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PHP if...else...elseif Statements


Conditional statements are used different actions based on different conditions.You can conditional statements in your code to make your decisions.


PHP Conditional Statements

PHP you must following conditional statements:

  • if statement -use this statement executes some code when if one condition is true
  • if...else statement - is used executes some code if a condition is true and another code if that condition is false
  • if...elseif....else statement - is used executes different codes for more than two conditions
  • switch statement - is used selects one of many blocks of code to be executed

PHP - The if Statement

If you want to The if statement executes some code if one condition is true.

Syntax

if (condition) {
    code to be executed if condition is true
;
}

The example below will output "WE ARE DOING!" if the current time D (Day) is less than A:

Example

<?php
$t = date("D");

if ($t < "A") {
    echo " WE ARE DOING!";
}
?>

PHP - The if...else Statement

The if....else statement executes some code if a condition is true and another code if that condition is false.

Syntax

if (condition) {
    code to be executed if condition is true;
} else {
    code to be executed if condition is false;
}

The example below will output "have a pan !" if the current time is less than 20, and "Have a good night!" otherwise:

Example

<?php
$t = date("H");

if ($t < "20") {
    echo "you are programmer!";
} else {
    echo "Have a good night!";
}
?>

PHP - The if...elseif....else Statement

The if....elseif...else statement for more than two conditions.

Syntax

if (condition) {
    code to be executed if this condition is true;
} elseif (condition) {
    code to be executed if this condition is true;
} else {
    code to be executed if all conditions are false;
}

The example below will output "Have a good morning!" if the current time is less than 10, and "Have a good day!" if the current time is less than 20. Otherwise it will output "Have a good night!":

Example

<?php
$t = date("H");

if ($t < "10") {
    echo "Have a good morning!";
} elseif ($t < "30") {
    echo "good morning!";
} else {
    echo " good night!";
}
?>