testprojekt/rss/php/classes/core/Validator.php

<?php

namespace Vor\core;

class Validator{

    public static function int($val) : bool{
        return filter_var($val, FILTER_VALIDATE_INT) !== false;
    }

    public static function float($val) : bool{
        return filter_var($val, FILTER_VALIDATE_FLOAT) !== false;
    }

    public static function string($val, int $minLen = 1): bool{
        if(!is_string($val)){
            return false;
        }

        return mb_strlen(trim($val)) >= $minLen;
    }

    public static function date($date, string $format = 'Y-m-d'): bool {
        try{
            $d = \DateTime::createFromFormat($format, (string)$date);
            return $d && $d->format($format) === (string)$date;
        }catch(\Throwable $e){
            error_log($e->getMessage());
            return false;
        }
    }

    public static function json($val): bool{
        if(!is_string($val) || $val === ''){
            return false;
        }

        try{
            json_decode($val, true, 512, JSON_THROW_ON_ERROR);
            return true;
        }catch(\JsonException $e){
            error_log($e->getMessage());
            return false;
        }
    }

    public static function email($val): bool{
        $val = trim((string)$val);

        if(preg_match("/[\r\n]/", $val)){
            return false;
        }

        return (bool) filter_var($val, FILTER_VALIDATE_EMAIL);
    }

    public static function domain($val): bool{
        $val = trim((string)$val);

        if(preg_match("/[\r\n]/", $val)){
            return false;
        }

        return (bool) filter_var($val, FILTER_VALIDATE_DOMAIN, FILTER_FLAG_HOSTNAME);
    }

    public static function minLen($val, int $min): bool{
        return mb_strlen(trim((string)$val)) >= $min;
    }

    public static function maxLen($val, int $max): bool{
        return mb_strlen(trim((string)$val)) <= $max;
    }

    public static function regex($val, string $pattern): bool{
        return (bool) preg_match($pattern, (string)$val);
    }
}