StringUtil.php — Booking for Appointments and Events Calendar – Amelia 1.2.20

ameliabooking / vendor / sabre / vobject / lib / StringUtil.php

ameliabooking / vendor / sabre / vobject / lib Last commit date

StringUtil.php

51 lines

1	<?php
2
3	namespace Sabre\VObject;
4
5	/**
6	* Useful utilities for working with various strings.
7	*
8	* @copyright Copyright (C) fruux GmbH (https://fruux.com/)
9	* @author Evert Pot (http://evertpot.com/)
10	* @license http://sabre.io/license/ Modified BSD License
11	*/
12	class StringUtil
13	{
14	/**
15	* Returns true or false depending on if a string is valid UTF-8.
16	*
17	* @param string $str
18	*
19	* @return bool
20	*/
21	public static function isUTF8($str)
22	{
23	// Control characters
24	if (preg_match('%[\x00-\x08\x0B-\x0C\x0E\x0F]%', $str)) {
25	return false;
26	}
27
28	return (bool) preg_match('%%u', $str);
29	}
30
31	/**
32	* This method tries its best to convert the input string to UTF-8.
33	*
34	* Currently only ISO-5991-1 input and UTF-8 input is supported, but this
35	* may be expanded upon if we receive other examples.
36	*
37	* @param string $str
38	*
39	* @return string
40	*/
41	public static function convertToUTF8($str)
42	{
43	if (!mb_check_encoding($str, 'UTF-8') && mb_check_encoding($str, 'ISO-8859-1')) {
44	$str = mb_convert_encoding($str, 'UTF-8', 'ISO-8859-1');
45	}
46
47	// Removing any control characters
48	return preg_replace('%(?:[\x00-\x08\x0B-\x0C\x0E-\x1F\x7F])%', '', $str);
49	}
50	}
51