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<?php function my_replace(string $fullText, string $searchText){ $searches = explode(' ',$searchText); $replace = array(); foreach ($searches as $i => $search){ $position = strlen($search)+stripos($fullText, $search); $fullText = substr_replace($fullText, '<- ', $position, 0); } return $fullText; } echo my_replace('A week ago, Elvis left the Building', 'elvis left bonk');

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