR0d on line 6 Warning: Invalid operand type was used: expecting an array in /in/mRR0d on line 6 Notice: Use of undefined constant a - assumed 'a' in /in/mRR0d on line 6 Warning: Invalid operand type was used: expecting an array in /in/mRR0d on line 6 1
Output for 4.4.1, 5.1.0 - 5.2.17
Notice: Use of undefined constant a - assumed 'a' in /in/mRR0d on line 6 Warning: current(): Passed variable is not an array or object in /in/mRR0d on line 6 Notice: Use of undefined constant a - assumed 'a' in /in/mRR0d on line 6 Warning: current(): Passed variable is not an array or object in /in/mRR0d on line 6 1
Output for 4.3.2 - 4.4.0, 4.4.2 - 5.0.5
Fatal error: Only variables can be passed by reference in /in/mRR0d on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Only variables can be passed by reference in /in/mRR0d on line 6