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What is the difference between client-side and server-side programming?（3个答案）
5天前关闭。
你好，我在我的“Functions.php”页面上有一个函数：

function displaySearchedGame($game) {
    if (empty($game)) {
        echo '<p>No games found.</p>';
        return;
    }
    echo '<ul class="searchedGamesList">';
    foreach ($game as $game) {
        echo '<li class="searchedGame">';
        
        // Display the cover image if URL is defined
        if ($game['cover_url']) {
            echo '<img src="' . $game['cover_url'] . '" alt="Game Cover">';
        }

        echo '<div class="game-details">';
        echo '<h3>' . $game['game_name'] . '</h3>';
        echo '<p>Platform: ' . ($game['platform_name'] ?? 'Unknown Platform') . '</p>';
        echo '</div>';

        echo '</li>';
    }
    echo '</ul>';
}

我试着在dashboard.php上的JavaScript的click函数中调用它：

document.addEventListener('DOMContentLoaded', function () {
        document.getElementById('searchButton').addEventListener('click', function () {
            var searchTerm =document.getElementById('search').value;

            var xhr = new XMLHttpRequest();
            xhr.open('POST', 'Functions.php', true);
            xhr.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
            xhr.onreadystatechange =function () {
                if (xhr.readyState == 4 && xhr.status == 200) {
                    var response = JSON.parse(xhr.responseText);
                    displaySearchedGame(response);
                }
            };
            xhr.send('action=searchGame&searchTerm=' + encodeURIComponent(searchTerm));
        });
    });

我的Functions.php没有识别出我在JavaScript中调用了DisplaySearchedGame（），并且我一直得到错误“DisplaySearchedGame”not defined。
我尝试了许多不同的方法来调用函数。我甚至试着在dashboard.php上从我的php调用它，但它只返回“null”。我想让它做的是使用searchGame（）来搜索游戏：

function searchGame($searchTerm) {
    // Prepare the URL for the AJAX request
    $url = "search_game.php?searchTerm=" . urlencode($searchTerm);

    // Initialize cURL session
    $ch = curl_init();

    // Set the cURL options
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_HEADER, false);

    // Execute the cURL request and get the response
    $response = curl_exec($ch);

    // Check for errors and close the cURL session
    if ($response === false) {
        $error = curl_error($ch);
        curl_close($ch);
        return "Error: " . $error;
    }

    // Close the cURL session
    curl_close($ch);

    // Return the response
    return $response;
}

并归还了搜索的游戏。我希望函数在functions.php上，这样我就可以从另一个页面使用/调用它们。