The elseif Construct
The elseif construct is used together with if to check additional conditions
if the previous if or elseif condition was false. It allows creating
chains of conditions and executing different code blocks depending on the check result.
Syntax
if (condition1) {
// code if condition1 is true
} elseif (condition2) {
// code if condition2 is true
} else {
// code if all conditions are false
}
Example
Let's check the value of a variable and output the corresponding message:
<?php
$num = 10;
if ($num > 15) {
echo 'The number is greater than 15';
} elseif ($num > 5) {
echo 'The number is greater than 5 but not greater than 15';
} else {
echo 'The number is 5 or less';
}
?>
Code execution result:
'The number is greater than 5 but not greater than 15'
Example
Let's check the data type of a variable:
<?php
$var = '123';
if (is_int($var)) {
echo 'This is an integer';
} elseif (is_string($var)) {
echo 'This is a string';
} else {
echo 'This is another data type';
}
?>
Code execution result:
'This is a string'
