how to find length of var in php code example

Example 1: how to check php string length

<?php
$name = 'abcdef';
echo strlen($str); // 6

$string = ' ab cd ';
echo strlen($str); // 7
?>

Example 2: string length php

<?php
$str = 'php';
echo strlen($str); // 3

$str = 's p a c e';
echo strlen($str); // 9
?>