Email Extractor

<?php
trait Email {
    public function _h(){
        $h[] = "\t Email Extractor V.1";
        $h[] = "\t Code By ZakirDotID";
        $h[] = "\t Don`t Change CopyRight!";
        $head = implode("\n", $h);
        return $head;
    }
    public static function _v($email){
        if (filter_var($email,FILTER_VALIDATE_EMAIL)) {
            return true;
        } else {
            return false;
        }
    }
    public static function run(){
        echo self::_h();
        echo "\n\t Input File : ";
        $file = trim(fgets(STDIN));
        $files = file_get_contents($file) or exit("\nError Fatal!\n");
        $ext = explode(".", $file);
        $email = explode("\r\n", $files);
        if ($ext[1] == "csv") {
        self::_csv($file);
        } else {
        echo "Found ( ".count($email)." )\n ";
            foreach ($email as $data) {
            echo "[+] $data \n";
            self::save("email.log",$data);
            }
        }
    }
    public static function _csv($file){
    $target = fopen($file, 'r');
    while($baris = fgetcsv($target, 0, ';')){
        for($i=0,$kolom=count($baris); $i<$kolom; $i++){
            if (self::_v($baris[$i]) == true) {
                echo " [+] $baris[$i] \n";
                self::save("email.log",$baris[$i]);
            } else {
                // Error Tidak Valid
            }

        }
    }
        fclose($target);
    }
    public static function save($file,$data){
        $fp = @fopen(date("d").$file, "a+");
        fwrite($fp, $data."\r\n");
        fclose($fp);
    }

}
Email::run();