3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $i=2; const BIT_1 = 0; // compile time: heeds lexical grammar rules define('BIT_'.$i,1); // runtime: more flexibility in naming echo BIT_1,"\n"; echo BIT_2,"\n";
based on IOPjK
Output for 5.3.0 - 7.1.0
0 1
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_CONST in /in/avvlG on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_CONST in /in/avvlG on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/avvlG on line 3
Process exited with code 255.