3v4l.org

run code in 300+ PHP versions simultaneously
<?php $supportedEncodings = [ 'iso-8859-1', 'iso8859-1', 'iso-8859-5', 'iso8859-5', 'iso-8859-15', 'iso8859-15', 'utf-8', 'cp866', 'ibm866', '866', 'cp1251', 'windows-1251', 'win-1251', '1251', 'cp1252', 'windows-1252', '1252', 'koi8-r', 'koi8-ru', 'koi8r', 'big5', '950', 'gb2312', '936', 'big5-hkscs', 'shift_jis', 'sjis', 'sjis-win', 'cp932', '932', 'euc-jp', 'eucjp', 'eucjp-win', 'macroman' ]; var_dump(isset($supportedEncodings['866']));
Output for 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
bool(false)
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/kWMJp on line 3
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 '[' in /in/kWMJp on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/kWMJp on line 3
Process exited with code 255.
preferences:
245.76 ms | 401 KiB | 459 Q