regex101: PCRE2 (PHP) Match Workspace

Regular Expression

<a[^>]*?href=(["\'])?((?:.(?!\1|>))*.?)\1?

New

<li class="navItem "><a href="/services/" lang="de" hreflang="de">Services</a></li>
<a class="iMacLink" href="/portfolio/" ><div class="iMacOverlay"></div><div class="">Super</div></a></div>
<div class="addthis_toolbox addthis_default_style">
<a itemprop="url" target="_blank" href="https://www.facebook.com/any-profile" title="facebook" class="facebookSite"><span class="icon-facebook"></span></a>
<a itemprop="url" target="_blank" href="https://twitter.com/any-profile" title="twitter" class="twitterSite"><span class="icon-twitter"></span></a>
<a itemprop="url" target="_blank" href="https://pinterest.com/any-profile" title="pinterest" class="pinterestSite"><span class="icon-pinterest"></span></a>
<a itemprop="url" target="_blank" href="//feeds.feedburner.comany-profile?format=xml" title="rss" class="rss"><span class="icon-rss"></span></a>
</div>


<a class="social facebookProfil" href="http://www.facebook.com/any-profile">Facebook</a>
<a class="social facebookProfil" href='https://www.facebook.com/single-quotes'>Facebook</a>
<a class="social facebookProfil" href=https://www.facebook.com/no-quotes>Facebook</a>
<a class="social youtubeProfil" href="http://www.youtube.com/user/any-profile">Youtube</a>

<a class="social vimeoProfil" href="http://vimeo.com/any-profile">Vimeo</a>
<a class="social xingProfil"  href="https://www.xing.com/companies/any-profile">XING</a>
<a class="social twitterProfil" href="https://twitter.com/any-profile">Folge bei Twitter</a>

<a href="https://www.instagram.com/p/CN-Kx40nOW0/">Instagram Beitrag</a>
<a href="http://instagram.com/quellenhofaachen">Instagram Profil</a>
<a href="https://www.instagram.com/explore/tags/url">Instagram Tag-Url</a>
<A href="https://www.Instagram.com/uppercase-link">Upercase-link</A>

<a href="http://instagram.com/unique">Unique-test http</a>
<a href="//instagram.com/unique">Unique-test protocol relative</a>
<a href="https://instagram.com/unique">Unique-test https</a>
<a href="http://www.instagram.com/unique">Unique-test www</a>