PHP Control Statement If ... else_php Tutorials

The If, ElseIf, and ELSE statements are used to perform different actions based on different conditions.

Conditional statements

When you write code, you often need to perform different actions for different judgments. You can use conditional statements in your code to accomplish this task.

If...else statements

Executes a piece of code when the condition is established, and executes another piece of code when the condition is not true

ElseIf statements

Used in conjunction with If...else to execute a block of code when one of several conditions is established

If ... Else statement

Use the If....else statement if you want to execute some code when a condition is set up and execute another code when the condition is not true.

Grammar

if (condition) code to being executed if condition is True;else

Instance

If the current date is Friday, the following code will output "a nice weekend!", otherwise it will output "a nice day!" ：

"; echo "has a nice weekend!"; echo "See you on monday!"; }? >

ElseIf statements

If you want to execute code when one of several conditions is true, use the ElseIf statement:

Grammar

if (condition) code to being executed if condition is true;elseif (condition) code to being executed if condition is TR Ue;else

Instance

If the current date is Friday, the following example outputs "a nice weekend!", and if it is Sunday, the output "has a nice sunday!", otherwise the output "has a nice day!" ：

echo "a nice day!"; ? >

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