PHP - preg_split html by line break or paragraph
<p>Lorem ipsum</p>
Dolor sit amet
<br><br>
consectetur
<p>adipiscing</p>
<br>elit.

Array(
    [0] => <p>Lorem ipsum</p>
           Dolor sit amet
    [1] => <br><br>
           consectetur
           <p>adipiscing</p>
           <br>elit.
)

$my_string = '<p>Lorem ipsum</p>
Dolor sit amet
<br><br>
consectetur
<p>adipiscing</p>
<br>elit.';

$split_string = explode('<br><br>', $my_string);

echo $split_string[0];
echo $split_string[1];

$result_array = preg_split("/(?=<br><br>)/is", $my_string);