How to highlight what is between 2 tags?

Question

PHP

There is an xml file, it has values

<paramname><![CDATA[Модель]]></paramname>
          <paramvalue><![CDATA[RAK-35REF/RAC-35WEF]]></paramvalue>
          <paramname><![CDATA[Коэффициент SEER / Класс сезонной энергоэффективности (охлаждение)]]></paramname>
          <paramvalue><![CDATA[6,1/A++]]></paramvalue>
          <paramname><![CDATA[Коэффициент/Класс сезонной энергоэффективности (нагрев), SCOP]]></paramname>
          <paramvalue><![CDATA[4,2/A+]]></paramvalue>
          <paramname><![CDATA[Коэффициент/Класс энергоэффективности (охлаждение), EER]]></paramname>
          <paramvalue><![CDATA[3,21/A]]></paramvalue>
          <paramname><![CDATA[Производительность (охлаждение), кВт]]></paramname>
          <paramvalue><![CDATA[3,50 (0,90–4,00)]]></paramvalue>
          <paramname><![CDATA[Потребляемая мощность на охлаждение, кВт]]></paramname>

you need to pull out the values ​​​​between the paramname tags, that is, the model should be pulled out of the line in several ways that I found on the network, for example, these
<paramname><![CDATA[Модель]]></paramname>

preg_match_all('/<paramname[^>]*?>(.*?)<\/paramname>/si',$xml,$matches);
preg_match_all('<paramname>([\s\S]+?)</paramname>',$xml,$matches);

It did not work, as far as I understand the problem is
<![CDATA[ ]]>
how can I solve this issue?

Answer 1

preg_match_all('/<paramname>(.+)<\/paramname>/', $text, $matches); // <![CDATA[Модель]]>

preg_match_all('/<paramname><!\[CDATA\[(.+)\]\]><\/paramname>/', $text, $matches); //Модель

Test preg_match_all

Answer 2

preg_match_all('~<paramname[^<]*<!\[CDATA\[(.+)\]\]>[^<]*<\/paramname>~', $text, $matches);

And it also makes no sense to parse xml with regular expressions, when you can use the library designed for this.
With your input data, the desired result can be obtained something like this

<?php
$xml = simplexml_load_string($text, null, LIBXML_NOCDATA);

print_r((array)$xml->characteristics->paramvalue);