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Edit File: Validate.php

<?php

namespace Cleantalk\Common;

class Validate
{
    /**
     * Runs validation for input parameter
     *
     * Now contains filters: hash
     *
     * @param mixed $variable Input to validate
     * @param string $filter_name Validation filter name
     *
     * @return bool
     */
    public static function validate($variable, $filter_name)
    {
        switch ( $filter_name ) {
            case 'hash':
                return static::isHash($variable);
            case 'int':
                return static::isInt($variable);
            case 'float':
                return static::isFloat($variable);
            case 'word':
                return static::isWord($variable);
            case 'isUrl':
                return static::isUrl($variable);
        }

return false;
    }

/**
     * Simple method: validate hash
     */
    public static function isHash($variable)
    {
        return preg_match('#^[a-zA-Z0-9]{8,128}$#', $variable) === 1;
    }

/**
     * Simple method: validate int
     */
    public static function isInt($variable)
    {
        return preg_match('#^\d+$#', $variable) === 1;
    }

/**
     * Simple method: validate float
     */
    public static function isFloat($variable)
    {
        return preg_match('#^[\d.]+\d+$#', $variable) === 1;
    }

/**
     * Simple method: validate word
     */
    public static function isWord($variable)
    {
        return preg_match('#^[a-zA-Z0-9_.\-,]+$#', $variable);
    }

/**
     * Simple method: validate email
     */
    public static function isEmail($variable)
    {
        // TODO
    }

/**
     * Simple method: validate file path (not exists)
     */
    public static function isValidFilePath($variable)
    {
        // TODO
    }

public static function isUrl($url)
    {
        return ( strpos($url, 'http://') !== false || strpos($url, 'https://') !== false ) &&
               filter_var($url, FILTER_VALIDATE_URL);
    }

/**
     * Checks if given string is valid regular expression
     *
     * @param string $regexp
     *
     * @return bool
     */
    public static function isRegexp($regexp)
    {
        return @preg_match('/' . $regexp . '/', '') !== false;
    }

/**
     * Check if the string is encoded by urlencode()
     *
     * @param $value
     *
     * @return bool
     */
    public static function isUrlencoded($value)
    {
        return urlencode(urldecode($value)) === $value;
    }
}

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