PHP mb_convert_kana() Function

<?php
  
// Input string
$input = "Hello, world!";

// Convert to full-width form
$converted = mb_convert_kana($input, "A", "UTF-8");

// Output the converted string
echo $converted;
?>

<?php
  
// Input string
$input = "12345";
$convertToFullWidth = true;

// Conditionally convert the string to full-width form
if ($convertToFullWidth) {
    $converted = mb_convert_kana($input, "N", "UTF-8");
} else {
    $converted = $input;
}

// Output the converted string
echo $converted;
?>

<?php
  
// Input array of strings
$strings = 
  ["Hello, world!", 
   "こんにちは、世界！",
   "12345", 
   "Geeks for Geeks"];
$convertToFullWidth = true;

// Loop through the array and 
// conditionally convert the strings
foreach ($strings as $string) {
    if ($convertToFullWidth) {
        $converted = mb_convert_kana($string, "A", "UTF-8");
    } else {
        $converted = $string;
    }

    // Output the converted string
    echo $converted . "\n";
}
?>