Question

我使用了以下一点代码来查找页面上的所有链接（home.php）并将它们作为URL回显。它工作正常，但如何将结果传递给新变量？如果我创建一个新变量：

$myvariable ="$element->href";

这只是许多人的最后结果。

// Create DOM from URL or file
$html = file_get_html('http://www.somewebsite.xxx/include/home.php');

foreach($html->find('a') as $element)
       echo $element->href . '<br>';

Answer 1

使用array：

// Create DOM from URL or file
$html = file_get_html('http://www.somewebsite.xxx/include/home.php');

$urls = array();

foreach($html->find('a') as $element) {
    $urls[] = $element->href;
}

print_r($urls);

Answer 2

与String Operator：

连接

$myvar = '';
foreach($html->find('a') as $element) {
       $myvar .= $element->href . '<br>';
}

或使用Array：

foreach($html->find('a') as $element) {
       $myvar[] = $element->href; // removed <br> for implode, you can add it back
}
// if you want the array as one string
$myvar = implode('<br>', $myvar);

Answer 3

您可以使用数组来保存该问题页面中所有链接的值。在End中，Array是您要查找的变量。方法如下：

    <?php
        //USE THE HTML DOM PARSER TO PARSE ALL THE HTML DATA ON THE PAGE: $page
        $page   = 'http://www.somewebsite.xxx/include/home.php';
        $html   = file_get_html($page);


        // LOOPING THROUGH THE DOM ELEMENTS SELECT ONLY THE <a> TAGS 
        // AND BUNDLE THEM INTO AN ARRAY...
        // THE ARRAY NOW FORMS THE VARIABLE YOU HAD EXPECTED TO CREATE..
        $arrAnchors     = array();  // INITIALIZE $arrAnchors TO AN EMPTY ARRAY...
        foreach($html->find('a') as $element) {
            // PUSH ALL THE ANCHOR'S HREF ATTRIBUTES (URLs) INTO THE $arrAnchors ARRAY
            $arrAnchors[]   = $element->href . '<br>';
        }

        // NOW TRY TO DUMP THE CONTENT OF YOUR $arrAnchors....
        var_dump($arrAnchors);  // DISPLAYS A NUMERICALLY INDEXED ARRAY OF LINKS ON THE PAGE: $page

将foreach循环中的所有结果传递给新变量

3 个答案: