PHP Integer

PHP Integer

An integer is a whole number (without decimals).  It is a number between -2,147,483,648 and +2,147,483,647.

Rules for integers:

• An integer must have at least one digit (0-9)
• An integer cannot contain comma or blanks
• An integer must not have a decimal point
• An integer can be either positive or negative
• Integers can be specified in three formats: decimal (10-based), hexadecimal (16-based - prefixed with 0x) or octal (8-based - prefixed with 0)

In the following example $x is an integer. The PHP var_dump() function returns the data type and value:

Example

<?php
$x = 5985;
var_dump($x);
?>