php array length

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PHP sizeof() Function

Example

Return the number of elements in an array:

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

Definition and Usage

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

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


Syntax

sizeof(array,mode);

 

Parameter Description
array Required. Specifies the array
mode Optional. 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)

Technical Details

Return Value: Returns the number of elements in the array
PHP Version: 4+

More Examples

Example 1

Count the array recursively:

<?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);
?>
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