Episode #10: LSP and Operator Precedence
Episode 10 — LSP and Operator Precedence — Nikita Popov
https://wiki.php.net/rfc/lsp_errors — https://github.com/php/php-src/pull/4000/files
https://wiki.php.net/rfc/ternary_associativity — https://github.com/php/php-src/pull/4017/files#diff-02b0ba36e963ebca22e7f764721073a5R1
http://wiki.php.net/rfc/concatenation_precedence — Deprecate only: https://github.com/php/php-src/pull/4001/files
Compare:
interface I {
public function method(array $a);
}
class C implements I {
public function method(int $a) {}
}
// Fatal error: Declaration of C::method(int $a) must be compatible with I::method(array $a)
With:
class C1 {
public function method(array $a) {}
}
class C2 extends C1 {
public function method(int $a) {}
}
// Warning: Declaration of C2::method(int $a) should be compatible with C1::method(array $a)
PHP 8 — 😥