PHP If , If else and if else if statement -Zhullyblog

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PHP conditional statement
As we keep moving further , we would find out that there are certain situations where you need your code to perform a task based on a certain condition.

And that is what leads us to conditional statement.

What is a conditional statement?
A conditional statement is a statement that the output is based on the condition specified. Conditional statement helps you make decisions.

There are 4 conditional statement which are :

• The if statement
• The if….else statement
• The if…elseif….else statement
• The switch case statement

The If statement

The if statement is simple because it only display the output only when the condition is true.
SYNTAX
If (condition) {
//The statement
}

Let’s take an example

<?php

$num = 18;

if($age >= 10)
{
    echo "Number is valid";
}
?>

The if else statement

The if else statement is used when there is need for an alternative choice. By alternate , I mean if the condition isn't true, the output displays the else statement.
Unlike the if statement that displays blank if the condition returns false.

SYNTAX
If (condition) {
//Code
} else {
//Code
}

Let’s take an example

<?php

$age = 18;

if($age <= 20)
{
    echo "You cannot visit the link";
}
else 
{
    echo "You can please";
}
?>

Here is the result.

The If…elseif…else statement

This is used to combine multiple if…else statement.

SYNTAX
If(condition){
//Body of the code
}elseif{
//Body of the code
}else{
//Body of the code
}

Here is an example

<?php
$temp = 120;

if($temp < 60)
{
    echo "You are falling sick";
}
elseif($temp > 150 && $temp < 50)
{
    echo "You are burning up";
}
else 
{
    
    echo "This temperature is bad";
}
?>