if...else...elseif Statements in PHP

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If & else statement also knows as conditional statements. In this blog we will learn how to use conditional statements in PHP.

We can use conditional statements in PHP by following ways:

  1. if statement - executes some code if one condition is true
  2. if...else statement - executes some code if a condition is true and another code if that condition is false
  3. if...elseif...else statement - executes different codes for more than two conditions
  4. switch statement - selects one of many blocks of code to be executed

if statement in PHP:

Syntax:

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

Example: Check Currently AM

<?php

$t = date("H");
if ($t < "12") {
  echo "It is currently AM";
}

?>


if...else statement in PHP:

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


Example: Check Currently AM or PM 

<?php

$t = date("H");


if ($t < "20") {

  echo "Have a good day!";

} else {

  echo "Have a good night!";

}

?>


if...elseif...else statement in PHP:

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


Example: 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!": 

<?php

$t = date("H");


if ($t < "10") {

  echo "Have a good morning!";

} elseif ($t < "20") {

  echo "Have a good day!";

} else {

  echo "Have a good night!";

}

?>

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