PHP 7 Tutorial
PHP 7 Useful Resources
Selected Reading
- PHP 7 - Removed Extensions & SAPIs
- PHP 7 - Deprecated Features
- PHP 7 - Session Options
- PHP 7 - Integer Division
- PHP 7 - Error Handling
- PHP 7 - use Statement
- PHP 7 - Expectations
- PHP 7 - CSPRNG
- PHP 7 - IntlChar
- PHP 7 - Filtered unserialize()
- PHP 7 - Closure::call()
- PHP 7 - Anonymous Classes
- PHP 7 - Constant Arrays
- PHP 7 - Spaceship Operator
- PHP 7 - Null Coalescing Operator
- PHP 7 - Return Type Declarations
- PHP 7 - Scalar Type Declarations
- PHP 7 - Environment Setup
- PHP 7 - Performance
- PHP 7 - Introduction
- PHP 7 - Home
PHP 7 Useful Resources
Selected Reading
- Who is Who
- Computer Glossary
- HR Interview Questions
- Effective Resume Writing
- Questions and Answers
- UPSC IAS Exams Notes
PHP 7 - Return Type Declarations
PHP 7 - Return Type Declarations
In PHP 7, a new feature, Return type declarations has been introduced. Return type declaration specifies the type of value that a function should return. Following types for return types can be declared.
int
float
bool
string
interfaces
array
callable
Example - Vapd Return Type
<?php
declare(strict_types = 1);
function returnIntValue(int $value): int {
return $value;
}
print(returnIntValue(5));
?>
It produces the following browser output −
5
Example - Invapd Return Type
<?php
declare(strict_types = 1);
function returnIntValue(int $value): int {
return $value + 1.0;
}
print(returnIntValue(5));
?>
It produces the following browser output −
Fatal error: Uncaught TypeError: Return value of returnIntValue() must be of the type integer, float returned...Advertisements