PHP is_integer() Function
Last Updated :
22 Jul, 2022
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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
$arr = array(5, 10.5, null, true, "GFG");
foreach ($arr as $val) {
var_dump(is_integer($val));
}
?>
<?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
$arr = array(
15,
10 => "Geeks",
30.25,
"GeeksforGeeks",
'',
true,
50
);
foreach ($arr as $val) {
var_dump(is_integer($val));
}
?>
<?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
