Use css in simple_html_dom php?

Question

I have source code :

<li class="parent">
<a href="#">F</a>
<ul>
    <li>xx</li>
    <li>xx</li>
     ......
</ul>
</li>

I want get plaintext of tag li:nth-child(1) by simple_html_dom :

$html->find("li.parent li:nth-child(1)")

not

$html->find("li.parent li",0);

to find the text of the a tag you have to use this line of code $html->find("li.parent a") — Luthando Ntsekwa
– Luthando Ntsekwa, Commented Jun 2, 2015 at 7:30
@LuthandoLoot if you have only one a tag else you must loop over the result ;) — Maraboc
– Maraboc, Commented Jun 2, 2015 at 7:33

pguardiario · Accepted Answer · 2015-06-03 03:00:50Z

2

You can't use complicated css with simple html dom. I suggest switching to this one:

$html = <<<EOF
<li class="parent">
<a href="#">F</a>
<ul>
    <li>xxx</li>
    <li>yyy</li>
</ul>
</li>
EOF;

require_once('advanced_html_dom.php');
$doc = str_get_html($html);
echo $doc->find("li.parent li:nth-child(2)", 0)->text;
// yyy

edited Jun 3, 2015 at 3:00

answered Jun 2, 2015 at 22:39

pguardiario

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2 Comments

Anh NC Over a year ago

It not work :(

Catchable fatal error: Argument 2 passed to DOMXPath::query() must be an instance of DOMNode, null given, called in D:\Work\PHP\xampp\htdocs\crawler\includes\base\advanced_html_dom.php on line 89 and defined in D:\Work\PHP\xampp\htdocs\crawler\includes\base\advanced_html_dom.php on line 50

pguardiario Over a year ago

That means it's not there. See my edit, this works fine as is.

Luthando Ntsekwa · Accepted Answer · 2015-06-02 07:39:00Z

0

To find only the first child of the ul you can use:

$html->find("li.parent li:nth-child(1)")

OR

$html->find("li.parent li:first-child")

But to get all the li's you have to use a loop like this:

 foreach($html->find("li.parent li") as $element) 
   echo $element->plaintext. '<br>';

answered Jun 2, 2015 at 7:39

Luthando Ntsekwa

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12 Comments

Anh NC Over a year ago

If i want get li.parent li:nth-child(2,3...4...n) ? Because i have file config. My code read this file. In file have structure selector css. I want change them in file config, not edit my code. Ex: $html->find("li.parent li",0...n) by $html->find("li.parent li:nth-child(1...n)")

Luthando Ntsekwa Over a year ago

you can use the first option to get li in any position you want, e.g if you want the second li you can get it this way $html->find("li.parent li:nth-child(2)")

Anh NC Over a year ago

Thanks ! It seems it does not working. I have a multi-level menu, I want to take just under the menu tag a in the parent menu , and not get a in the submenu. e.g : $html->find("li.parent > a") .. But it get all tag a in parent menu and submenu .. LOL !

Luthando Ntsekwa Over a year ago

i dont understand what you're saying, if you want the sub li's text you cannot use a tag in your selector because those li's are not under the a tag

Luthando Ntsekwa Over a year ago

try this foreach($html->find("li.parent > a > ul > li:nth-child(1) > a")) echo $element->href. '<br>';

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