HexaHost-Web-Prod/scripts/test-email.php

<?php
/**
 * HexaHost.de E-Mail Test (nur CLI oder lokale Entwicklung)
 */

if (PHP_SAPI !== 'cli') {
    $remoteAddr = $_SERVER['REMOTE_ADDR'] ?? '';
    $isLocal = in_array($remoteAddr, ['127.0.0.1', '::1'], true)
        || filter_var($remoteAddr, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) === false;

    if (!$isLocal) {
        http_response_code(403);
        exit('Forbidden');
    }
}

require_once __DIR__ . '/../backend/config/mail-config.php';

function testEmail() {
    $config = getHexaHostConfig();

    $subject = '[HexaHost.de] Test-E-Mail';
    $message = "Test-E-Mail von HexaHost.de\n\n";
    $message .= "Zeitstempel: " . date('d.m.Y H:i:s') . "\n";

    $headers = [
        'From: ' . $config['from_name'] . ' <' . $config['from_email'] . '>',
        'MIME-Version: 1.0',
        'Content-Type: text/plain; charset=UTF-8',
        'X-Mailer: HexaHost Test Email',
    ];

    return mail($config['to_email'], $subject, $message, implode("\r\n", $headers));
}

if (PHP_SAPI === 'cli') {
    echo testEmail() ? "Test-E-Mail gesendet.\n" : "Fehler beim Senden.\n";
    exit;
}

if (isset($_GET['test'])) {
    echo testEmail()
        ? 'Test-E-Mail wurde gesendet.'
        : 'Fehler beim Senden der Test-E-Mail.';
} else {
    echo '<h1>HexaHost.de E-Mail Test</h1>';
    echo '<p><a href="?test=1">Test-E-Mail senden</a></p>';
}