is_resource
is_string
Variable handling Funkcje
PHP Manual

# is_scalar

(PHP 4 >= 4.0.5, PHP 5)

is_scalar — Finds whether a variable is a scalar

### Opis

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.

> Informacja: 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.

### Parametry

`var`

  The variable being evaluated.

### Zwracane wartości

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

### Przykłady

Example #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)
?>`

Powyższy przykład wyświetli:

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

### Patrz także

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

is_resource
is_string
Variable handling Funkcje
PHP Manual