function changes($selected_words)
{
list($uppercase, $symbol, $number) = checkBoxboolean();
if ($uppercase) {
$selected_words = addUpperCase($selected_words);
}
if ($symbol) {
$selected_words = addSymbols($selected_words);
}
if ($number) {
$selected_words = addNumbers($selected_words);
}
return arrayConcatenateAndShuffle($selected_words);
}
function displayArith($string)
{
$match = preg_match('/([\\d]+)([\\+\\*\\-])([\\d]+)/', $string, $matches);
if (!$match) {
throw new Exception("the expression is incorrect {$string}");
}
$firstNumber = $matches[1];
$secondNumber = $matches[3];
$operator = $matches[2];
switch ($operator) {
case '+':
addNumbers($firstNumber, $secondNumber);
break;
case '-':
subtractNumbers($firstNumber, $secondNumber);
break;
case '*':
multiplyNumbers($firstNumber, $secondNumber);
break;
default:
throw new Exception("undefined operator " . $operator);
}
}
<?php
function hello()
{
print "<h1>HELLO!</h1>";
print "<p>Welcome to my web site</p>";
}
function printBreak($text)
{
for ($x = 0; $x <= 10; $x++) {
echo "The number is: {$x} <br>";
}
print "{$text}<br>";
}
function addNumbers($num1, $num2)
{
return $num1 + $num2;
}
hello();
printBreak("This is a line");
print addNumbers(3.75, 5.645);
<?php
function addNumbers($number1, $number2)
{
if (is_numeric($number1) and is_numeric($number2)) {
$result['answer'] = $number1 + $number2;
$result['status'] = true;
$result['message'] = "The answer is ";
return $result;
} else {
$result['answer'] = null;
$result['status'] = false;
$result['message'] = "Unable to calculate. Non-numeric data.";
return $result;
}
}
$answer = addNumbers('2', 'all');
if ($answer['status']) {
echo $answer['message'] . $answer['answer'];
} else {
echo $answer['message'];
}
is_array : is_bool : is_double : is_int : is_null :
is_numeric : is_string
*/
// empty() returns true or false if a var has a non-zero value
echo 'Does $biggestNum exist ';
echo empty($biggestNum) ? 'false' : 'true';
echo "</br></br>";
// isset() returns true or false if a variable exists
echo 'Does $biggestNum exist ';
echo isset($biggestNum) ? 'true' : 'false';
echo "</br></br>";
// You can execute unix commands by surrounding with `s
echo `ls -la`;
// Unix or OSX
// echo `dir /w`; WINDOWS
echo "</br></br>";
/*
Functions allow you to reuse code
A function must begin with a letter, but can contain
numbers and underscores
*/
function addNumbers($num1, $num2)
{
return $num1 + $num2;
}
echo "3 + 4 = " . addNumbers(3, 4);
?>
</body>
</html>
<?php
// This is known as the function "declaration"
/**
* Add two numbers together
* @param int $num1 First number
* @param int $num2 Second number
* @return int This returns the sum of two numbers
*/
function addNumbers($num1, $num2)
{
return $num1 + $num2;
}
// Function usage
$sum = addNumbers(21, 43);
echo 'sum = ' . $sum;
* @param int $b
*
* @return int
*/
public function add($a, $b)
{
return $a + $b;
}
/**
* @param int $a
* @param int $b
*
* @return int
*/
public function multiply($a, $b)
{
return $a * $b;
}
}
/**
* @param int $a
* @param int $b
*
* @return int
*/
function addNumbers($a, $b)
{
return $a + $b;
}
echo "98 + 3 = " . addNumbers(98, 3);
<?php
/**
* Using the require_once keyword we can include external files which contain functions we can then call.
