How to convert negative numbers to positive integers in php

php method to convert negative numbers to positive integers: 1. Use the abs() function to convert negative numbers to positive numbers, use the intval() function to round positive numbers and convert them to positive integers, the syntax "intval( abs($number))"; 2. Use the "~" bit operator to invert a negative number and add one, the syntax is "~$number 1".

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

php convert negative numbers Methods for positive integers

Method 1: Use abs() and intval() functions

• abs() The function converts negative numbers into positive numbers

• intval() function rounds positive numbers and converts them into positive integers

Implementation code:

<?php
$number=-12.35;
var_dump($number);
$result =intval(abs($number));
var_dump($result);
?>

Method 2: Use the "~" bit operator to invert the negative number and add one

<?php
function plus_minus_conversion($number = 0){
    echo ~$number + 1;
}
echo plus_minus_conversion(-100.58);
?>

Explanation:

After taking the inverse of a positive number and adding one, the result is the complement of a negative number. Negative numbers are stored in memory in the form of complements. When the complement is converted to the original code, it is the positive number. The corresponding negative number after conversion

After inverting the negative number and adding one, we get a complement code, but the original code of the positive number's complement is the same

Note: Inverting and inverting the code are two different things This is a concept. The two's complement form is involved in the operation because there are negative numbers involved.

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