- preg_replace: documentation ( source)
<?php
$content = preg_replace('/\xEE[\x80-\xBF][\x80-\xBF]|\xEF[\x81-\x83][\x80-\xBF]/', '', '<blockquote class="twitter-tweet" lang="en"><p lang="en" dir="ltr">We are just in love with Vieques ππ΅π·π’ππ£πΌπΈπ΄π
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@ Vieques Island - Puerto Rico <a href="https://t.co/KQ1TZliX3m">https://t.co/KQ1TZliX3m</a></p>— Anahi Martinez (@annisuu) <a href="https://twitter.com/annisuu/status/640338584923467776">September 6, 2015</a></blockquote><script async src="//platform.twitter.com/widgets.js" charset="utf-8"></script>');