How to get the length of an array (number of elements) in php

$users = array ("qdv.cn", "haotu.net", "sharejs.com", "google.com");
print count($users)-1;

Example 2, usage of php function count to get the length of an array.

Example 2, the count function is used to obtain the length of the array

$array = array("PHP", "Perl", "Java");
print_r("Size 1: ".count($array)."n");
 $array = array();
print_r("Size 2: ".count($array)."n");
?>

Output result: Size 1: 3 Size 2: 0