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<?php $text = "#test Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus #tristique non elit eu iaculis. Vivamus eget ultricies nisi. Vivamus hendrerit at mauris condimentum scelerisque. <a href='http://google.co.uk/#donec'>nibh</a> mauris, pulvinar et #commodo a, porta et tellus. Duis eget ante gravida, convallis augue id, blandit lectus. Mauris euismod commodo mi ut fringilla. Sed felis magna, rhoncus vitae mattis varius, sagittis a eros. Donec eget porta ipsum. <a href='#Mauris'>sed mauris ante</a>. Suspendisse potenti. Donec a #pretium #augue, eget hendrerit orci. Integer cursus scelerisque consequat."; $text = preg_replace('/(?:^|\s)#(\w+)/',$text); echo $text; ?>
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught ArgumentCountError: preg_replace() expects at least 3 arguments, 2 given in /in/17IbC:5 Stack trace: #0 /in/17IbC(5): preg_replace('/(?:^|\\s)#(\\w+)...', '#test Lorem ips...') #1 {main} thrown in /in/17IbC on line 5
Process exited with code 255.

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