PHP ceil() Function

The PHP ceil() function rounds the number to the nearest bigger integer, providing precision in calculations. It is particularly useful in financial scenarios where accurate, rounded-up values are essential. Let's discuss the syntax of the ceil() function in PHP.

Syntax of ceil() in PHP

The syntax of the ceil() function in PHP is as follows:

Parameter Values of ceil() in PHP

The only parameter accepted by the ceil() function is $number, which should be a float. This parameter represents the value that needs to be rounded up.

The parameter usage is as follows:

Return Value of ceil() in PHP

The ceil() function returns the rounded-up value of the input number. It always returns a float, even if the input number itself is an integer. The returned value is the smallest integer greater than or equal to the input number. For example, ceil(4.3) will return 5.

PHP Version

Since its introduction in PHP 4.2.0, the ceil() function has been included as a standard part of the PHP language. It is compatible with all PHP versions, including PHP 5, PHP 7, and PHP`` 8.

PHP Changelog

Starting from PHP 4.2.0, the ceil() function has been accessible in all subsequent versions. No significant modifications or updates have been made to the ceil() function since its initial release.

Examples of ceil() in PHP

Here are some examples that show the application of the ceil() function in PHP

Example 1:

Output:

Explanation:

In this example, the value 2.34 is supplied to the ceil method. The ceil method converts it to the smallest integer greater than or equal to 2.34, which is 3 in this case. The result is displayed finally using the echo command.

Example 2:

Output:

Explanation:

In this example, the value -2.34 is supplied to the ceil method. The ceil method converts it to the smallest integer greater than or equal to -2.34, which is -2 in this case. The result is displayed finally using the echo command.

Example 3:

Output:

Explanation:

In this example, the value 10 is supplied to the ceil method. The ceil method converts it to the smallest integer greater than or equal to 10, which is 10 itself in this case. The result is displayed finally using the echo command.

Example 4:

Output:

Explanation:

In this example, the value -10 is supplied to the ceil method. The ceil method converts it to the smallest integer greater than or equal to -10, which is -10 itself in this case. The result is displayed finally using the echo command.