Regular expressions-How PHP matches the "<", ">" Symbols for non-HTML tags

You need to escape the angle brackets in a text, but some HTML tags need to be left, for example


Wait, how do you write an extensible regular? For example, you only need to exclude


, if you need to exclude more than one HTML tag directly on the pattern to add a group on it? (confusing text is not appropriate for parsing with HTML)
There's something on the internet that ]+> doesn't look right
Or is there a corresponding function or method recommendation?

Reply content:

You need to escape the angle brackets in a text, but some HTML tags need to be left, for example


Wait, how do you write an extensible regular? For example, you only need to exclude


, if you need to exclude more than one HTML tag directly on the pattern to add a group on it? (confusing text is not appropriate for parsing with HTML)
There's something on the internet that ]+> doesn't look right
Or is there a corresponding function or method recommendation?

Preg_replace ("/< (br|p) \") >/i "," & L t;$1& G T; ", $STR);

You can use the Strip_tags function that comes with PHP
http://php.net/manual/zh/function.strip-tags.php

< (?! BR|P) .*?>
May be the meaning, pure is more troublesome, can write program processing

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