PHP

how to count string characters in php

<?php
$str1 = 'Hello world!';
echo strlen($str1); // Outputs: 12

count_chars (PHP 4, PHP 5, PHP 7, PHP 8) count_chars — Return information about characters used in a string

<?php
$data = "Two Ts and one F.";

foreach (count_chars($data, 1) as $i => $val) {
   echo "There were $val instance(s) of "" , chr($i) , "" in the string.
";
}
?>