if else and elseif statement in php

If Else And Elseif Statement In Php

The if, elseif and else statements in PHP are used to perform different actions based on different conditions.

Conditional Statements :

Very often when you write code, you want to perform different actions for different decisions.

You can use conditional statements in your code to do this.

if...else statement - use this statement if you want to execute a set of code when a condition is true and another if the condition is not true

elseif statement - is used with the if...else statement to execute a set of code if one of several condition are true

The If...Else Statement :

If you want to execute some code if a condition is true and another code if a condition is false, use the if....else statement.

Flowchart :

Syntax :

Syntax

if (condition)
code to be executed if condition is true;
else
code to be executed if condition is false;

Example :

The following example will output "Have a nice weekend!" if the current day is Friday, otherwise it will output "Have a nice day!" :

CODE/PROGRAM/EXAMPLE

<html>
<body>
<?php
$d=date("D");
if ($d=="Fri"){
echo "Have a nice weekend!";
}
else{
echo "Have a nice day!";
}
?>
</body>
</html>

If more than one line should be executed if a condition is true/false, the lines should be enclosed within curly braces:

CODE/PROGRAM/EXAMPLE

<html>
<body>
<?php
$d=date("D");
if ($d=="Fri")
{
echo "Hello!<br />";
echo "Have a nice weekend!";
echo "See you on Monday!";
}
?>
</body>
</html>

ElseIf Statement :

If you want to execute some code if one of several conditions are true use the elseif statement

Flowchart :

Syntax

Syntax

if (condition){
code to be executed if condition is true;
}
elseif (condition){
code to be executed if condition is true;
}
else{
code to be executed if condition is false;
}

Example :

The following example will output "Have a nice weekend!" if the current day is Friday, and "Have a nice Sunday!" if the current day is Sunday. Otherwise it will output "Have a nice day!":

CODE/PROGRAM/EXAMPLE

<html>
<body>
<?php
$d=date("D");
if ($d=="Fri")
{
echo "Have a nice weekend!";
}
elseif ($d=="Sun")
{
echo "Have a nice Sunday!";
}
else
{
echo "Have a nice day!";
}
?>
</body>
</html>

#if_else_in_php #elseif_in_php #Conditional_Statements__in_php #_If...Else_Statement_in_php #

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