Master these pro tricks to write efficient PHP: Null coalescing (??), array destructuring, spaceship operator (<=>), short ternary (?:), and variadic functions (...). Save time, reduce clutter, and boost performance!
                                        1. Null Coalescing Operator (??)
Quickly assign defaults if a variable is unset or null:
$username = $_POST['name'] ?? 'Anonymous'; // No isset() needed!  2. Array Destructuring
Unpack arrays into variables in one line:
[$firstName, $lastName] = explode(' ', 'John Doe'); // $firstName = 'John', $lastName = 'Doe'  3. Spaceship Operator (<=>)
Compare values easily (returns -1, 0, or 1):
usort($users, fn($a, $b) => $a['age'] <=> $b['age']); // Sort users by age  4. Short Ternary (?:)
Quick fallback for falsy values (but careful—unlike ??, it checks for falsy, not just null):
$status = $user->getStatus() ?: 'pending'; // If falsy (e.g., empty string, 0), use 'pending'  5. Variadic Functions (...)
Accept unlimited arguments effortlessly:
function mergeStrings(...$strings) {  
   return implode(' ', $strings);  
}  
mergeStrings('Hello', 'world', '!'); // "Hello world !"  Why these?
- Spaceship operator simplifies sorting/comparisons.
 - Short ternary is handy (but know its quirks vs 
??). - The rest remain clean, modern, and widely useful.
 
Good for PHP 7.0+! 🚀
Happy Coding! 😊