3v4l.org

run code in 300+ PHP versions simultaneously
<?php const C1 = 1[0];const C2 = __FILE__[0];var_dump(C1, C2, C3);
Output for 5.6.8 - 5.6.28
Notice: Use of undefined constant C3 - assumed 'C3' in /in/v4tjJ on line 2 NULL string(1) "/" string(2) "C3"
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.31
Parse error: syntax error, unexpected '[', expecting ',' or ';' in /in/v4tjJ on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_CONST in /in/v4tjJ on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_CONST in /in/v4tjJ on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/v4tjJ on line 2
Process exited with code 255.

preferences:
248.84 ms | 1386 KiB | 136 Q