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PHP Functions Online


is_int

(PHP 4, PHP 5)

is_intFind whether the type of a variable is integer

bool is_int(mixed $var)

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Preview #

${{ variable.param.name }} = {{ variable.param|getValue:variable.form:true }};
{{ call.result}} = ;

Description #

bool is_int ( mixed $var )

Finds whether the type of the given variable is integer.

To test if a variable is a number or a numeric string (such as form input, which is always a string), you must use is_numeric().

Parameters #

var

The variable being evaluated.

Return Values #

Returns TRUE if var is an integer, FALSE otherwise.

Examples #

Example #1 is_int() example

<?php
$values 
= array(23"23"23.5"23.5"nulltruefalse);
foreach (
$values as $value) {
    echo 
"is_int(";
    
var_export($value);
    echo 
") = ";
    
var_dump(is_int($value));
}
?>

The above example will output:

is_int(23) = bool(true)
is_int('23') = bool(false)
is_int(23.5) = bool(false)
is_int('23.5') = bool(false)
is_int(NULL) = bool(false)
is_int(true) = bool(false)
is_int(false) = bool(false)

See Also #