Hi I have a html like
<html>
<head>
<title>
Some title
</title>
</head>
<body>
<div id="one"> some sample info </div>
</body>
</html>
How can I remove white spaces in this html except those in contents and within the tags using some regex using preg_replace? so to get something like this
<html><head><title>Some title</title></head><body><div id="one">some sample info</div></body></html>
please can anyone help me with this?? :)
You can replace (?<=>)\s+(?=<)|(?<=>)\s+(?!=<)|(?!<=>)\s+(?=<) with empty strings.
Edit: There's a simpler form: replace (?<=>)\s+|\s+(?=<)
Simply spoken, this regex will replace a group of one or more whitespaces if it has a > to the left or a < to the right.
It actually has two parts joined by OR (symbol: |), so either one may match:
(?<=>)\s+ - this will match one or more whitespaces (\s+ in the regex), if it is preceded by a < (in regex: (?<=>)).
\s+(?!=<) - this will match one or more whitespaces if it is followed by a < (in regex: (?!=<))
Learn more about regex.
> or < symbols in any of the textnodes in the html document. I would not recommend this technique to anyone. This is just another case where using regex to do a DOM parser's job is inappropriate. Researchers, please be informed that regex is "DOM-ignorant" -- it doesn't know if it is matching the start/end of a tag or merely something that resembles the start/end of a tag. At the very least, this regex is too primitive to do a consistently good job.
<pre>elements?