welcomewiki has just posted in the PHP Forum forum of Wiki Newforum under the title of PHP If...Else Statements.
This thread is located at http://www.wikinewforum.com/showthread.php?t=5854
Here is the message that has just been posted:
***************
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.
*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!":
<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:
<html>
<body> <?php
$d=date("D");
if ($d=="Fri")
{
echo "Hello!<br />";
echo "Have a nice weekend!";
echo "See you on Monday!";
}
?> </body>
</html>
*The ElseIf Statement*
If you want to execute some code if one of several conditions are true use the elseif statement
*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!":
<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>
***************
