PHP - Function sizeof()


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Syntax

sizeof($array, $mode );

Definition and Usage

Count elements in an array, or properties in an object.

If the optional mode parameter is set to COUNT_RECURSIVE (or 1), sizeof() will recursively count the array. This is particularly useful for counting all the elements of a multidimensional array. The default value for mode is 0. sizeof() does not detect infinite recursion.

Parameters

Sr.No Parameter & Description
1

array

Required. Specifies an array

2

mode

Optional. Specifies the mode of the function.

Return Value

Returns the number of elements in an array.

Example

Try out following example −

<?php
   $a[0] = 1;
   $a[1] = 3;
   $a[2] = 5;
   $result = sizeof($a);
   
   print($result);
?> 

This will produce the following result −

3

php_function_reference.htm

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