使用PHP脚本在服务器上创建PHP文件时出错

我正在尝试制作一个PHP脚本，用于在我的服务器上创建PHP文件，但出现以下错误：

解析错误：语法错误，第3行的/home/judiesst/public\u html/77/create.php中出现意外的T_字符串

下面是在服务器上创建php文件的PHPScipt

<?php
$filename = 'test.php';
$somecontent = "<?php $jdst_xx = "HELLO"; ?>\n";

// Let's make sure the file exists and is writable first.
if (is_writable($filename)) {

    // In our example we're opening $filename in append mode.
    // The file pointer is at the bottom of the file hence
    // that's where $somecontent will go when we fwrite() it.
    if (!$handle = fopen($filename, 'a')) {
         echo "Cannot open file ($filename)";
         exit;
    }

    // Write $somecontent to our opened file.
    if (fwrite($handle, $somecontent) === FALSE) {
        echo "Cannot write to file ($filename)";
        exit;
    }

    echo "Success, wrote ($somecontent) to file ($filename)";

    fclose($handle);

} else {
    echo "The file $filename is not writable";
}
?>

更改

$somecontent = "<?php $jdst_xx = "HELLO"; ?>\n";

$somecontent=“\n”；

到

$somecontent=“\n”；
每当双引号内有双引号时，您需要将其转义或用单引号替换

所以你可以用这样的东西

$somecontent = "<?php $jdst_xx = \"HELLO\"; ?>\n";

$somecontent=“\n”；

或

$somecontent=“\n”；
谢谢，如何让这个脚本重写输出文件中的内容，现在只需将新内容与以前的内容（在相同的文件中）合并即可
$somecontent = "<?php $jdst_xx = \"HELLO\"; ?>\n";

$somecontent = "<?php $jdst_xx = 'HELLO'; ?>\n";