dolphin/imdb-dataset-to-mysql/lib/helper.class.php

<?php
/**
 * dolphin. Collection of useful PHP skeletons.
 * Copyright (C) 2013-2020  Johannes 'Banana' Keßler
 *
 * https://www.bananas-playground.net
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the COMMON DEVELOPMENT AND DISTRIBUTION LICENSE
 *
 * You should have received a copy of the
 * COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) Version 1.0
 * along with this program.  If not, see http://www.sun.com/cddl/cddl.html
 */

/**
 * Static helper class
 *
 */
class Helper {

    /**
     * validate the given string with the given type. Optional check the string
     * length
     *
     * @see http://de.php.net/manual/en/regexp.reference.unicode.php
     * http://www.sql-und-xml.de/unicode-database/#pc
     *
     * the pattern replaces all that is allowed. the correct result after
     * the replace should be empty, otherwise are there chars which are not
     * allowed
     *
     * @param string $input The string to check
     * @param string $mode How the string should be checked
     * @param mixed $limit If int given the string is checked for length
     *
     * @return bool
     */
    static function validate($input,$mode='text',$limit=false) {
        // check if we have input
        $input = trim($input);

        if($input == "") return false;

        $ret = false;

        switch ($mode) {
            case 'mail':
                if(filter_var($input,FILTER_VALIDATE_EMAIL) === $input) {
                    return true;
                }
                else {
                    return false;
                }
                break;

            case 'url':
                if(filter_var($input,FILTER_VALIDATE_URL) === $input) {
                    return true;
                }
                else {
                    return false;
                }
                break;

            case 'nospace':
                // text without any whitespace and special chars
                $pattern = '/[\p{L}\p{N}]/u';
                break;

            case 'nospaceP':
                // text without any whitespace and special chars
                // but with Punctuation
                $pattern = '/[\p{L}\p{N}\p{Po}]/u';
                break;

            case 'digit':
                // only numbers and digit
                $pattern = '/[\p{Nd}]/';
                break;

            case 'pageTitle':
                // text with whitespace and without special chars
                // but with Punctuation
                $pattern = '/[\p{L}\p{N}\p{Po}\p{Z}\s]/u';
                break;

            # strange. the \p{M} is needed.. don't know why..
            case 'filename':
                $pattern = '/[\p{L}\p{N}\p{M}\-_\.\p{Zs}]/u';
                break;

            case 'text':
            default:
                $pattern = '/[\p{L}\p{N}\p{P}\p{S}\p{Z}\p{M}\s]/u';
        }

        $value = preg_replace($pattern, '', $input);
        #if($input === $value) {
        if($value === "") {
            $ret = true;
        }

        if(!empty($limit)) {
            # isset starts with 0
            if(isset($input[$limit])) {
                # too long
                $ret = false;
            }
        }

        return $ret;
    }
}