Description
If Statements are conditional statements, if statement is used to perform the action depending on the condition.
Syntax
if (condition) {
code to be executed if condition is true;
}
- If -Statement
- If...Else Else Statement
- If...Elseif...Else Statement
Description
PHP If will execute the code inside the if statement only, when the if condition is 
true.
Example
[php]
<!DOCTYPE html>
<html>
<body>
<?php
$x = 30;
if($x<=30)
{
echo "SP Lessons";
}
?>
</body>
</html>
[/php]
Output:
Description
PHP If Else will executes the code inside the 
if statement only if the condition is true, otherwise it will allows to executes else block for the if condition.
Example
[php]
<!DOCTYPE html>
<html>
<body>
<?php
$x = 30;
if($x>30)
{
echo "SPLessons";
}
else{
echo "Welcome to SPLessons!!";
}
?>
</body>
</html>
[/php]
Output:
Description
First the controller checks the
if Statement condition.If the condition true, if statement block executes, otherwise the controller goes to elseif statement.If the condition is true here, the elseif Statement block will execute, otherwise again it will go to the next level else block and the process continues. Example
[php]
<!DOCTYPE html>
<html>
<body>
<?php
$x = 30;
if ($x > 100)
{
echo "SPLessons";
}
elseif($x>=50)
{
echo "Welcome to SPLessons";
}
else
{
echo "Welcome to SPLessons world!!";
}
?>
</body>
</html>
[/php]
Output:
Key Points
- If statement executes when the if condition is true.
- PHP If else executes only if the condition of if is true, otherwise it will allows to executes else block for the if condition.