是否有一个正则表达式来匹配一个包含或不包含特殊字符的特定字符串？
Like sql database keywords=ال ح مد will match after search highlight=ال ح م د
编辑：我想匹配带有和不带有特殊/重音字符的特定字符串。不仅仅是任何字符串/字符。

function mbStringToArray($string)
    {
        $strlen = mb_strlen($string);
        while($strlen)
        {
            $array[] = mb_substr($string, 0, 1, "UTF-8");
            $string = mb_substr($string, 1, $strlen, "UTF-8");
            $strlen = mb_strlen($string);
        }
        return $array;
    }

    // I had to use this ugly function to remove accents as iconv didn't work properly on my test server.
    function stripAccents($stripAccents){
        return utf8_encode(strtr(utf8_decode($stripAccents),utf8_decode('ِ', 'ُ', 'ٓ', 'ٰ', 'ْ', 'ٌ', 'ٍ', 'ً', 'ّ', 'َ'),''));
    }

    $keywords= 'الحمد';

    $search = '%' . $keywords . '%';
    $stmt = $mysqli->prepare("SELECT * FROM quran WHERE $trans LIKE ?");
    $stmt->bind_param('s', $search);
    $stmt->execute();
    $stmt->store_result();  

    $clientNameNoAccent = stripAccents($clientName);

    $clientNameArray = mbStringToArray($clientName);

    foreach($clientNameArray as $pos => &$char)
    {
        $charNA =$clientNameNoAccent[$pos];
        if($char != $charNA)
        {
            $char = "(?:$char|$charNA|$charNA\p{M})";
        }
    }

    $clientSearchPattern = implode($clientNameArray); // c(?:é|e|e\p{M})ra

    if($stmt->execute()){
            $result = $stmt->get_result();
            while($row = $result->fetch_assoc()){   
            $text = 'الْحَمْدُ لِلَّهِ رَبِّ الْعَالَمِينَ';
            $search = preg_replace('/(.*?)(' . $clientSearchPattern . ')(.*?)/iu', '$1<span class="highlight">$2</span>$3', $text);         
        echo $search;// لِلَّهِ رَبِّ الْعَالَمِينَ<span class="highlight">الْحَمْدُ</span>
        }
    }