PHP Reference
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Quick Reference

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

<?php
$my_cars = array('Lamborghini', 'Ferrari', 'Maserati');
echo sizeof($my_cars);
?>

Note

Arrays count starting from zero NOT one. So item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on.

Output

3

Syntax

sizeof(array, mode)

Parameters

ParameterDescription
arraySpecifies an array (required)
modeSpecifies the mode:

  • 0 - Does not count all elements of multidimensional arrays (default)

  • 1 - Counts the array recursively (counts all the elements of multidimensional arrays)

PHP Notes:

  • When using PHP, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
  • Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on
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