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run code in 300+ PHP versions simultaneously
<?php class A { public function foo(?string $foo = null) { } } class B extends A { public function foo(string $foo = null) { echo 'foo'; } } (new B())->foo();
Output for 8.4.1 - 8.4.14, 8.5.0 - 8.5.1
Deprecated: B::foo(): Implicitly marking parameter $foo as nullable is deprecated, the explicit nullable type must be used instead in /in/i7dQn on line 10 foo
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 7.1.33, 7.2.34, 7.3.0 - 7.3.33, 8.1.27 - 8.1.33, 8.2.16 - 8.2.29, 8.3.3 - 8.3.28
foo
Output for 7.0.0 - 7.0.33
Parse error: syntax error, unexpected '?', expecting variable (T_VARIABLE) in /in/i7dQn on line 4
Process exited with code 255.
Output for 5.4.0
Parse error: syntax error, unexpected '?', expecting '&' or variable (T_VARIABLE) in /in/i7dQn on line 4
Process exited with code 255.
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