The if, elseif and else statements in PHP are used to perform different actions based on different conditions.
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[color=940306]Conditional Statements[/color]
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 -------------------------------------------------------------------------------- [color=940306]The If...Else Statement[/color]
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. [color=FA0309]Syntax[/color]
The following example will output "Have a nice weekend!" if the current day is Friday, otherwise it will output "Have a nice day!":
If you want to execute some code if one of several conditions are true use the elseif statement [color=FA0309]Syntax[/color]
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!":
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 -------------------------------------------------------------------------------- [color=940306]The If...Else Statement[/color]
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. [color=FA0309]Syntax[/color]
if (condition)
code to be executed if condition is true;
else
code to be executed if condition is false;
[color=FA0309]Example[/color]code to be executed if condition is true;
else
code to be executed if condition is false;
The following example will output "Have a nice weekend!" if the current day is Friday, otherwise it will output "Have a nice day!":
<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:
<body> <?php
$d=date("D");
if ($d=="Fri")
echo "Have a nice weekend!";
else
echo "Have a nice day!";
?> </body>
</html>
<html>
<body> <?php
$d=date("D");
if ($d=="Fri")
{
echo "Hello!<br />";
echo "Have a nice weekend!";
echo "See you on Monday!";
}
?> </body>
</html>
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[color=FA0309]The ElseIf Statement[/color]<body> <?php
$d=date("D");
if ($d=="Fri")
{
echo "Hello!<br />";
echo "Have a nice weekend!";
echo "See you on Monday!";
}
?> </body>
</html>
If you want to execute some code if one of several conditions are true use the elseif statement [color=FA0309]Syntax[/color]
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;
[color=FA0309]Example[/color]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;
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!":
<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>
<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>