Parse error: syntax error, unexpected $end in script.php on line xx
调试了一会后发现产生错误的行是文件中间某行
//$str .= "?>\n";
想起来了 PHP 解释器允许的结尾标记那行还可以用单行注释,即 //$str .= "?>\n"; 被解释成结尾标记前有注释,注释的内容是 //$str .= ",而 ?> 后面的 \n"; 会被解释作 PHP 块外的内容按 HTML 输出出去!结果是给 $str .= "?>\n"; 这行添加 // 成注释后,反而多了个 ?> 的结束标记,造成原来真正的结束标记成了意料之外的(unexpected)了。
解决办法就是直接删掉这一行即可。
PHP 开始和结束标记所在行别写其它东西,是个好习惯。

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