<!-- this script is provided by https://www.phpfreecode.com coded by: Kerixa Inc. -->
<?php

class BadWords_Funcs{


    public static $badWords = [];

    static function __constructStatic(){

        $fp = fopen("https://www.cs.cmu.edu/~biglou/resources/bad-words.txt", "r");
        
        if($fp){

            while(($line = fgets($fp)) !== false){
                array_push(self::$badWords, trim($line, "\t\n\r"));
            }

            if(!feof($fp)){
                echo "Unexpected fgets() error encountered.";
            }

            fclose($fp);
        }
    }

    static function get_badWords(){
        return self::$badWords;
    }

    static function filteredString($sentence){

        $pattern = ".+*^$\(\)\[\]\?&@#'\"! \n\t\r";
        $sentencedArray = preg_split("/([".$pattern."])/", $sentence, -1, PREG_SPLIT_DELIM_CAPTURE);
        $newArray = [];
  
        for($i = 0; $i < count($sentencedArray); $i++){

            $word = $sentencedArray[$i];
            $filtered_word = $word;

            for($j = 0; $j < count(self::$badWords); $j++){

                // bad-word detected, filter and break inner loop for next bad-word
                $badword = self::$badWords[$j];

                if(strcasecmp(strtolower($badword), strtolower($word)) === 0){

                    $badword_length = strlen($badword);
                    $firstLetter = substr($word, 0, 1);
                    $filtered_word = "";
                    $filtered_word .= $firstLetter;

                    // short bad-word
                    if($badword_length < 3){

                        for($k = 0; $k < $badword_length - 1; $k++){
                            $filtered_word .= "*";
                        }
                    }
                    
                    // long bad-word
                    else{
                        $lastLetter = substr($word, -1);

                        for($k = 0; $k < $badword_length - 2; $k++){
                            $filtered_word .= "*";
                        }

                        $filtered_word .= $lastLetter;
                    }

                    break;
                }
            }

            array_push($newArray, $filtered_word);
        }

        return implode("", $newArray);
    }
}

?><a target='_blank' href='https://www.phpfreecode.com' style='font-size: 8pt; text-decoration: none'>Php Best Codes</a>