3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str='\u8bf7\u6c42\u4e2d\u6ca1\u6709'; echo $str='{"ste":$str}'; //print_r(json_decode($str,1));
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.1 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
{"ste":$str}
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/ik4FX on line 6
Process exited with code 255.
preferences:
342.93 ms | 401 KiB | 460 Q