framework/db/SqlTokenizer.php
protected function startsWithAnyLongest(array &$with, $caseSensitive, &$length = null, &$content = null)
    {
        if (empty($with)) {
            return false;
        }

        if (!is_array(reset($with))) {
            usort($with, function ($string1, $string2) {
                return mb_strlen($string2, 'UTF-8') - mb_strlen($string1, 'UTF-8');
            });
            $map = [];
            foreach ($with as $string) {
                $map[mb_strlen($string, 'UTF-8')][$caseSensitive ? $string : mb_strtoupper($string, 'UTF-8')] = true;
            }
            $with = $map;
        }
        foreach ($with as $testLength => $testValues) {
            $content = $this->substring($testLength, $caseSensitive);
            if (isset($testValues[$content])) {
                $length = $testLength;
                return true;
            }
        }

        return false;
    }
protected function startsWithAnyLongest(array &$with, $caseSensitive, &$length = null, &$content = null)
    {
        if (empty($with)) {
            return false;
        }

        if (!is_array(reset($with))) {
            usort($with, function ($string1, $string2) {
                return mb_strlen($string2, 'UTF-8') - mb_strlen($string1, 'UTF-8');
            });
            $map = [];
            foreach ($with as $string) {
                $map[mb_strlen($string, 'UTF-8')][$caseSensitive ? $string : mb_strtoupper($string, 'UTF-8')] = true;
            }
            $with = $map;
        }
        foreach ($with as $testLength => $testValues) {
            $content = $this->substring($testLength, $caseSensitive);
            if (isset($testValues[$content])) {
                $length = $testLength;
                return true;
            }
        }

        return false;
    }
Returns whether the longest common prefix equals to the SQL code of the same length at the current offset.
@param string[] $with strings to be tested.
The method **will** modify this parameter to speed up lookups.
@param bool $caseSensitive whether to perform a case sensitive comparison.
@param int|null $length length of the matched string.
@param string|null $content matched string.
@return bool whether a match is found.