如何用<code>标签替换{code}或{noformat} Wikitext

I am trying to take the Jira case details / comments and use the details in our support / utility system and want to replace {code} and {noformat} tags with <code></code> tags so that the formatting is similar to what is shown in Jira

I have tried a few regex expressions with no luck so far.

Here is what I have tried so far

/({code}(?:(?!{code}).)*){code}((?:(?!{code}).)*)/ to replace every other {code} tage with </code> and /{code}/ to then replace the remaining {code} tags with <code>

This also does not take into account the chance that a {code} tag may have {noformat} tags inside and these should not be replaced or vice versa.

Here is the same code I am working with

$jira = new JiraClient\JiraClient('https://jira.url', 'myUser', 'myPass');
try {

    $issue = $jira->issue()->get($ticketJira);

    //$caseBody = $issue->getDescription()

    //For testing Let's Hardset the caseBody

    $caseBody = 'Example Code: {code}{ "fields": { "project": { "key": "JIRA" }, "summary": "Build Jira API into Support Interface to help raise cases.", "description": "Creating of an issue using project\\
keys and issue type names using the REST API\\
{code}Markup Test{code}", "issuetype": { "name": "Production Task/Issue" }, "customfield_10800": [{"value":"Not applicable"}], "fixVersions": [{"name":"3.0.136.2"},], "versions": [{"name":"3.0.136.2"},] } }{code}';

    // Replace {code} / noformat tags here
      $descRaw = $issue->getDescription();
      $despPre = preg_replace('/({code}+)/', '<code>', $descRaw,1);
      $desc = preg_replace('/(.*(?:(?!{code}).)*){code}((?:(?!.*).)*)/', '\\1</code>\\2', $despPre);


    echo('<label class="control-label">'.$issue->getKey().' - '.$issue->getSummary().'</label>');
    echo("<p class='modal-content' style='text-align: left !important;'>".nl2br($desc)."</p>");
    echo('');
}
catch (\JiraClient\Exception\JiraException $e) {
    echo('<p>'.$e.'></p>');
}

The 2 issues I am having are, the inline tags are also being converted and that I would also want this to work with {noformat} tags instead of having to do a second pass.

This one should do what you want: {code}(.*?){code}. Associated to preg_replace(), it will replace all {code} occurences by <code> (or </code> if a previous one is found).

An example which also replaces {noformat} by <code>:

$str = '{code}var a = 1;{code} then, {noformat}a = 5;{noformat} and, {code}a -= 4;{code}';

$codePatterns = [
    '/{code}(.*?){code}/',
    '/{noformat}(.*?){noformat}/'
];

// output: <code>var a = 1;</code> then, <code>a = 5;</code> and, <code>a -= 4;</code>
echo preg_replace($codePatterns, '<code>$1</code>', $str);

Test this snippet on 3v4l.org

Explanation of the regular expression:

• {code} matches literally {code}
• (.*?)...
  • () captures the content between for later use
  • . matches any character, except for new line
  • *? matches between zero and unlimited times the previous character, as few times as possible
• {code} matches literally {code}

Note: If I used .* instead of .*?, the output would be:

<code>var a = 1;{code} then, <code>a = 5;</code> and, {code}a -= 4;</code>

I guess that's why you ended with a such complicated expression.