RegEx - Match all URLs in string, excluding ones in tag?</a></h1> </div> <div class="grid fw-wrap pb8 mb16 bb bc-black-075"> <div class="grid--cell ws-nowrap mr16 mb8" title="2016-01-12 19:07:53Z"> <span class="fc-light mr2">Asked</span> <time itemprop="dateCreated" datetime="2015-10-02T23:15:41.650" class="fromnow">Oct 02 '15 at 23:15</time> </div> <div class="grid--cell ws-nowrap mr16 mb8"> <span class="fc-light mr2">Active</span> <time class="fromnow" title="2015-10-02T23:26:47.977" datetime="2015-10-02T23:26:47.977">Oct 02 '15 at 23:26</a> </div> <div class="grid--cell ws-nowrap mb8" title="Viewed 400 times"> <span class="fc-light mr2">Viewed</span> 400 times </div> </div> <div id="mainbar" role="main" aria-label="questions and answers"> <div id="question" class="question" data-questionid="32917156" data-ownerid="2464756" data-score="0"> <div class="post-layout"> <div class="votecell post-layout--left"> <div class="js-voting-container grid jc-center fd-column ai-stretch gs4 fc-black-200" data-post-id="32917156"> <button class="js-vote-up-btn grid--cell s-btn s-btnunset c-pointer"><svg aria-hidden="true" class="m0 svg-icon iconArrowUpLg" width="36" height="36" viewBox="0 0 36 36"><path d="M2 26h32L18 10 2 26z"></path></svg></button> <div class="js-vote-count grid--cell fc-black-500 fs-title grid fd-column ai-center" itemprop="upvoteCount" data-value="0">0</div> <button class="js-bookmark-btn s-btn s-btnunset c-pointer py4"> <svg aria-hidden="true" class="svg-icon iconBookmark" width="18" height="18" viewBox="0 0 18 18"><path d="M6 1a2 2 0 00-2 2v14l5-4 5 4V3a2 2 0 00-2-2H6zm3.9 3.83h2.9l-2.35 1.7.9 2.77L9 7.59l-2.35 1.7.9-2.76-2.35-1.7h2.9L9 2.06l.9 2.77z"></path></svg> <div class="js-bookmark-count mt4" data-value=""></div> </button> </div> </div> <div class="postcell post-layout--right"> <div class="s-prose js-post-body" itemprop="text"><p>I'm using MediaEmbed (<a class="external-link" href="https://github.com/dereuromark/MediaEmbed" rel="nofollow">https://github.com/dereuromark/MediaEmbed</a>) to convert any media URLs in a string to their respective embed code, but it's also catching media URLs within iframes (already embedded).</p> <p>The expression I'm using to match links is:</p> <pre><code>"~[[:alpha:]]+://[^<>[:space:]]+[[:alnum:]/]~" </code></pre> <p>What would this need to be changed to in order for it to not match if the URL is within an iframe?</p></div> <div class="mt24 mb12"> <div class="post-taglist grid gs4 gsy fd-column"> <div class="grid ps-relative"> <a href="../../questions/tagged/php" class="post-tag js-gps-track" title="show questions tagged 'php'" rel="tag">php</a> <a href="../../questions/tagged/regex" class="post-tag js-gps-track" title="show questions tagged 'regex'" rel="tag">regex</a> <a href="../../questions/tagged/url" class="post-tag js-gps-track" title="show questions tagged 'url'" rel="tag">url</a> </div> </div> </div> <div class="mb0"> <div class="mt16 grid gs8 gsy fw-wrap jc-end ai-start pt4 mb16"> <div class="grid--cell mr16 fl1 w96"></div> <div class="post-signature owner grid--cell"> <div class="s-user-card s-user-card"> <time class="s-user-card--time" datetime="asked Oct 02 '15 at 23:15">asked Oct 02 '15 at 23:15</time> <a href="../../users/2464756/mattd" class="s-avatar s-avatar32 s-user-card--avatar"> <img class="s-avatar--image" src="../../users/profiles/2464756.webp" data-jdenticon-width="32" data-jdenticon-height="32" data-jdenticon-value="MattD" /> </a> <div class="s-user-card--info"> <a href="../../users/2464756/mattd" class="s-user-card--link">MattD</a> <ul class="s-user-card--awards"> <li class="s-user-card--rep" title="reputation score">179</li> <li class="s-award-bling s-award-blingsilver" title="1 silver badges">1</li> <li class="s-award-bling s-award-bling__bronze" title="13 bronze badges">13</li> </ul> </div> </div> </div> </div> </div> </div> <div class="post-layout--right js-post-comments-component"> <div id="comments-32917156" class="comments js-comments-container bt bc-black-075 mt12 " data-post-id="32917156" data-min-length="15"> <ul class="comments-list js-comments-list" data-remaining-comments-count="0" data-canpost="false" data-cansee="true" data-comments-unavailable="false" data-addlink-disabled="true"> <li id="comment-53662096" class="comment js-comment " data-comment-id="53662096" data-comment-owner-id="345031" data-comment-score="1"> <div class="js-comment-actions comment-actions"> <div class="comment-score js-comment-edit-hide"> <span