regex101: PCRE (Legacy) Match Workspace

Regular Expression

<span>\s*<iframe.+?>.*?<\/iframe>\s*<\/span>

New

<span>
  <iframe src="//cdn.embedly.com/widgets/media.html?src=https://www.youtube.com/embed/e7zCqsjK1Vg?feature=oembed&amp;url=http://www.youtube.com/watch?v=e7zCqsjK1Vg&amp;image=https://i.ytimg.com/vi/e7zCqsjK1Vg/hqdefault.jpg&amp;key=2aa3c4d5f3de4f5b9120b660ad850dc9&amp;type=text/html&amp;schema=youtube" width="600" height="338" scrolling="no" frameborder="0" allowfullscreen="" style="box-sizing: content-box; max-width: 100%; border: 0px;" fr-original-style="box-sizing: content-box; max-width: 100%; border: 0px;" fr-original-class="embedly-embed"></iframe>
</span>

<h1>Testing</h1>
  <span>
    <iframe src="//cdn.embedly.com/widgets/media.html?src=https://www.youtube.com/embed/skLz87ixE48?feature=oembed&amp;url=http://www.youtube.com/watch?v=skLz87ixE48&amp;image=https://i.ytimg.com/vi/skLz87ixE48/hqdefault.jpg&amp;key=2aa3c4d5f3de4f5b9120b660ad850dc9&amp;type=text/html&amp;schema=youtube" width="600" height="338" scrolling="no" frameborder="0" allowfullscreen="" style="box-sizing: content-box; max-width: 100%; border: 0px;" fr-original-style="box-sizing: content-box; max-width: 100%; border: 0px;" fr-original-class="embedly-embed"></iframe>
  </span>

Regular Expressions 101

Regular Expression

Extraction