てすと | Codetter（こーどったー）

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function parseTextForGroonga ($keyword) {
    $inputKeyword = $keyword;
    $inputKeyword = mb_ereg_replace('',' ',$inputKeyword);
    $inputKeyword = str_getcsv($inputKeyword, ' ', '"');
    
    $searchString = array_shift($inputKeyword);
    $inBooleanMode = false;
    if (count($inputKeyword) > 0) {
        $orFlg = false;
        
        foreach ($inputKeyword as $k) {
            if (strlen($k) < 1) continue;
            
            if ($orFlg == false) {
                if (substr($k,0,1) == '-') {
                    $searchString .= ' ';
                } else if (strtoupper($k) == 'OR') {
                    $searchString .= ' OR ';
                    $orFlg = true;
                    continue;
                } else {
                    $searchString .= ' +';
                }
            } else {
                $orFlg = false;
            }
            
            $searchString .= $k;
            $inBooleanMode = true;
        }
    }
    
    return array('text'=>$searchString,'mode'=>$inBooleanMode);
}
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