Let’s say you have this as you retrieved text (whether from html or any other form):
$str="THE HTML FILE:
Test
Test1
Test2
Test3";
this function will remove “Test2” from the string:
$newstr=str_replace("Test2","",$str);
for more information of the function take a look at here
Just one more thing, if you have <br>
after each line in your example, you need to do the same for those too.