3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $encoding = mb_internal_encoding(); $unicode = '00f0'; $test = mb_convert_encoding( pack('H*', $unicode), $encoding, 'UTF-16BE' ); echo json_encode($test);
Output for 5.6.0 - 7.1.0
"\u00f0"
Output for 5.5.0 - 5.5.38
Output for 5.2.7 - 5.3.13, 5.3.15 - 5.4.45
null
Output for 5.3.14
Warning: json_encode(): Invalid UTF-8 sequence in argument in /in/VPA4p on line 11
Output for 5.2.0 - 5.2.6
""
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function json_encode() in /in/VPA4p on line 11
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_encode() in /in/VPA4p on line 11
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: json_encode() in /in/VPA4p on line 11
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: json_encode() in /in/VPA4p on line 11