1. Conditional statement & LOOPS
Chapter 5
Conditional statement & LOOPS

2. Conditional Statements
Very often when you write code, you want to perform different actions for different decisions:-
If-statement
If-else-statement
If-elseif-else statement

3. Conditional Statements
#Example
<?php
$t = date(“H”);
if ($t< “10”) {
echo”Have a good morning”; }
else if ($t < “20”) { echo”Have a good day”;
} else {
echo”Have a good night”;
?>

4. Conditional Statements
Selects one of many blocks of code to be executed
<?php
$favcolor = “red”;
switch ($favcolor) {
case “red”:
echo”Your favourite color is red!”;
break;
case”green”:
echo” Your favourite color is green!”;
default:
echo”Your favourite color is missing”; }
?>

5. Loops
Often you want write code, you want the same block of code to run over and over again in a row.
While
Do..while
For
Foreach (Array)

6. Loops #Example 1 <?php $x = 1; while ($x <=5) {
echo “Number of x is : $x<br>”;
$x++; }
?>

7. Loops #Example 2 <?php $x = 1; do {
echo “Your number is : $x<br>”; } while ($x <=5)
?>

8. Loops #Example 3 <?php for ($x = 0; $x <=10; $x++) {
echo”The number is : $x <br>”; }
?>

9. Loops #Example 4 <?php $num = array(“1”,”2”,”3”,”4”);
foreach($num as $val) { echo $num.”<br>”; }
?>

10. Exercise #Exercise 1 (write code using IF-ELSEIF-ELSE statement) Mark
Gred
80 – 100 A B
Below 79 C

11. Exercise #Exercise 2 (write code using WHILE statement) Num Operation5 4
+ 10 3 2 1

12. Exercise #Exercise 3 (write code using FOR statement) Num Total, R
Status 1
If R more than 1300, display status equal to “High”, else status equal to “Low” 2
+ 200 3