title="number of 'useful comment' votes received" class="warm">1</span> </div> </div> <div class="comment-text js-comment-text-and-form"> <a name="comment53662096_32917156"></a> <div class="comment-body js-comment-edit-hide"> <span class="comment-copy">See also: [PHP Regular expression to match keyword outside HTML tag](http://stackoverflow.com/questions/7798829/php-regular-expression-to-match-keyword-outside-html-tag-a) and [Regex ignore URL already in HTML tags](http://stackoverflow.com/questions/9567836/regex-ignore-url-already-in-html-tags) and [php regex to match outside of html tags](http://stackoverflow.com/questions/7891771/php-regex-to-match-outside-of-html-tags)</span> – <a href="../../users/345031/mario" title="144,265 reputation" class="comment-user ">mario</a> <span class="comment-date" dir="ltr"><a class="comment-link" href="../../questions/32917156/regex-match-all-urls-in-string-excluding-ones-in-iframe-tag#comment53662096_32917156"><span title="2015-10-02T23:17:37.630 License: CC BY-SA 3.0" class="relativetime-clean">Oct 02 '15 at 23:17</span></a></span> </div> </div> </li> <li id="comment-53662192" class="comment js-comment " data-comment-id="53662192" data-comment-owner-id="2464756" data-comment-score="0"> <div class="js-comment-actions comment-actions"> <div class="comment-score js-comment-edit-hide"> </div> </div> <div class="comment-text js-comment-text-and-form"> <a name="comment53662192_32917156"></a> <div class="comment-body js-comment-edit-hide"> <span class="comment-copy">Thank you, your references helped me come up with the solution.</span> – <a href="../../users/2464756/mattd" title="179 reputation" class="comment-user owner">MattD</a> <span class="comment-date" dir="ltr"><a class="comment-link" href="../../questions/32917156/regex-match-all-urls-in-string-excluding-ones-in-iframe-tag#comment53662192_32917156"><span title="2015-10-02T23:25:35.200 License: CC BY-SA 3.0" class="relativetime-clean">Oct 02 '15 at 23:25</span></a></span> </div> </div> </li> </ul> </div> </div> </div> </div> <div id="answers"> <a name="tab-top"></a> <div id="answers-header"> <div class="answers-subheader grid ai-center mb8"> <div class="grid--cell fl1"> <h2 class="mb0" data-answercount="9">1 Answers<span style="display:none;" itemprop="answerCount">1</span></h2> </div> </div> </div> <a name="32917242"></a> <div id="answer-32917242" class="answer " data-answerid="32917242" data-ownerid="2464756" data-score="0" itemprop="suggestedAnswer" itemscope="" itemtype="https://schema.org/Answer"> <div class="post-layout"> <div class="votecell post-layout--left"> <div class="js-voting-container grid jc-center fd-column ai-stretch gs4 fc-black-200" data-post-id="32917242"> <button class="js-vote-up-btn grid--cell s-btn s-btnunset c-pointer"><svg aria-hidden="true" class="m0 svg-icon iconArrowUpLg" width="36" height="36" viewBox="0 0 36 36"><path d="M2 26h32L18 10 2 26z"></path></svg></button> <div class="js-vote-count grid--cell fc-black-500 fs-title grid fd-column ai-center" itemprop="upvoteCount" data-value="0">0</div> </div> </div> <div class="postcell post-layout--right"> <div class="s-prose js-post-body" itemprop="text"><p>Solution code:</p> <pre><code>'/(?<!=")(\b[\w]+:\/\/[\w-?&;#~=\.\/\@]+[\w\/])/' </code></pre></div> <div class="mb0"> <div class="mt16 grid gs8 gsy fw-wrap jc-end ai-start pt4 mb16"> <div class="grid--cell mr16 fl1 w96"></div> <div class="post-signature owner grid--cell"> <div class="s-user-card s-user-card"> <time class="s-user-card--time" datetime="answered Oct 02 '15 at 23:26">answered Oct 02 '15 at 23:26</time> <a href="../../users/2464756/mattd" class="s-avatar s-avatar32 s-user-card--avatar"> <img class="s-avatar--image" src="../../users/profiles/2464756.webp" data-jdenticon-width="32" data-jdenticon-height="32" data-jdenticon-value="MattD" /> </a> <div class="s-user-card--info"> <a href="../../users/2464756/mattd" class="s-user-card--link">MattD</a> <ul class="s-user-card--awards"> <li class="s-user-card--rep" title="reputation score">179</li> <li class="s-award-bling s-award-blingsilver" title="1 silver badges">1</li> <li class="s-award-bling s-award-blingbronze" title="13 bronze badges">13</li> </ul> </div> </div> </div> </div> </div> </div> <div class="post-layout--right js-post-comments-component"> </div> </div> </div> </div> </div> </div> </div> <script src="../../static/js/stack-icons.js"></script> <script 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