title: "Allocation of JIT memory failed, PCRE JIT will be disabled" warning in PHP 7
body: <p>I'm transitioning my website from PHP v.5 installed on a shared web-hosting account (at DreamHost) to run on PHP 7.3.11. After transition, I started noticing that once in a while I get these warnings:</p>
  
  <blockquote>
    <p>Warning: preg_match_all(): Allocation of JIT memory failed, PCRE JIT
    will be disabled. This is likely caused by security restrictions.
    Either grant PHP permission to allocate executable memory, or set
    pcre.jit=0</p>
  </blockquote>
  
  <p>The last one originated from this line of code that was supposed to replace special tags in my posted HTML for the page:</p>
  
  <pre><code>if(preg_match_all("/\[".$tagBegin."(\S)+\]/U", $html, $matches, PREG_OFFSET_CAPTURE) !== false)
  </code></pre>
  
  <p>Is there something that I need to do differently in v.7.3 to avoid that warning?</p>