SomeText...rem
bold
SomeText...rem
Underline
Underline
SomeText...rem
SomeText...rem
anchor
SomeText...rem
SomeText...remUnderlineUnderline
UnderlineUnderlineSomeText...rem';
echo preg_replace_callback('/(?s)<(\w+)[^>]*>(.*?)<\/\1>/', function ($m) {
return strpos($m[2], '...rem') !== false ? '' : $m[0];
}, $string);