PHP: sizeof() function
PHP: Count all elements in an array
The sizeof() function is used to count the elements of an array or the properties of an object. This function is an alias of count().
Version:
(PHP 4 and above)
Syntax:
sizeof(array_name, mode)
Parameters:
Name | Description | Required / Optional |
Type |
---|---|---|---|
array_name | Specifies the array or object to count. | Required | Array |
mode | Sets the mode of the function. Possible values : COUNT_RECURSIVE (or 1) Here the count() function counts the array recursively. This is useful for counting all the elements of a multidimensional array. The default value is 0. |
Optional | Integer |
Return value:
The number of elements in array_name.
Value Type: Array.
Example:
<?php
$a[0] = 'Language';
$a[1] = 'English';
$a[2] = 'Math';
$a[3] = 'Science';
$result = sizeof($a);
echo $result;
?>
Output:
4
Pictorial Presentation:

View the example in the browser
Practice here online :
See also
PHP: Tips of the Day
Filters the collection using the given callback
Example:
<?php function tips_reject($items, $func) { return array_values(array_diff($items, array_filter($items, $func))); } print_r(tips_reject(['Apple', 'Pear', 'Kiwi', 'Banana'], function ($item) { return strlen($item) > 4; })); ?>
Output:
Array ( [0] => Pear [1] => Kiwi )
- Weekly Trends
- Java Basic Programming Exercises
- SQL Subqueries
- Adventureworks Database Exercises
- C# Sharp Basic Exercises
- SQL COUNT() with distinct
- JavaScript String Exercises
- JavaScript HTML Form Validation
- Java Collection Exercises
- SQL COUNT() function
- SQL Inner Join
- JavaScript functions Exercises
- Python Tutorial
- Python Array Exercises
- SQL Cross Join
- C# Sharp Array Exercises