Conditionals

Programming basics

A conditional statement evaluates an expression and executes instructions depending on the outcome of the evaluation. Most of the time, the evaluation is boolean (true or false).

An example of a simple conditional in PHP:

<?php
# this file  is used to teach the VERY BASICS of conditions in php

$secret_number = 54;

$player_guess = 54;

if ($player_guess == $secret_number) {
     
     echo "You guessed it!";
     
     } elseif ($player_guess >= $secret_number) {
       
     echo "a bit high...";
     
     } elseif ($player_guess <= $secret_number) {
     
     echo "a bit low...";

     } 
  
?>

A video

This video references the C programming language and scratch, but the ideas about conditionals are excellent. In the case of conditionals, PHP and C share similar syntax (but not exact).

Standards

• Define the terms: variable, constant, operator, object.

See Also

• Conditionals in php

A unit of abstract mathematical system subject to the laws of arithmetic.

Give the precise meaning of a word, phrase, concept or physical quantity.