PHP if Statements: 006

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PHP if Statements
Conditional statements are used to perform different actions based on different conditions.

PHP Conditional Statements
Very often when you write code, you want to perform different actions for different conditions. You can use conditional statements in your code to do this.

In PHP we have the following conditional statements:

• if statement - executes some code if one condition is true
• if...else statement - executes some code if a condition is true and another code if that condition is false
• if...elseif...else statement - executes different codes for more than two conditions
  switch statement - selects one of many blocks of code to be executed

PHP - The if Statement
The if statement executes some code if one condition is true.

Syntax:

Code Select Expand

if (condition) {
  // code to be executed if condition is true;
}
Example
Output "Have a good day!" if $t is less than 20:

Code Select Expand

<?php
$t = 14;

if ($t < 20) {
  echo "Have a good day!";
}
?>