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
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- Who is Who
- Computer Glossary
- HR Interview Questions
- Effective Resume Writing
- Questions and Answers
- UPSC IAS Exams Notes
PHP 7 - Closure::call()
PHP 7 - Closure::call()
Closure::call() method is added as a shorthand way to temporarily bind an object scope to a closure and invoke it. It is much faster in performance as compared to bindTo of PHP 5.6.
Example - Pre PHP 7
<?php
class A {
private $x = 1;
}
// Define a closure Pre PHP 7 code
$getValue = function() {
return $this->x;
};
// Bind a clousure
$value = $getValue->bindTo(new A, A );
print($value());
?>
It produces the following browser output −
1
Example - PHP 7+
<?php
class A {
private $x = 1;
}
// PHP 7+ code, Define
$value = function() {
return $this->x;
};
print($value->call(new A));
?>
It produces the following browser output −
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