is_resource
is_string
Variable handling Функции
PHP Manual

# is_scalar

(PHP 4 >= 4.0.5, PHP 5)

is_scalar — Finds whether a variable is a scalar

### Описание

bool is_scalar ( mixed `$var` )

Finds whether the given variable is a scalar.

Scalar variables are those containing an integer, float, string or boolean. Types array, object and resource are not scalar.

> Замечание: is_scalar() does not consider resource type values to be scalar as resources are abstract datatypes which are currently based on integers. This implementation detail should not be relied upon, as it may change.

### Список параметров

`var`

  The variable being evaluated.

### Возвращаемые значения

Returns `TRUE` if `var` is a scalar `FALSE` otherwise.

### Примеры

Пример #1 is_scalar() example

`<?php
function show_var($var)
{
if (is_scalar($var)) {
echo $var;
} else {
var_dump($var);
}
}
$pi = 3.1416;
$proteins = array("hemoglobin", "cytochrome c oxidase", "ferredoxin");
show_var($pi);
show_var($proteins)
?>`

Результат выполнения данного примера:

    3.1416
    array(3) {
      [0]=>
      string(10) "hemoglobin"
      [1]=>
      string(20) "cytochrome c oxidase"
      [2]=>
      string(10) "ferredoxin"
    }

### Смотрите также

- is_float()
- is_int()
- is_numeric()
- is_real()
- is_string()
- is_bool()
- is_object()
- is_array()

is_resource
is_string
Variable handling Функции
PHP Manual