Find whether the type of a variable is integer

Opis

bool is_int ( mixed $var )

Finds whether the type of the given variable is integer.

Informacja:
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().

Parametry

var: The variable being evaluated.

Zwracane wartości

Returns TRUE if var is an integer, FALSE otherwise.

Przykłady

Przykład #1 is_int() example


<?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));
?>

Powyższy przykład wyświetli:

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

Zobacz też:

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