PHP is_integer() Function Last Updated : 22 Jul, 2022 Comments Improve Suggest changes Like Article Like Report The is_integer() function is an inbuilt function in PHP that is used to check whether the type of a variable is an integer or not. This function is an alias of is_int() function. Syntax: bool is_integer(mixed $value) Parameters: This function accepts a single parameter $value that holds the value which needs to check for integer. Return Value: This function returns true if the value is an integer, and false otherwise. Example 1: PHP <?php $arr = array(5, 10.5, null, true, "GFG"); foreach ($arr as $val) { var_dump(is_integer($val)); } ?> Output: bool(true) bool(false) bool(false) bool(false) bool(false) Example 2: PHP <?php $arr = array( 15, 10 => "Geeks", 30.25, "GeeksforGeeks", '', true, 50 ); foreach ($arr as $val) { var_dump(is_integer($val)); } ?> Output: bool(true) bool(false) bool(false) bool(false) bool(false) bool(false) bool(true) Reference: https://www.php.net/manual/en/function.is-integer.php Comment V vkash8574 Follow Improve V vkash8574 Follow Improve Article Tags : Web Technologies PHP PHP-function Explore PHP Tutorial 8 min read BasicsPHP Syntax 4 min read PHP Variables 5 min read PHP | Functions 8 min read PHP Loops 4 min read ArrayPHP Arrays 5 min read PHP Associative Arrays 4 min read Multidimensional arrays in PHP 5 min read Sorting Arrays in PHP 4 min read OOPs & InterfacesPHP Classes 2 min read PHP | Constructors and Destructors 5 min read PHP Access Modifiers 4 min read Multiple Inheritance in PHP 4 min read MySQL DatabasePHP | MySQL Database Introduction 4 min read PHP Database connection 2 min read PHP | MySQL ( Creating Database ) 3 min read PHP | MySQL ( Creating Table ) 3 min read PHP AdvancePHP Superglobals 6 min read PHP | Regular Expressions 12 min read PHP Form Handling 4 min read PHP File Handling 4 min read PHP | Uploading File 3 min read PHP Cookies 9 min read PHP | Sessions 7 min read Like