how to define function in php
<?php
function writeMsg() {
echo "Hello world!";
}
writeMsg(); //call the function
?>how to define function in php
<?php
function writeMsg() {
echo "Hello world!";
}
writeMsg(); //call the function
?>function php
function functionName() {
//code to be executed;
}php functions parameters
// functions require 'function' keyword
// separate the parameters with a comma
function addFunction($num1, $num2) {
$sum = $num1 + $num2;
echo "Sum of the two numbers is : $sum";
}
addFunction(1, 2); // echoes: Sum of the two numbers is : 3php function
<html>
<head>
<title>Writing PHP Function with Parameters</title>
</head>
<body>
<?php
function addFunction($num1, $num2) {
$sum = $num1 + $num2;
echo "Sum of the two numbers is : $sum";
}
addFunction(10, 20);
?>
</body>
</html>php functions
#functions
<?php
#function - a block of code that can be repeatedly called
/*
How to format functions
1. Camel Case myFunction()
2.Lower case with underscore my_function()
3. Pascal Cae - MyFunction() usally used with classes
*/
function simpleFunction(){
echo 'Hello John';
}
//Run the function like so
simpleFunction();
//function with param
function sayHello($name = " you out there!"){
echo "<br>and<br> Hello $name<br>";
}
sayHello('John');
sayHello();
//Reurn Value
function addNumbers($num1, $num2){
return $num1 + $num2;
}
echo addNumbers(2,3);
// By Reference
$myNum = 10;
function addFive($num){
$num += 5;
}
function addTen(&$num) {
$num += 10;
}
addFive($myNum);
echo "<br>Value: $myNum<br>";
addTen($myNum);
echo "Value: $myNum<br>";
?>php function use
// Inherit $message
$example = function () use ($message) {
var_dump($message);
};
$example();Copyright © 2021 Codeinu
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