Długość tablicy PHP
<?php
$arr = ["one", "two", "three", "four"];
echo count($arr);
?>
SISO
<?php
$arr = ["one", "two", "three", "four"];
echo count($arr);
?>// using count() we can get proper length of the array
$names = array("Ankur","Raj","Ram","Suresh");
// pass array into count() as parameter it will return array length
echo count($names);
// output : 4