How to repeat a string to a specific number of times in PHP ?

<?php

// Declaring string variable 
$str = "Hi!GFG User.";
echo("Original string : ");
echo($str . "</br>");

// Declaring number of times 
$n = 3;

// Declaring empty string
$final_str = "";

// Looping over n times
for($i = 0; $i < $n; $i++) {

      // Appending str to final string value
    $final_str .= $str;
}
echo("Final string : ");
echo($final_str . "</br>");

?>

<?php
  
// Declaring string variable 
$str = "Hi!GFG User.";
echo("Original string : ");
echo($str."</br>");

// Declaring number of times 
$n = 3;

// Computing final string
$final_str = str_repeat($str, $n);
echo("Final string : ");
echo($final_str . "</br>");

?>

<?php 

// Function to repeat string using recursion
function repeatString($str, $n) {
    // Base case: if n is 0, return an empty string
    if ($n == 0) {
        return "";
    }
    // Recursive case: concatenate the string with the result of the function called with n-1
    return $str . repeatString($str, $n - 1);
}

// Declaring string variable
$str = "Hi!GFG User.\n";
echo("Original string : ");
echo($str . "\n");

// Declaring number of times
$n = 3;

// Computing final string using recursion
$final_str = repeatString($str, $n);
echo("Final string : ");
echo($final_str . "\n");

?>

<?php

// Declaring string variable 
$str = "Hi!GFG User.";
echo "Original string : " . $str . "\n";

// Declaring number of times 
$n = 3;

// Using array_fill to create an array with $str repeated $n times
$array = array_fill(0, $n, $str);

// Using implode to concatenate the array elements into a single string
$final_str = implode('', $array);

echo "Final string : " . $final_str . "\n";

?>