<?php
 
$string = "The.Real.Housewives.of.Salt.Lake.City.S01E16.1080p.x265.MeGusta";
$string .= "\r\nMr.Mayor.S01E09.Palmtreereform.1080p.HEVC.x265-MeGusta[eztv.re]";
$string .= "\r\nBattleBots.2015.S05E12.Were.Beast.Slayin.Tonight.1080p.x265.MeGusta";
$string .= "\r\nGrowing.Up.Hip.Hop.Atlanta.S04E08.Call.Security.720p.x265.MeGusta";
 
$pattern = '/(^.*?S[0-9]{1,2}E[0-9]{1,2}\.?)(.*?)((?:1080p|720p|480p).*?)$/m';
$replacement = '$1$3';
$result = preg_replace($pattern, $replacement, $string);
echo $result;
 
 

PD9waHAKCiRzdHJpbmcgPSAiVGhlLlJlYWwuSG91c2V3aXZlcy5vZi5TYWx0Lkxha2UuQ2l0eS5TMDFFMTYuMTA4MHAueDI2NS5NZUd1c3RhIjsKJHN0cmluZyAuPSAiXHJcbk1yLk1heW9yLlMwMUUwOS5QYWxtdHJlZXJlZm9ybS4xMDgwcC5IRVZDLngyNjUtTWVHdXN0YVtlenR2LnJlXSI7CiRzdHJpbmcgLj0gIlxyXG5CYXR0bGVCb3RzLjIwMTUuUzA1RTEyLldlcmUuQmVhc3QuU2xheWluLlRvbmlnaHQuMTA4MHAueDI2NS5NZUd1c3RhIjsKJHN0cmluZyAuPSAiXHJcbkdyb3dpbmcuVXAuSGlwLkhvcC5BdGxhbnRhLlMwNEUwOC5DYWxsLlNlY3VyaXR5LjcyMHAueDI2NS5NZUd1c3RhIjsKCiRwYXR0ZXJuID0gJy8oXi4qP1NbMC05XXsxLDJ9RVswLTldezEsMn1cLj8pKC4qPykoKD86MTA4MHB8NzIwcHw0ODBwKS4qPykkL20nOwokcmVwbGFjZW1lbnQgPSAnJDEkMyc7CiRyZXN1bHQgPSBwcmVnX3JlcGxhY2UoJHBhdHRlcm4sICRyZXBsYWNlbWVudCwgJHN0cmluZyk7CmVjaG8gJHJlc3VsdDsKCg==