php在iframe上单击并将源代码加载到另一个iframe中

<iframe id="sourceFrame" src="source.html"></iframe>
<iframe id="targetFrame" src=""></iframe>

<?php
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $sourceCode = $_POST['sourceCode'];
    // 处理源代码，如保存到文件或数据库中
}
?>

<script>
    document.getElementById('sourceFrame').contentWindow.document.addEventListener('click', function(event) {
        var sourceCode = event.target.outerHTML;
        // 将源代码发送到服务器端
        var xhr = new XMLHttpRequest();
        xhr.open('POST', 'process.php', true);
        xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
        xhr.send('sourceCode=' + encodeURIComponent(sourceCode));
    });
</script>

<?php
$sourceCode = $_POST['sourceCode'];
// 处理源代码，如保存到文件或数据库中

// 将源代码加载到targetFrame中
echo '<script>
    var targetFrame = parent.document.getElementById("targetFrame");
    targetFrame.contentWindow.document.open();
    targetFrame.contentWindow.document.write(' . json_encode($sourceCode) . ');
    targetFrame.contentWindow.document.close();
</script>';
?>