How to implement PHP regular matching that does not contain a certain character

How to implement php regular matching that does not contain a certain character: first create a PHP sample file; then enter the statement "$search = '/86c0a704063348751055e842f0ab8514/is ';preg_match_all($search,$str,$r);"; Finally, execute the file.

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php Regular matching content does not include A certain character

Specific question:

I need to match characters that include 6d267e5fab17ea8bc578f9e7e5e1570b, but they cannot contain 04e913388da01775a4f8f7a1930af93a> and dec3ace20c729a46134a59cb893ab081

I want to match d7eea8d76a7c5d1c127f2cb188d613c3 and dec3ace20c729a46134a59cb893ab081

Implementation method:

<?php
$str = &#39;客户您好，为您推荐以下项目：<项目2:项目名称<项目3:项目名称>>以及<项目1:项目名称>&#39;;
$search = &#39;/<([^<]*?)>/is&#39;;
preg_match_all($search,$str,$r);
echo &#39;<pre class="brush:php;toolbar:false">&#39;;
print_r($r);
echo &#39;

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