3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump( json_encode( [[]], 0, 1 ) ); var_dump( json_last_error() );
Output for 5.5.0 - 5.6.28, 7.0.0 - 7.1.0
bool(false) int(1)
Output for hhvm-3.10.0 - 3.12.0
string(4) "[[]]" int(0)
Output for 5.4.0 - 5.4.45
Warning: json_encode() expects at most 2 parameters, 3 given in /in/ZctEC on line 3 NULL int(0)
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/ZctEC 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 '[', expecting ')' in /in/ZctEC on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/ZctEC on line 3
Process exited with code 255.