note 121041 added to class.domxpath

Using XPath expressions can save a lot of programming and allow you to home in on only the nodes you want. Suppose you want to delete all empty <p> tags. If you create a query using the following XPath expression, you can find <p> tags that do not have any text (other than spaces), any attributes, any children or comments: $expression = "//p[not(@*) and not(*) and not(./comment()) and normalize-space(text())='']"; This expression will only find para tags that look like: <p>[any number of spaces]</p> <p></p> Imagine the code you would have to add if you used DOMDocument::getElementsByTagName("p") instead. ---- Server IP: 72.52.91.14 Probable Submitter: 23.249.203.110 ---- Manual Page -- http://php.net/manual/en/class.domxpath.php Edit -- https://master.php.net/note/edit/121041 Del: integrated -- https://master.php.net/note/delete/121041/integrated Del: useless -- https://master.php.net/note/delete/121041/useless Del: bad code -- https://master.php.net/note/delete/121041/bad+code Del: spam -- https://master.php.net/note/delete/121041/spam Del: non-english -- https://master.php.net/note/delete/121041/non-english Del: in docs -- https://master.php.net/note/delete/121041/in+docs Del: other reasons-- https://master.php.net/note/delete/121041 Reject -- https://master.php.net/note/reject/121041 Search -- https://master.php.net/manage/user-notes.php