Else-If Statement

Syntax

	if(condition_1)
	{
	statement_1_Block;
	}
	elseif(condition_2)
	{
	statement_2_Block;
	}
	elseif(condition_3)
	{
	statement_3_Block;
	}
	elseif(condition_n)
	{
	statement_n_Block;
	}
	else
	statement_x;

view raw elseif-syntax.txt hosted with by GitHub

Sample Program

	<?php
	if(10>5)
	{
	echo "IF condition is True.";
	}
	elseif(5<7)
	{
	echo "First elseif condition is True.";
	}
	elseif(6<7)
	{
	echo "Second elseif condition is True.";
	}
	elseif(5>2)
	{
	echo "Third elseif condition is True.";
	}
	else
	echo "All Conditions are False." ;
	?>

view raw elseif-example.php hosted with by GitHub

Output

In the above program, if the First condition is false then it will check the third condition, if it’s true then print it else check next condition and so on.

Ternary or Conditional Operator.

It works similar to the else-if statement. In this Operator, if the condition is true then it returns First-Expression else Second-expression.

Syntax

Variable = Condition ? Expression1 : Expression2

For Example:- $a = (5>1) ? “Greater” : “Less” ;

Sample program

<?php
$a = (5>1) ? “Greater” : “Less” ;
echo $a;
?>

Output

Switch Statement

It checks several constant values for an expression.

Syntax

switch(expression){
case expression1:
block of statements;
break;
case expression2:
block of statements;
break;
case expression-n:
block of statements;
break;
default:
block of statements;
}

Sample Program

	<?php
	$date = 19;
	switch ($date)
	{
	case 10:
	echo "Maths";
	break;
	case 12:
	echo "Science";
	break;
	case 15:
	echo "Social-Science";
	break;
	case 17:
	echo "English";
	break;
	case 19:
	echo "Hindi";
	break;
	case 22:
	echo "Java Programming";
	break;
	case 25:
	echo "PHP";
	break;
	default:
	echo "No Exam";
	}
	?>

view raw Switch-statement-Program.php hosted with by GitHub

Output

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Sushant Kumar

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