1. Specify tags for regular expression filtering
| The code is as follows: |
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/** * @ Param $ content
* @ Return mixed
* Filter the reserved content of Tag.
*/
Public function delete_tags_a ($ content ){
$ Content = preg_replace ("# <a [^>] *> (.*?) </A> # is "," $1 ", $ content );
Return $ content;
} |
2. Filter all html tag content
| The code is as follows: |
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/**
* @ Param $ content
* @ Param string $ tag: input the tag to be deleted.
* @ Param bool $ ident true: the tag content is retained; false: the tag content is not retained.
* @ Return mixed
*/
Public function delete_tags ($ content, $ tag = 'a', $ ident = true ){
If ($ ident ){
$ Content = preg_replace ("# <{$ tag} [^>] *> (.*?) </{$ Tag }>#is "," $1 ", $ content );
} Else {
$ Content = preg_replace ("/(<$ tag. *?> [\ S \ S] *? <\/$ Tag>)/",'', $ content );
}
Return $ content;
} |
3.
| The code is as follows: |
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/**
* @ Param $ str
* @ Return mixed | string
* Filter all html tags
*/
Public function deletehtml ($ str)
{
$ Str = trim ($ str );
$ Str = strip_tags ($ str ,"");
$ Str = preg_replace ("{\ t}", "", $ str );
$ Str = preg_replace ("{\ r \ n}", "", $ str );
$ Str = preg_replace ("{\ r}", "", $ str );
$ Str = preg_replace ("{\ n}", "", $ str );
$ Str = preg_replace ("{}", "", $ str );
$ Str = preg_replace ("{}", "", $ str );
Return $ str;
} |
Of course, there are some php functions that can be directly filtered. They will filter all html tags except strings. I will not introduce this function.
