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17-function_arguments.php
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<h1>PHP Function Arguments</h1>
<?php
// create calculateSalary function
function calculateSalary($baseSalary, $otRate, $otTime, $tax=10) {
$totalOt = $otRate * $otTime;
$totalSalary = $baseSalary + $totalOt;
$salaryTax = $totalSalary * ($tax / 100);
$finalSalary = $totalSalary - $salaryTax;
// $baseSalary = 200;
return $finalSalary;
}
// Passing arguments by reference
function changeSalaryTo1K(&$baseSalary) {
$baseSalary = 1000;
}
// function nameFunction($args=[]) {
// }
// php >= 8.0
$baseSalary = 270;
changeSalaryTo1K($baseSalary);
// Positional arguments
// $daraSalary = calculateSalary(270, 15, 4, 20);
// Named argument
$daraSalary = calculateSalary(
baseSalary: $baseSalary,
otRate: 15,
otTime: 4,
tax: 10,
);
echo "Dara baseSalary: ".$baseSalary;
echo "<br>Dara Salary: ".$daraSalary;
// Dara 270, 15, 4, 10%
// Variable-length argument lists
function sum(...$numbers) {
$acc = 0;
foreach ($numbers as $n) {
$acc += $n;
}
return $acc;
}
echo '<br><br>Variable-length argument lists';
echo '<br>Sum (1, 2, 3, 4) = '.sum(1, 2, 3, 4);
?>
</html>