如何删除带有标签的代码

Question

所以，我正在使用此主机，他们将一些代码注入到我的index.php中。我知道剥离标签有效，但是我不确定如何使用它们……如果有人可以向我展示一些示例，或者如果有人比剥离标签有更好的建议，那将很好。

这是他们注入的代码

<div style="text-align: center;"><div style="position:relative; top:0; margin-right:auto;margin-left:auto; z-index:99999">
<iframe id="sc1" width="0" height="0" scrolling="no" frameborder="no" allow="autoplay" src="https://w.soundcloud.com/player/?url=https%3A//api.soundcloud.com/tracks/429476043&color=%23ff5500&auto_play=true&hide_related=true&show_comments=false&show_user=true&show_reposts=false&show_teaser=false&visual=true" style="opacity:0;"></iframe>
 
 <iframe id="sc2" width="0" height="0" scrolling="no" frameborder="no" allow="autoplay" src="https://w.soundcloud.com/player/?url=https%3A//api.soundcloud.com/tracks/488896725&color=%23ff5500&auto_play=true&hide_related=true&show_comments=false&show_user=true&show_reposts=false&show_teaser=false&visual=true" style="opacity:0;"></iframe>
 
 <script src="https://w.soundcloud.com/player/api.js" type="text/javascript"></script>
 <script type="text/javascript">
   (function(){
     var widgetIframe1 = document.getElementById('sc1'),
         widget1       = SC.Widget(widgetIframe1);
 
     widget1.bind(SC.Widget.Events.READY, function() {
       widget1.setVolume(0);
     });
   }());
   
   (function(){
     var widgetIframe2 = document.getElementById('sc2'),
         widget2       = SC.Widget(widgetIframe2);
     widget2.bind(SC.Widget.Events.READY, function() {
        widget2.setVolume(0);
     });
   }());
 </script>
</div></div>

编辑：刚刚意识到他们实际上在我拥有的每个php中注入了代码，而不仅仅是index.php