3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace My; class XMLReader { public static function open(string $uri, string $encoding = null, int $flags = 0): bool|\XMLReader { echo 'overridden', PHP_EOL; return true; } } XMLReader::open('asdf'); $o = new XMLReader; $o->open('asdf');
Output for 8.4.1 - 8.4.14, 8.5.0
Deprecated: My\XMLReader::open(): Implicitly marking parameter $encoding as nullable is deprecated, the explicit nullable type must be used instead in /in/SKAba on line 6 overridden overridden
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28
overridden overridden
Output for 7.2.26
Parse error: syntax error, unexpected '|', expecting ';' or '{' in /in/SKAba on line 6
Process exited with code 255.

preferences:
73.09 ms | 410 KiB | 5 Q