Online PHP editor | refs for 8Y32J

<?php final class NonUtfToUtfOffset { /** @var int[] */ private $utfMap = []; public function __construct(string $content) { $contentLength = mb_strlen($content); for ($offset = 0; $offset < $contentLength; $offset ++) { $char = mb_substr($content, $offset, 1); $nonUtfLength = strlen($char); for ($charOffset = 0; $charOffset < $nonUtfLength; $charOffset ++) { $this->utfMap[] = $offset; } } } public function convertOffset(int $nonUtfOffset): int { return $this->utfMap[$nonUtfOffset]; } } $content = 'aą bać d'; $offsetConverter = new NonUtfToUtfOffset($content); preg_match_all('#(bać)#ui', $content, $m, PREG_OFFSET_CAPTURE); foreach ($m[1] as [$word, $offset]) { echo "bad: " . mb_substr($content, $offset, mb_strlen($word))."\n"; echo "good: " . mb_substr($content, $offsetConverter->convertOffset($offset), mb_strlen($word))."\n"; }