How to use php sizeof function

php The sizeof function is used to return the number of elements in the array. The sizeof() function is an alias of the count() function. Its syntax is sizeof(array, mode). The parameter array is required and refers to the array to be counted.

#php How to use the sizeof function?

Definition and usage

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

The sizeof() function is an alias of the count() function.

Syntax

sizeof(array,mode);

Parameters

array Required. Specifies the array to count.

mode Optional. Specifies the mode of the function. Possible values:

0 - Default. Not counting all elements in a multidimensional array.

1 - Recursively count the number of elements in an array (count all elements in a multidimensional array).

Return value: Returns the number of elements in the array.

PHP Version: 4

Example 1

Recursively count the number of elements in an array:

<?php
$cars=array
(
"Volvo"=>array
(
"XC60",
"XC90"
),
"BMW"=>array
(
"X3",
"X5"
),
"Toyota"=>array
(
"Highlander"
)
); 
echo "Normal count: " . sizeof($cars)."<br>";
echo "Recursive count: " . sizeof($cars,1);
?>

Output:

Normal count: 3
Recursive count: 8

Example 2

Return the number of elements in the array:

<?php
$cars=array("Volvo","BMW","Toyota");
echo sizeof($cars);
?>

Output:

3

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