PHP is_integer() Function
Last Updated :
22 Jul, 2022
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
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