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len() Example: >>> len([1,2,3]) 3 count(PHP 4, PHP 5) count — Count all elements in an array, or properties in an object DescriptionCounts all elements in an array, or properties 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, 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. Parameters
Return ValuesReturns the number of elements in var , which is typically an array, since anything else will have one element. 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. Changelog
Examples
Example #1 count() example
<?php
Example #2 Recursive count() example
<?php
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