The **`is_array`** method is a built-in function in PHP used to check whether a variable is an array. 

# 
## Syntax

```php
is_array(mixed $variable_to_test): bool
``` 
## Parameter
The function takes in one parameter, `variable_to_test`.

## Return value
The `is_array` method returns `true` if the passed argument is an array; otherwise, it returns `false`. 

## Code 

<?
$arr=array('A', 'B', 'C');
print_r($arr);
echo is_array($arr) ? ' is an Array' : ' is not an Array';


echo "\n\n-----------\n";
$arr = array('odd' => array(3, 5), 'even' => array(2, 4, 6));
print_r($arr);
echo is_array($arr) ? ' is an Array' : ' is not an Array';

echo "\n\n-----------\n";
$num = 67.099;
print($num);
echo is_array($num) ? ' is an Array' : ' is not an Array';

echo "\n\n-----------\n";
$str= "hello";
print($str);
echo is_array($str) ? ' is an Array' : ' is not an Array';
?>

In the code above, we call the `is_array` method on `$arr`.

```
$arr=array('A', 'B', 'C');
is_array($arr)
```

For the variable `$arr`, the `is_array` method returns `true` because `$arr` is an array.

---

```
$arr = array(
              'odd' => array(3,5), 
              'even' => array(2,4,6)
            );
is_array($arr);
```
For the value  of `$arr` above, the `is_array` method returns `true` because `$arr` is a multidimensional array.

---
```
$num = 67.099;
is_array($num);
```
For the above value of `$num`, the `is_array` method returns `false` because `$num` is not an array.

---
```
$str= "hello";
is_array($str);
```
For the value of `$num`, the `is_array` method returns `false` because `$num` is a string, not an array.


In the code above, we call the `is_array` method on `＄arr`.

```
$arr=array('A', 'B', 'C');
is_array($arr)
```

For the variable `＄arr`, the `is_array` method returns `true` because `＄arr` is an array.

---

```
$arr = array(
              'odd' => array(3,5), 
              'even' => array(2,4,6)
            );
is_array($arr);
```
For the value  of `＄arr` above, the `is_array` method returns `true` because `＄arr` is a multidimensional array.

---
```
$num = 67.099;
is_array($num);
```
For the above value of `＄num`, the `is_array` method returns `false` because `＄num` is not an array.

---
```
$str= "hello";
is_array($str);
```
For the value of `＄num`, the `is_array` method returns `false` because `＄num` is a string, not an array.


What is the is_array method in PHP?

Syntax

Parameter

Return value

Code