如何在类中获取文本的json数组？ [重复]

Question

This question already has an answer here:

• How can I match on an attribute that contains a certain string? 9 answers

The html snippet in a url (www.foo.com/index.html):

...
<th class="name" align="left" scope="col">
<a class="foo" href="foo.html">foo</a>
</th>
...
<th class="name" align="left" scope="col">
<a class="bar" href="bar.html">bar</a>
</th>
...
<th class="name" align="left" scope="col">
<a class="ba" href="baz.html">baz</a>
</th>
......

I would like to get, through php all the text inside the class .name and convert it to JSON

So that it ends up like:

{"names":["foo","bar","baz"]}

---

This is what I have tried:

function linkExtractor($html){
    $nameArr = array();
    $doc = new DOMDocument();
    $doc->loadHTML($html);
    $names = //how do i get the elements?
    foreach($names as $name) {
        array_push($nameArr, $name);
    }
    return $imageArr;
}

echo json_encode(array("names" => linkExtractor($html)));

</div>

Answer 1

try this ...

$html = "http://www.foo.com/index.html"; //is this right?
function linkExtractor($html, $classname){
    $nameArr = array();
    $doc = new DOMDocument();
    $doc->loadHTML($html);

    $names = $doc->xpath("//*[@class='" . $classname . "']");

    foreach($names as $name) {
        array_push($nameArr, $name);
    }
    return $imageArr;
}

echo json_encode(array("names" => linkExtractor($html,".name")));