CODEWITHSUNDEEP
phpreplacehtml-parsingcpu-wordclassname
user1007828
user1007828

Reputation: 11

Replace word not found as a visible text of a tag with a specified class name or any of its descendants

I have a string, like this:

<p>Ple ple ple BLA xo xo xo <span class="tooltip-content"><span class="tooltip-text">uuu BLA pla</span></span> he he he ha ha ha.</p>

How can I replace a word BLA but not the one(s) within span.tooltip-content? Only the one(s) from "outside" the span tag should be replaced.

Upvotes: -1

Views: 76

Answers (2)

mickmackusa
mickmackusa

Reputation: 47764

Ideally, you'd parse the valid HTML with a legitimate parser, then use regex to only replace the search term with word boundaries (so that BLASPHEMY wasn't accidentally corrupted).

I'll even throw in a regex conditional expression to either trim the leading or trailing whitespace with the found term (but it won't replace whitespace on both ends -- that would bad).

Code: (Demo)

$html = <<<HTML
<p>Ple ple ple BLA xo xo xo <span class="tooltip-content"><span class="tooltip-text">uuu BLA pla</span></span> he BLAZE he BLA he ha ha ha.</p>
HTML;
$find = 'BLA';

$doc = new DOMDocument();
$doc->loadHTML($html, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
$xpath = new DOMXPath($doc);
foreach ($xpath->query('//text()[not(ancestor::span[contains(@class, "tooltip-content")])]') as $node) {
    $node->nodeValue = preg_replace("/(\s)?\b$find\b(?(1)|\s*)/", '', $node->nodeValue);
}
echo $doc->saveHTML();

Output:

<p>Ple ple ple xo xo xo <span class="tooltip-content"><span class="tooltip-text">uuu BLA pla</span></span> he BLAZE he he ha ha ha.</p>

Building a pure regex solution would require too much convolution with accommodation for nested tags, varying quotation, optional attributes, text not inside of opening tags, and other such nasties. It is much cleaner to use XPath to exclude text nodes belonging to tags which are children of tags with the class tooltip-content.

Upvotes: 0

Smas
Smas

Reputation: 1

Not elegant, but fastest solution that come to my mind is:

  1. remove everything from $string between "<span class..." and closing tag using strpos function

then

  1. str_replace ("bla", "with something", $string);

Upvotes: 0

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