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About PHP

PHP is a general-purpose scripting language especially suited to web development.

About Lua

Lua is a lightweight, high-level programming language designed for embedded use in applications.

Palindrome Check Example: PHP vs Lua

Palindrome Check in PHP

<?php
function isPalindrome($str) {
    $clean = preg_replace("/[^a-zA-Z0-9]/", "", strtolower($str));
    return $clean === strrev($clean);
}

// Example usage
echo isPalindrome("A man, a plan, a canal: Panama") ? "true" : "false"; // true
echo "\n";
echo isPalindrome("race a car") ? "true" : "false"; // false
?>

Palindrome Check in Lua

function isPalindrome(str)
    local clean = string.lower(string.gsub(str, "[^%w]", ""))
    return clean == string.reverse(clean)
end

-- Example usage
print(isPalindrome("A man, a plan, a canal: Panama")) -- true
print(isPalindrome("race a car")) -- false

Bubble Sort Example: PHP vs Lua

Bubble Sort in PHP

<?php
function bubbleSort($arr) {
    $n = count($arr);
    for ($i = 0; $i < $n; $i++) {
        for ($j = 0; $j < $n - $i - 1; $j++) {
            if ($arr[$j] > $arr[$j + 1]) {
                $temp = $arr[$j];
                $arr[$j] = $arr[$j + 1];
                $arr[$j + 1] = $temp;
            }
        }
    }
    return $arr;
}

$arr = array(64, 34, 25, 12, 22, 11, 90);
print_r(bubbleSort($arr));
?>

Bubble Sort in Lua

function bubbleSort(arr)
    local n = #arr
    for i = 1, n do
        for j = 1, n - i do
            if arr[j] > arr[j + 1] then
                arr[j], arr[j + 1] = arr[j + 1], arr[j]
            end
        end
    end
    return arr
end

local arr = {64, 34, 25, 12, 22, 11, 90}
local sorted = bubbleSort(arr)
print(table.concat(sorted, " "))