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<?php function my_replace (string $fullText, string $searchText) { $searches = str_replace(' ', '|', $searchText); return preg_replace("/\b(?:$searches)\b\K/i", "<-", $fullText); } echo my_replace('A week ago, Elvis left the Building', 'elvis left');
Output for git.master, git.master_jit, rfc.property-hooks
A week ago, Elvis<- left<- the Building

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