PHP exact division to get integer result

The division operator (/) in PHP performs floating-point division by default. If you need to get the integer result of the quotient, you can use the following method: floor() function: round down the integer (example: floor(10.5) = 10) ceil() function: round up an integer (for example: ceil(10.5) = 11) truncation operator (//): truncate to an integer modulo operator (%): check whether the remainder is 0 to determine whether the result is an integer

PHP Exact division to get integer result

Introduction

Division operation in PHP Symbol / defaults to floating point division. However, sometimes we need to take the integer part of the quotient. This can be achieved by using the floor() or ceil() function.

floor() function

floor() The function returns an integer that is rounded down. For example:

$result = floor(10.5); // 结果为 10

ceil() function

ceil() The function returns an integer that is rounded up. For example:

$result = ceil(10.5); // 结果为 11

Practical case

Suppose we have a program that needs to calculate the integer part of the quotient of two numbers. We can use the following code:

<?php

$num1 = 10;
$num2 = 3;

$result = floor($num1 / $num2);

echo $result; // 输出为 3

In the above example, we first declared two variables $num1 and $num2, and then used floor () The function calculates the integer part of their quotient. The result is stored in the $result variable and output.

Other methods

In addition to using the floor() and ceil() functions, you can also use the following methods To get the integer part:

• Truncation operator (//): Truncate the number into integers.
• Modulo operator (%): Returns the remainder of the division operation and can be used to check whether the result is an integer.

Choose the appropriate method according to specific needs.

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