PHP floor() Function
Last Updated :
29 Jun, 2022
We sometimes need to round down the float values to the next lowest integer in our maths problems.
PHP provides a built-in function floor() to get this task done through our PHP script. The floor() function in PHP rounds down the float value to the next lowest integer value.
Syntax:
float floor(value)
Parameters: This function accepts the single parameter value which is rounded down to the next lowest integer.
Return Value: The return type is a float value. It returns the next lowest integer value as a float which is rounded down, only if necessary.
Examples:
Input : floor(1.9)
Output : 1
Input : floor(-1.8)
Output : -2
Input : floor(4)
Output : 4
Note: floor() function is opposite to ceil() function in PHP
Below programs illustrate the floor() function in PHP.
- When a positive decimal number is passed.
PHP
<?php
echo floor (2.8);
?>
|
Output:
2
- When a negative decimal number is passed.
PHP
<?php
echo floor (-3.4);
?>
|
Output:
-4
- When a number without decimal places is passed.
Output:
2
Reference: https://www.php.net/manual/en/function.floor
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