How to remove tag inside paragraph

Hi it short tutorial for me, when you build some CMS let say only input article and upload images, and you need to customize it in front end by using css but inside table there is tag
, what you should do if the case should make blocknote or H1 so you need to remove tag
So here is my simple script remove tag
<?php $ringkasan=$row->ar_ringkasan; //came from database $ringkas=str_ireplace('<p> ','',$ringkasan); //remove tag <p> came from database ?> Hope you understand :D