Strict comparison using === between false and string will always evaluate to false.

Strict comparison using === between false and string will always evaluate to false.

Offset 'host' on array{0: string, user: string, 1: string, 2: string, pass: string, 3: string, host: non-falsy-string, 4: non-falsy-string, ...} in isset() always exists and is not nullable.

Result of && is always true.

Strict comparison using !== between '' and non-falsy-string will always evaluate to true.

Offset 'user' on array{0: string, user: string, 1: string, 2: string, pass: string, 3: string, host: non-falsy-string, 4: non-falsy-string, ...} in isset() always exists and is not nullable.

Offset 'pass' on array{0: string, user: string, 1: string, 2: string, pass: string, 3: string, host: non-falsy-string, 4: non-falsy-string, ...} in isset() always exists and is not nullable.