strtotime,Floor, Abs, Ceil Functions In PHP
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strtotime():- This function converts and English text DateTime into a unique timestamp but we have to wrap the result using this date format date(‘Y-m-d’) to avoid the errors. For example
<?php
$date = '1 January 2020';
echo date('Y-m-d',strtotime($date));
?>
The output is 2020-01-01
floor():- This function returns a number down to its nearest integer. For example
<?php
echo floor(0.30).'<br>';
echo floor(3).'<br>';
echo floor(3.3).'<br>';
echo floor(-3.3).'<br>';
?>
The output will be like this----
0
3
3
-4
Ceil():- This function returns a number up to its nearest integer. For example:-
<?php
echo ceil(0.30).'<br>';
echo ceil(3).'<br>';
echo ceil(3.3).'<br>';
echo ceil(-3.3).'<br>';
?>
The output will be like this----
1
3
4
-3
abs():- This function is an inbuilt PHP function that always returns a positive(+ve) or absolute number of any data type like integer, float, double etc. For example-
<?php
echo abs(3).'<br>';
echo abs(-3).'<br>';
echo abs(3.3).'<br>';
echo abs(-3.4).'<br>';
?>
The output will be like this------
3
3
3.3
3.4
Conclusion:- I hope this tutorial will help you to understand the strtotime(), floor(),abs() and ceil() functions in PHP.
Also Read, PHP Difference Between Two Dates In Years, Months And Days
