How to parse a p tag content with no class and no id using SimpleHTMLdom parser?

this is the html part i want to parse in order to get the text inside the <p> :

<div class="container">
    <h2>title</h2>
    <div class="divIdontNeed"> hi </div>
    <p> I WANT THIS TEXT </p> <====== this is what i want
    <p> i don't want this one </p>
</div>

What i did is a loop (because the html above is on multiple pages and i want all of them on an array $allTexts) :

foreach($html->find('div[class=container]')->find('p',0) as $text){

                    array_push($allTexts, $text->plaintext);
                }

When i do that, i got an error saying Fatal error: Call to a member function find() on array in /path/to/MyTextParser.php

Thank you all

You are getting the error because the first find() returns an array of elements, not just one.

You need to do the loop on the results of that first find():

foreach($html->find('div[class=container]') as $element)
{
   foreach ($element->find('p',0) as $text){
   array_push($allTexts, $text->plaintext);
  }
 }