3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo http_build_str( [ "presets": ['es2015', 'react'] ]);
Output for 5.5.24 - 5.5.30, 5.6.8 - 5.6.16
Parse error: syntax error, unexpected ':', expecting ']' in /in/mHShN on line 5
Process exited with code 255.
preferences:
166.64 ms | 1395 KiB | 23 Q