解析元标签php

Question

我的HTML页面上有此代码：

<header class="adPage__header">
    <h1 itemprop="name">BMW 3 Series</h1>
</header>
<ul class="adPage__content__price-feature__prices">
    <li class=" adPage__content__price-feature__prices__price is-main "> 
        <span class="adPage__content__price-feature__prices__price__value" itemprop="price" content="2850"> 2 850 </span>
        <span class="adPage__content__price-feature__prices__price__currency" itemprop="priceCurrency" content="€"> € </span> 
   </li>
</ul>

如何将它们解析到我的PHP代码中？ 我尝试这样的尝试：

$ec = file_get_contents($text);
  preg_match("/(?<=itemprop=\"price\"\ content=\").*?(?=\ €)/",$ec,$matches_price);
  preg_match("/(?<=h1=\"itemprop=\"\ name\">).*?(?=\ )/",$ec,$matches_nazv);
  preg_match("/(?<=src=\").*?(?=\"\ alt)/",$ec,$matches_photo);

thx寻求帮助！