PHP Reference – is_int() function

(PHP 4, PHP 5)

is_int — Find whether the type of a variable is integer

bool is_int( $var )

Parameters

$var

The variable being evaluated.

Note:
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().

Return Values

Returns TRUE if var is an integer, FALSE otherwise.

<?php
if (is_int(23)) {
    echo "is integer\n";
} else {
    echo "is not an integer\n";
}
var_dump(is_int(23));
var_dump(is_int("23"));
var_dump(is_int(23.5));
var_dump(is_int(true));
?>

The above example will output:

is integer
bool(true)
bool(false)
bool(false)
bool(false)

See Also:

is_float() – Finds whether the type of a variable is float
is_bool() – Finds out whether a variable is a boolean
is_float() – Finds whether the type of a variable is float
is_numeric() – Finds whether a variable is a number or a numeric string
is_string() – Find whether the type of a variable is string
is_array() – Finds whether a variable is an array
is_object() – Finds whether a variable is an object

To see more:
http://php.net/manual/en/function.is-int.php

Leave a Reply

Your email address will not be published. Required fields are marked *

*