PHP ceil() function

The ceil() function is often used to calculate the mathematical problems. It is in-built function to find the round number up to the nearest integer.

Note1 : To round a number down to the nearest integer, then use floor() function.

Note2 : To round a floating-point number, then use round() function.

Syntax:

It returns the next highest value by rounding up value if necessary.

$PHP math ceil function$

Parameter	Description	Required /Optional
Value	Specifies the value to round up.	Required

Example1

<?php
echo ceil(0.99);
?>

Output:

Example2

<?php
echo ceil(4.34);
?>

Output:

Example 3

<?php
echo ceil(-4.34);
?>

Output:

-4

Example4

<?php
echo ceil(-6.9);
?>

Output:

-6

Example 5

<?php
$value = 66.4;
echo (ceil($value * 100) / 100)."<br>"; // 66.41 - WRONG!
echo ceil((string)($value * 100)) / 100; // 66.4 - OK!
?>

Output:

66.41
66.4

Example 6

<?php
$value = 77.4;
echo "The actual value: $value"."<br>";
echo "The ceil() used: ".(ceil($value * 100) / 100)."<br>"; // 77.41 - WRONG!
echo "The round() used: ".ceil(round($value * 100)) / 100; // 77.4 - OK! // 55.4 - OK!
?>

Output:

The actual value: 77.4
The ceil() used: 77.41
The round() used: 77.4

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PHP ceil() function

Note1 : To round a number down to the nearest integer, then use floor() function.

Note2 : To round a floating-point number, then use round() function.

Syntax:

Example1

Example2

Example 3

Example4

Example 5

Example 6

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