Code Duplication    Length = 7-7 lines in 2 locations

src/voku/helper/UTF8.php 2 locations

@@ 3225-3231 (lines=7) @@
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      return [];
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    }
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    if (\ctype_digit((string)$var1)) {
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      $start = (int)$var1;
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    } elseif (\ctype_xdigit($var1)) {
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      $start = (int)self::hex_to_int($var1);
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    } else {
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      $start = self::ord($var1);
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    }
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    if (!$start) {
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      return [];
@@ 3237-3243 (lines=7) @@
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      return [];
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    }
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    if (\ctype_digit((string)$var2)) {
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      $end = (int)$var2;
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    } elseif (\ctype_xdigit($var2)) {
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      $end = (int)self::hex_to_int($var2);
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    } else {
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      $end = self::ord($var2);
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    }
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    if (!$end) {
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      return [];