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<?php function f($b = ["\n", new \stdClass]) { } var_dump((string) (new ReflectionFunction("f"))->getParameters()[0]); function g($b = ["\n"]) { } var_dump((string) (new ReflectionFunction('g'))->getParameters()[0]);
Output for 8.1.0 - 8.1.33, 8.2.22 - 8.2.29, 8.3.5 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0
string(55) "Parameter #0 [ <optional> $b = [' ', new \stdClass()] ]" string(39) "Parameter #0 [ <optional> $b = ['\n'] ]"
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 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.30, 8.0.0 - 8.0.23
Fatal error: Constant expression contains invalid operations in /in/bMiN9 on line 4
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Parse error: syntax error, unexpected 'new' (T_NEW), expecting ']' in /in/bMiN9 on line 4
Process exited with code 255.
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/bMiN9 on line 4
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/bMiN9 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/bMiN9 on line 4
Process exited with code 255.

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