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<?php $pattern = '/((?<!\w)#\w+)/i'; $subject = <<<EOT Blablalb #toto zdjsdf #ho_yeah EOT; $hashtags = []; $result = preg_replace_callback('/(\s#\w+)/i', function ($matches) use(&$hastags) { $hashtags[] = trim($matches[0]); return ''; }, $subject); var_dump($result, $hashtags);
Output for git.master, git.master_jit, rfc.property-hooks
string(15) "Blablalb zdjsdf" array(0) { }

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