count() Method
The count() method is used to calculate all the elements in the array or any other countable object. It can be used for both uni-dimensional as well as multi-dimensional arrays.
Syntax
count(arr, mode);
Parameters
This method accepts two parameters that are discussed below:
- arr – The array to count the elements.
- mode – Indicator to check whether or not to count all the elements –
- 0 – Default. Does not count all elements of multidimensional arrays
- 1 – Counts the array recursively (counts all the elements of multidimensional arrays).
Example: This example describes the basic usage of the count() Method in PHP.
PHP
<?php$arr = array( "Java" => array( "SpringBoot", "Eclipse" ) , "Python" => array( "Django" ) , "PHP" => array( "CodeIgniter" ));print_r($arr);print ("<br>");echo "Sub elements of an array: " . count($arr) . "<br>";echo "All elements of an array: " . count($arr, 1);?> |
Output
Array (
[Java] => Array (
[0] => SpringBoot
[1] => Eclipse
)
[Python] => Array (
[0] => Django
)
[PHP] => Array (
[0] => CodeIgniter
)
)
Sub elements of an array: 3
All elements of an array: 7
What is the difference between count() and sizeof() functions in PHP ?
The collection objects in PHP are characterized by a length parameter to indicate the number of elements contained within it. It is necessary to estimate the length of an array in order to perform array manipulations and modifications.