Complete Proxy Checker with PHP Backend

Complete Proxy Checker with PHP Backend

1. HTML Form (Updated to Submit to PHP)

Replace the <form> in the template to point to a PHP script (check_proxy.php).

html
<form id="proxyCheckerForm" method="POST" action="check_proxy.php">
    <label for="proxyAddress">Proxy Address</label>
    <input type="text" id="proxyAddress" name="proxyAddress" placeholder="e.g., 192.168.1.1" required>

    <label for="proxyPort">Proxy Port</label>
    <input type="number" id="proxyPort" name="proxyPort" placeholder="e.g., 8080" required>

    <button type="submit">Check Proxy</button>
</form>

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2. PHP Script (check_proxy.php)

This script receives the proxy details, validates them, and checks the proxy by attempting a connection.

php
<?php
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $proxyAddress = filter_input(INPUT_POST, 'proxyAddress', FILTER_VALIDATE_IP);
    $proxyPort = filter_input(INPUT_POST, 'proxyPort', FILTER_VALIDATE_INT, [
        'options' => ['min_range' => 1, 'max_range' => 65535]
    ]);

    if (!$proxyAddress || !$proxyPort) {
        echo json_encode([
            'success' => false,
            'message' => 'Invalid proxy address or port.'
        ]);
        exit;
    }

    // Function to check proxy
    function checkProxy($address, $port)
    {
        $timeout = 5; // Timeout in seconds
        $connection = @fsockopen($address, $port, $errno, $errstr, $timeout);

        if ($connection) {
            fclose($connection);
            return true; // Proxy is working
        }
        return false; // Proxy failed
    }

    // Check the proxy
    $isProxyValid = checkProxy($proxyAddress, $proxyPort);

    // Return the result
    if ($isProxyValid) {
        echo json_encode([
            'success' => true,
            'message' => "Proxy $proxyAddress:$proxyPort is valid."
        ]);
    } else {
        echo json_encode([
            'success' => false,
            'message' => "Proxy $proxyAddress:$proxyPort is invalid."
        ]);
    }
} else {
    echo json_encode([
        'success' => false,
        'message' => 'Invalid request method.'
    ]);
}
?>

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3. AJAX Integration (Optional)

If you prefer not to reload the page, you can use AJAX to handle the form submission and display the response.

javascript
const form = document.getElementById("proxyCheckerForm");
const resultDiv = document.getElementById("result");

form.addEventListener("submit", async function (event) {
    event.preventDefault();

    const formData = new FormData(form);
    const response = await fetch("check_proxy.php", {
        method: "POST",
        body: formData,
    });
    const result = await response.json();

    resultDiv.style.display = "block";
    resultDiv.textContent = result.message;
    resultDiv.style.color = result.success ? "green" : "red";
});

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How It Works:

1. HTML Form: User inputs proxy details (IP and port).
2. Backend (PHP):
   • Validates the inputs (IP and port).
   • Attempts to connect to the proxy using fsockopen().
   • Returns a JSON response with the result.
3. Frontend (Optional AJAX): Displays the result dynamically without reloading.

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This implementation allows for real-time or page-reload proxy validation. Let me know if you'd like more customization!