*/
require_once "functions.php";
echo sayHello("Nick");
//=> Hello Nick
echo addNumbers(10, 20);
//=> 30
*/
doSomething();
function doSomething()
{
echo "This function has been invoked";
}
function doSomething2()
{
echo "This function has been invoked";
}
function addNumbers($number01, $number02)
{
$sum = $number01 + $number02;
echo "<p> Sum is: {$sum}</p>";
}
addNumbers(56, 325);
echo "<p>Write and then invoke a function</p>";
function addNumbersWithReturn($number01, $number02)
{
$sum = $number01 + $number02;
return $sum;
}
$result = addNumbersWithReturn(4, 234);
echo "<h1>{$result}</h1>";
echo "<h1>" . addNumbersWithReturn(4, 234) . "</h1>";
if (isset($myName) == true) {
echo "<p> Variable does exist</p>";
echo $myName;
} else {
echo "<p> Variable does NOT exist</p>";
}
<?php
$tajuk = "Return Values Function";
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>PHP | <?php
echo $tajuk;
?>
</title>
</head>
<body>
<?php
function addNumbers($number1, $number2)
{
$sum = $number1 + $number2;
return $sum;
}
$result = addNumbers(34, 45);
$result = addNumbers(100, $result);
echo $result;
?>
</body>
</html>
<?php
// make a function which makes an addition equation
function addNumbers($num1, $num2)
{
return $num1 . " + " . $num2 . " = " . ($num1 + $num2);
}
// write out a few simple problems
echo addNumbers(3, 5) . "<br>";
echo addNumbers(10, 20) . "<br>";
echo addNumbers(800, 200) . "<br>";
echo addNumbers(600, -200) . "<br>";
//create the array to hold the user dater and load $_GET into it
$userArray = array();
foreach ($_GET as $key => $value) {
$userArray[$key] = $value;
}
//Declare default values for variables
$numberOfWords = 4;
$separator = "";
//check that the variable keys exist in the userArray and load them if they do
if (array_key_exists("numberOfWords", $userArray) && is_numeric($userArray["numberOfWords"]) && $userArray["numberOfWords"] > 0) {
$numberOfWords = $userArray["numberOfWords"];
}
if (array_key_exists("separator", $userArray)) {
$separator = $userArray["separator"];
}
//build the word portion of the password
$passWords = selectWords($wordList, $numberOfWords, $separator);
//if special characters are selected add them to the end
if (array_key_exists("numSpecChar", $userArray) && is_numeric($userArray["numSpecChar"])) {
$passWords = addSpecialChar($passWords, $userArray["numSpecChar"]);
}
//add a random number between 0 and 9 to the end of the password
if (array_key_exists("numberInc", $userArray) && $userArray["numberInc"] > 0) {
$passWords = addNumbers($passWords);
}
//chop the password down to the maximum length if required - cuts from the front
if (array_key_exists("maximumLength", $userArray) && is_numeric($userArray["maximumLength"]) && $userArray["maximumLength"] > 0) {
$passWords = maxLength($passWords, $userArray["maximumLength"]);
}
//display the password
echo '<h4 class="passwordSection"> <br>' . $passWords . '</h4>';
<html>
<head lang="en">
<meta charset="UTF-8">
<title>functions - Joris Bulters - MD2A</title>
</head>
<body>
<?php
include 'functions.php';
//See http://bovi.hosts.ma-cloud.nl/md2_bap/p2_w1_functions/
writeHello();
writeMsg('Hello person that reads this.');
writeMsg('Bye Bye mysterious person.');
writeMsgTo('Mysterious person', 'Welcome on this page.');
$outcome = addNumbers(5, 7);
echo 'The outcome of 5 + 7 = ' . $outcome . '<br/>';
$outcome = calcRectNumb(5, 7);
echo 'The area of a rectangle of 5 and 7 = ' . $outcome . '<br/>';
?>
<br>
<hr>
<h3>Currency Calculator</h3>
<form action="money.php" method="post">
<p><input type="text" name="money" placeholder="Dollars -> Euros"></p>
<p><input type="submit" value="Verstuur" name="go"></p>
<p><input type="reset" value="Reset"></p>
</form>
<?php
function addNumbers($number1, $number2)
{
$result = $number1 + $number2;
return $result;
}
$answer = addNumbers('2', '3');
echo $answer;
addSix($orignum);
echo "Original Value is {$orignum}<br />";
?>
<!-- ==== reutn statement in Function === -->
<br>
<?php
function addNumbers($num1, $num2)
{
$sum = $num1 + $num2;
return $sum;
}
$return_value = addNumbers(10, 20);
echo "Returned value from the function : {$return_value}";
?>
<br>
<?php
function addFunction2($num1, $num2, $num3)
{
$add = $num1 + $num2;
$sub = $num3 - $num1;
return array($add, $sub);
}
$result = addFunction2(10, 20, 30);
echo " Result 1 = " . $result[0] . "<br>";
