如何解析HTML DOM并选择包含特定字符串的元素？

Question

There is a HTML structure like this:

<div>
    <b>
        <label>Company-Name : Anything</label>
    </b>
</div>
<div>
    <b>
        <label>First-Name : Alex</label>
    </b>
</div>
<div>
    <b>
        <label>Cell-phone : [phone]</label>
    </b>
</div>

I have this string: First-Name : and I need to get Alex. In other word, how can I search for string and then select all of that element?

Note1: Always this string First-Name is unique in the page.

Note2: Those elements don't have a constant order. I mean sometimes there is some new <div><b><label> after or before that structure. So the best option is searching for that string.

Note3: I'm using this library.

Answer 1

Correct spelling to "label" first. You can use jquery's $.each to loop through the labels. In the loop, use PHP's strpos to see if the value contains "First-name :". If it does, then you can do an explode() on it and index 1 will be the name you want.