PHP sizeof() Function

6 Jan 2025 | 1 min read

The sizeof( ) function is an alias of count( ) function. The sizeof( ) function returns the number of elements in an array. This function was introduced in PHP 4.0.

Syntax

Parameter

Parameter	Description	Is compulsory
array	Specifies the array to use.	compulsory
mode	Specifies the mode. Possible values: 0 - Default. Does not count all elements of multidimensional arrays 1 - Counts the array recursively (counts all the elements of multidimensional arrays)	Optional

Returns

The sizeof( ) function returns the number of elements in the array.

Example 1

Output:

Example 2

Output:

Example 3

Output:

Example 4

Output:

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PHP sizeof() Function

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Example 1

Example 2

Example 3

Example 4

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