fluentform / boot / MbstringFallback.php

MbstringFallback.php in Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder 6.2.12, at boot/MbstringFallback.php

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1	<?php
2
3	/**
4	* Plain-PHP fallbacks for mb_* functions when mbstring extension is missing.
5	*
6	* These handle ASCII correctly, which is sufficient for the framework's
7	* internal use (route matching, snake/camel case, validator attribute parsing).
8	*
9	* WordPress already polyfills mb_strlen and mb_substr via wp-includes/compat.php.
10	* This file covers the remaining functions the framework and plugin use.
11	*
12	* When mbstring IS loaded, this file does nothing.
13	*/
14
15	if (extension_loaded('mbstring')) {
16	return;
17	}
18
19	if (!defined('MB_CASE_UPPER')) {
20	define('MB_CASE_UPPER', 0);
21	}
22
23	if (!defined('MB_CASE_LOWER')) {
24	define('MB_CASE_LOWER', 1);
25	}
26
27	if (!defined('MB_CASE_TITLE')) {
28	define('MB_CASE_TITLE', 2);
29	}
30
31	if (!function_exists('mb_strlen')) {
32	function mb_strlen($string, $encoding = null)
33	{
34	return strlen($string);
35	}
36	}
37
38	if (!function_exists('mb_substr')) {
39	function mb_substr($string, $start, $length = null, $encoding = null)
40	{
41	return $length === null ? substr($string, $start) : substr($string, $start, $length);
42	}
43	}
44
45	if (!function_exists('mb_strtolower')) {
46	function mb_strtolower($string, $encoding = null)
47	{
48	return strtolower($string);
49	}
50	}
51
52	if (!function_exists('mb_strtoupper')) {
53	function mb_strtoupper($string, $encoding = null)
54	{
55	return strtoupper($string);
56	}
57	}
58
59	if (!function_exists('mb_strpos')) {
60	function mb_strpos($haystack, $needle, $offset = 0, $encoding = null)
61	{
62	return strpos($haystack, $needle, $offset);
63	}
64	}
65
66	if (!function_exists('mb_strrpos')) {
67	function mb_strrpos($haystack, $needle, $offset = 0, $encoding = null)
68	{
69	return strrpos($haystack, $needle, $offset);
70	}
71	}
72
73	if (!function_exists('mb_strwidth')) {
74	function mb_strwidth($string, $encoding = null)
75	{
76	return strlen($string);
77	}
78	}
79
80	if (!function_exists('mb_strimwidth')) {
81	function mb_strimwidth($string, $start, $width, $trimmarker = '', $encoding = null)
82	{
83	$string = substr($string, $start);
84
85	if (strlen($string) <= $width) {
86	return $string;
87	}
88
89	$markerLen = strlen($trimmarker);
90
91	return substr($string, 0, $width - $markerLen) . $trimmarker;
92	}
93	}
94
95	if (!function_exists('mb_convert_case')) {
96	function mb_convert_case($string, $mode, $encoding = null)
97	{
98	switch ($mode) {
99	case MB_CASE_UPPER:
100	return strtoupper($string);
101	case MB_CASE_LOWER:
102	return strtolower($string);
103	case MB_CASE_TITLE:
104	return ucwords(strtolower($string));
105	default:
106	return $string;
107	}
108	}
109	}
110
111	if (!function_exists('mb_str_split')) {
112	function mb_str_split($string, $length = 1, $encoding = null)
113	{
114	return str_split($string, $length);
115	}
116	}
117
118	if (!function_exists('mb_split')) {
119	function mb_split($pattern, $string, $limit = -1)
120	{
121	return preg_split('/' . $pattern . '/u', $string, $limit);
122	}
123	}
124