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    <p>Maybe this will help? It's very, very basic and could be prone to errors.</p> <pre><code>$test = '&lt;ul&gt; &lt;li&gt; &lt;span&gt;&lt;span&gt;&lt;span&gt;Manager&lt;/span&gt;&lt;/span&gt;&lt;/span&gt; &lt;/li&gt; &lt;li&gt; &lt;span&gt;&lt;span&gt;&lt;span&gt;physical&lt;/span&gt;&lt;/span&gt;&lt;/span&gt; &lt;/li&gt; &lt;li&gt; &lt;span&gt;&lt;span&gt;&lt;span&gt;transport &lt;/span&gt;&lt;/span&gt;&lt;/span&gt; &lt;/li&gt; &lt;li&gt; &lt;span&gt; &lt;span&gt;&lt;span&gt; Australia&lt;/span&gt;&lt;/span&gt;&lt;/span&gt; &lt;/li&gt; &lt;/ul&gt;'; echo preg_replace('/\n?&lt;(.*?)&gt;\n/', '&lt;$1&gt;', str_replace("\r\n", "\n", $test)); </code></pre> <p>Edit: I re-read your question and feel that wasn't exactly what you were after. So, I made this:</p> <pre><code>function strip_tag_nl($tag, $subject) { $tag = preg_quote($tag); return preg_replace_callback('/(&lt;' . $tag . '(.*?)&gt;)\n?(.*?)(&lt;\/' . $tag . '&gt;)/s', function($matches) { $stripped = preg_replace(array('/\n?&lt;(.*?)&gt;\n/'), '&lt;$1&gt;', $matches[3]); return $matches[1] . $stripped . $matches[4]; }, str_replace("\r\n", "\n", $subject)); } echo strip_tag_nl('li', $test); </code></pre> <p>Pass it the tag you want things between it to have newlines stripped. For example, <code>strip_tag_nl('ul', $text)</code> for your original question... if you do <code>strip_tag_nl('li', $text)</code>, you'll get this:</p> <pre><code>&lt;ul&gt; &lt;li&gt;&lt;span&gt;&lt;span&gt;&lt;span&gt;Manager&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/li&gt; &lt;li&gt;&lt;span&gt;&lt;span&gt;&lt;span&gt;physical&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/li&gt; &lt;li&gt;&lt;span&gt;&lt;span&gt;&lt;span&gt;transport&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/li&gt; &lt;li&gt;&lt;span&gt;&lt;span&gt;&lt;span&gt; Australia&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/li&gt; &lt;/ul&gt; </code></pre>
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    1. COThis works nicely, appreciate the response. It does exactly what I was after which was target specific tags and remove linebreaks.
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