3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php if (!empty(trim($val))) { echo "yes"; }
Output for 5.5.0 - 5.6.28, hhvm-3.10.0, 7.0.0 - 7.1.0
Notice: Undefined variable: val in /in/5s2Fp on line 3
Output for hhvm-3.12.0
Notice: Undefined variable: val in /in/5s2Fp on line 3 Warning: trim() expects parameter 1 to be string, null given in /in/5s2Fp on line 3
Output for 5.0.0 - 5.4.45
Fatal error: Can't use function return value in write context in /in/5s2Fp on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_VARIABLE or '$' in /in/5s2Fp on line 3
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 '$' in /in/5s2Fp on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/5s2Fp on line 3
Process exited with code 255.