## Example

`

     int count ( mixed $var [, int $mode = COUNT_NORMAL ] )

`

## Description

Counts all elements in an array, or something in an object. For objects, if you have SPL installed, you can hook into count() by implementing interface Countable. The interface has exactly one method, Countable::count(), which returns the return value for the count() function. Please see the Array section of the manual for a detailed explanation of how arrays are implemented and used in PHP.

## Return Values

Returns the number of elements in var. If var is not an array or an object with implemented Countable interface, 1 will be returned. There is one exception, if var is NULL, 0 will be returned. Caution count() may return 0 for a variable that isn't set, but it may also return 0 for a variable that has been initialized with an empty array. Use isset() to test if a variable is set.