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Closed 10 years ago.

从此简单Dom网站

if(isset($html-> div#sidebar )) 
{
    $sidebarFile =  D:xampphtdocsfinalwordpresssidebar.php ;
    $openSidebarFile = fopen($sidebarFile, a );
    foreach($html->find( div#sidebar )) as $e)
    {
        $html ->find( div[id=sidebar] , 0) -> innertext;
        $inputSidebar = $e->outertext;
        fwrite($openSidebarFile, "
" .inputSidebar "
");
    }
}

From the documentation: it says:

// Determine whether a attribute exist? 
if(isset($e->href)) 
        echo  href exist! ;

Answer 1

这里有几个问题，我将直接更正：

if($html->find( div#sidebar )) 
{
    $sidebarFile =  D:xampphtdocsfinalwordpresssidebar.php ;
    $openSidebarFile = fopen($sidebarFile, a );
    foreach($html->find( div#sidebar ) as $e)
    {
        $html ->find( div[id=sidebar] , 0) -> innertext;
        $inputSidebar = $e->outertext;
        fwrite($openSidebarFile, "
" .inputSidebar "
");
    }
}

现在，发生了什么变化？第一个if和foreach。if使用了错误的函数，并且错误地检查了是否为空。foreach的（）大括号不匹配。

Answer 2

是$html->；div#边栏你真的想要什么？在哪里找到？

此外，您只能将isset与变量（或类似的事情，如数组访问）一起使用，而不能使用函数返回值。请改用空。

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