Определения языка для комментариев

<?php
error_reporting(E_ALL | E_STRICT); ini_set('display_errors', TRUE); ini_set('display_startup_errors', TRUE);
//echo "<pre>"; var_dump($_POST); echo "</pre>";


echo "<pre>"; var_dump($_SERVER); echo "</pre>";


if(!empty($_POST['text'])){

$text = $_POST['text'];

    // Условия для JS
    if(preg_match('/=\s{0,}[a-z]{1,}\.[a-z]{1,}/ismu', $text) ||
       preg_match('/[a-z]{1,}\.[a-z]{1,}\s{0,}=/ismu', $text) ||
       preg_match('/(\'|\")\+[a-z0-9]{1,}\+(\'|\")/ismu', $text) ||
       preg_match('/var\s{1,}[a-z0-9]{1,}\s{0,}=/ismu', $text) ||
       preg_match('/[a-z]{1,}\.[a-z]{1,}\(/ismu', $text)
       ){
        echo "JS<br>";
    }

    elseif(
        preg_match('/\$[a-z]{1,}/ismu', $text) ||
        preg_match('/[a-z]{1,}\.[a-z]{1,}\s{0,}=/ismu', $text) ||
        preg_match('/(\'|\")\+[a-z0-9]{1,}\+(\'|\")/ismu', $text)
    ){
        echo "PHP<br>";
    }

    elseif(
        preg_match('/<[a-z]{1,}\s{1,}(id|class|href|src|rel|type)\s{0,}=/ismu', $text) ||
        preg_match('/<[a-z]{1,}>[^<>]{1,}<\/[a-z]{1,}>/ismu', $text) ||
        preg_match('/<\s{0,}[a-z]{1,}\s{1,}[a-z]{1,}\s{0,}=\s{0,}(\'|\")[^\"\']{1,}(\'|\")\s{0,}>/ismu', $text)
    ){
        echo "HTML<br>";
    }


    elseif(
        preg_match('/\.[a-z0-9-_]{1,}\s{0,}{\s{0,}[a-z0-9-_]{1,}:/isu', $text) ||
        preg_match('/[a-z0-9-_]{1,}\s{0,}:\s{0,}(hover|active|focus)/ismu', $text) ||
        preg_match('/[a-z0-9-_]{1,}:\s{0,}[a-z0-9-_]{1,};\s{0,}\t{0,}[a-z0-9-_]{1,}:\s{0,}[a-z0-9-_]{1,};/isu', $text)
    ){
        echo "CSS<br>";
    }


    elseif(
        preg_match('/(COUNT\(\*\)|DELETE\s{1,}FROM|INSERT INTO|SELECT\s{1,}AVG|SELECT\s{1,}MAX|SELECT\s{1,}MIN|SELECT\s{1,}DISTINCT|GROUP\s{1,}BY|ORDER\s{1,}BY)/isu', $text) ||
        preg_match('/SELECT\s{0,}(\'|`|)[a-z0-9-_]{1,}(\'|`|)(,|\s{1,}FROM)/isu', $text) ||
        preg_match('/[a-z0-9-_]{1,}:\s{0,}[a-z0-9-_]{1,};\s{0,}\t{0,}[a-z0-9-_]{1,}:\s{0,}[a-z0-9-_]{1,};/isu', $text)
    ){
        echo "SQL<br>";
    }


} // if isset POST


/**
 *
 * var gulp =
 * gulp.dest(
 *
 *
 * HTML
 *
 * 2) <title>Тег AREA</title>
 * 3) <style type="text/css">
**/

?>

<form action="" method="POST">
    <textarea name="text" cols="60" rows="10" class="form-control tools_form"></textarea>
    <br>
    <br>
    <button type="submit" name="add" class="btn btn-success">Запустить скрипт</button>
</form>