php conditional statement with if else elseif

Posted By Bajarangi soft , Posted On 02-02-2024

if elseif and else statements in PHP. In PHP, the if statement is used to make decisions based on conditions

PHP Conditional Statements

While writing programs/scripts, there will be scenarios where you would want to execute a particular statement only if some condition is satisfied. In such situations we use Conditional statements.

There are several statements in PHP that you can use to make decisions:

The if statement
The if...else statement
The if...else...if statement
Switch case statement

if Statement

The if statement allows you to check if a particular condition evaluates to true. If the statement is true, PHP will run the code within the curly brackets ({}).
This is the simplest PHP's conditional statements and can be written like this,

if(condition) {
// your code goes here
}

Example :

<?php
$age = 19;
if ($age > 18) {
echo "You are eligible for voting";
}
?>

Output :

You are eligible for voting

The if...else statement

We use if..else condition when one condition if true and another conditionis false.

if(condition)
{
// true condition
}
else
{
// false condition
}

Example :

<?php
$age = 17;

if ($age > 18) {
echo "You are eligible for voting";
}
else{
echo "Yor are not eligible for voting";
}
?>

Output :

Yor are not eligible for voting

The if...else...if statement

If we have more than two condition then we can use If...else...if statement for check multiple conditions.

if(condition1) {
// if condition1 is true
} elseif(condition2) {
// if the condition1 is false and condition2 is true
} else{
// if both condition1 and condition2 are false
}

Example :

<?php
$age = 19;
if ($age < 18)
{
echo "You are not eligible for voting";
}
elseif ($age>50)
{
echo "over aged person";
}
else
{
echo "Yor are eligible for voting";
}
?>

Output :

Yor are eligible for voting

Switch case statement

When we have to check multiple condition for one statement then we use switch case statement.
Default statement is last statement if any case does not match then it will use default case.
every break statement terminate the statements If break is not used, all the statements will execute after finding matched case value.

switch(expression){
case value1:
//code to be executed
break;
case value2:
//code to be executed
break;
......
default:
code to be executed if all cases are not matched;
}

Example :

<?php
$day = 5;
switch($day){
case "1":
echo "Today is Monday.";
break;
case "2":
echo "Today is Tuesday.";
break;
case "3":
echo "Today is Wednesday.";
break;
case "4":
echo "Today is Thursday.";
break;
case "5":
echo "Today is Friday.";
break;
case "6":
echo "Today is Saturday.";
break;
case "7":
echo "Today is Sunday.";
break;
default:
echo "Enter valid day";
break;
}
?>

Output :

Today is Friday.