CODEWITHSUNDEEP
phppreg-replace
BetterMan21
BetterMan21

Reputation: 57

How I can remove new lines only inside the HTML tags

How I can remove new lines only inside the HTML tags with preg_replace ?

Example:

<table>

<tr>

<td></td>
</tr>
</table>

Text here. Text here

Text here.

So after the functions process the above code the return should be:

<table>    <tr>    <td></td>    </tr>    </table>

Text here. Text here

Text here.

Upvotes: 0

Views: 1848

Answers (2)

Alfred Godoy
Alfred Godoy

Reputation: 1043

There might be smarter ways to do this, but however, this will do your job.

$str = "test\n\n test2 <table>\n\n\n test 3</table>\n\n\n test4 test5";

while ($str2 = preg_replace('/(>[^<]*)\n([^<]*<)/', '\\1\\2', $str)) {
    if ($str2 == $str) break;
    $str = $str2;
}

echo ($str);

It looks for newlines in between the > char and the < char, and removes them.

Upvotes: 0

hakre
hakre

Reputation: 197682

How I can remove new lines only inside the HTML tags with preg_replace ?

Technically yes, but actually, HTML does not care for newlines that much, every multiple whitespace characters are actually read as a single one. As your example shows, you replace \n with space or \t, so it's actually the same which brings me to the point you can just do the following:

$html = preg_replace('~(>[^>]*)(*BSR_ANYCRLF)\R([^<]*<)~', '$1 $3', $html);

See as well: php regex to match outside of html tags and How to replace different newline styles in PHP the smartest way?.

A more safe way is to use a HTML parser like DOMDocument and load your fragment as body. Then replace all newlines within textnodes that are childnodes of body childnodes.

Upvotes: 2

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