In PHP and Java, the main difference between functions is: parameter passing: PHP passes by value, Java passes by reference. Return value: PHP can return explicitly or not, Java must return a value matching the declaration. Access control: None for PHP, public, protected, default, private for Java. Anonymous functions: supported by PHP, not supported by Java. Optional parameters: PHP supports, Java only supports setting when declaring.
The difference between PHP functions and Java functions
In PHP and Java, two popular programming languages, functions play an important role character of. Although both languages allow functions to be defined and used, they differ in some ways.
Declaration Syntax
PHP:
function function_name([parameters]) { // 函数体 }
Java:
public static void function_name([parameters]) { // 函数体 }
Parameter passing
Return value
Access Control
Practical case
Consider the following function in PHP and Java to find the sum of two numbers:PHP:
function add($a, $b) { return $a + $b; }
Java:
public static int add(int a, int b) { return a + b; }
Other Differences
The above is the detailed content of What is the difference between PHP functions and Java functions?. For more information, please follow other related articles on the PHP Chinese website!