PHP and Algorithmic Thinking for the Complete Beginner

Chapter 10 Introduction to Sequence Control Structures

10.1 What is the Sequence Control Structure?

Sequence control structure refers to the line-by-line execution by which statements are executed sequentially, in the same order in which they appear in the program/script, without skipping any of them. They might, for example, carry out a series of read or write operations, arithmetic operations, or assignments to variables.

The following script shows an example of PHP statements that are executed sequentially.

 file_10.1

<?php

//Prompt the user to enter value for $num

$num = (int)readline("Enter a number: ");

 

//Calculate the square of $num