Website developers in California or India, East Europe or Brazil, all use PHP to build their dynamic websites for schools, hospitals, blogs, stores, any many more such projects because it is easy, simple, powerful and dynamic.
Clients routinely hire PHP developers in India to maintain their existing websites, upgrade them, revamp them or to build an entirely new website with great appeal and zippy functionality.
New Features in PHP 8
1. New Features
(2) Just-In-Time (JIT) Compiler
(3) The null safe operator
(4) Named arguments
(5) Attributes
(6) Match expression
(7) Constructor property promotion
(8) New static return type
(9) New mixed type
(10) Throw expression
(11) Inheritance with private methods
(12) Weak Maps
(13) Allowing ::class on objects
(14) Non-capturing catches
(15) Trailing comma in parameter lists
(16) Create DateTime objects from the interface
(17) New Stringable interface
(18) Abstract methods in traits improvements
(19) Object implementation of token_get_all()
(20) Variable syntax tweaks
(21) Type annotations for internal functions
(22) ext-JSON always available
(23) Consistent type errors
(24) The @ operator no longer silences fatal errors
(25) Default error reporting level
(26) Concatenation precedence
(27) Stricter type checks for arithmetic and bitwise operators
(28) Namespaced names being a single token
(29) Saner numeric strings
(30) Saner string to number comparisons
(31) Reflection Method Signature Changes
(32) Stable Sorting
(33) Fatal Error for Incompatible Method Signatures
![php_tedxt php-8](https://raindropsinfotech.com/wp-content/uploads/2020/11/php_tedxt.png)
2. Reclassified Engine Warnings
3. New PHP Functions
(2) New str_starts_with() and str_ends_with() functions
(3) New fdiv() function
(4) New get_debug_type() function
(5) get_resource_id() function
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1. Union Types
public function foo(Foo|null $foo): void;
public function bar(?Bar $bar): void;
class Number {
private int|float $number;
public function setNumber(int|float $number): void {
$this->number = $number;
}
public function getNumber(): int|float {
return $this->number;
}
}
- strict enforcement of types, so mistakes are caught early.
- Type information is less likely to become outdated or miss border-cases.
- Types are checked during inheritance, enforcing the Liskov Substitution Principle that any method should return the same type as that of its parent.
- Type information is accessible at runtime through reflection.
- The syntax is a lot more formal than phpdoc.
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2. The Just-In-Time Compiler (JIT Compiler)
![php-innerblog](https://raindropsinfotech.com/wp-content/uploads/2020/11/php8_inerblog.jpg)
- Lexing/Tokenizing: First, the interpreter reads the PHP code and builds a set of tokens.
- Parsing: The interpreter checks if the script matches the syntax rules and uses tokens to build an Abstract Syntax Tree (AST), which is a hierarchical representation of the structure of source code.
- Compilation: The interpreter traverses the tree and translates AST nodes into low-level Zend opcodes, which are numeric identifiers determining the type of instruction performed by the Zend VM.
- Interpretation: Opcodes are interpreted and run on the Zend VM.
3. Named arguments
function foo(string $a, string $b, ?string $c = null, ?string $d = null) {
/* function definition */
}
/* function call */
foo( b: ‘value b’, a: ‘value a’, d: ‘value d’, );
4. Match expression
- The match expression is significantly shorter to code,
- It can return values
- It needs no break statements,
- The match can combine conditions,
- It does not coerce any type.
switch ($statusCode) {
case 200:
case 300:
$message = null;
break;
case 400:
$message = ‘not found’;
break;
case 500:
$message = ‘server error’;
break;
default:
$message = ‘unknown status code’;
break;
}
$message = match ($statusCode) {
200, 300 => null,
400 => ‘not found’,
500 => ‘server error’,
default => ‘unknown status code’,
};
5. New mixed type
- A function returning nothing or null
- The return value may be one of many types
- The return value is a type that cannot be suggested in PHP
class Example {
public mixed $exampleProperty;
public function foo(mixed $foo): mixed {}
}
Conclusion
This way our team can deliver for you the most efficient, secure and robust solutions. Our experienced and professional team of PHP developers is all set to embrace and work with PHP 8 as and when it is released and unleash the full of the improvements for your benefit.