1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
<?php
/**
* Provide page/request helper functions
*/
/**
* Parse a date from da day and a time textfield.
*
* @param string $date_name
* Name of the textfield containing the day (format Y-m-d)
* @param string $time_name
* Name of the textfield containing the time (format H:i)
* @param string[] $allowed_days
* List of allowed days in format Y-m-d
* @param int $default_value
* Default value unix timestamp
*/
function check_request_datetime($date_name, $time_name, $allowed_days, $default_value) {
$time = date("H:i", $default_value);
$day = date("Y-m-d", $default_value);
if (isset($_REQUEST[$time_name]) && preg_match('#^\d{1,2}:\d\d$#', trim($_REQUEST[$time_name]))) {
$time = trim($_REQUEST[$time_name]);
}
if (isset($_REQUEST[$date_name]) && in_array($_REQUEST[$date_name], $allowed_days)) {
$day = $_REQUEST[$date_name];
}
return parse_date("Y-m-d H:i", $day . " " . $time);
}
/**
* Parse a date into unix timestamp
*
* @param string $pattern
* The date pattern (i.e. Y-m-d H:i)
* @param string $value
* The string to parse
* @return The parsed unix timestamp
*/
function parse_date($pattern, $value) {
$datetime = DateTime::createFromFormat($pattern, trim($value));
if ($datetime == null) {
return null;
}
return $datetime->getTimestamp();
}
/**
* Leitet den Browser an die übergebene URL weiter und hält das Script an.
*/
function redirect($url) {
header("Location: " . $url, true, 302);
raw_output("");
}
/**
* Echoes given output and dies.
*
* @param String $output
* String to display
*/
function raw_output($output) {
echo $output;
die();
}
/**
* Helper function for transforming list of entities into array for select boxes.
*
* @param array $data
* The data array
* @param string $key_name
* name of the column to use as id/key
* @param string $value_name
* name of the column to use as displayed value
*/
function select_array($data, $key_name, $value_name) {
$ret = [];
foreach ($data as $value) {
$ret[$value[$key_name]] = $value[$value_name];
}
return $ret;
}
/**
* Returns an int[] from given request param name.
*
* @param String $name
* Name of the request param
* @param array<int> $default
* Default return value, if param is not set
*/
function check_request_int_array($name, $default = []) {
if (isset($_REQUEST[$name]) && is_array($_REQUEST[$name])) {
return array_filter($_REQUEST[$name], 'is_numeric');
}
return $default;
}
/**
* Checks if given request item (name) can be parsed to a date.
* If not parsable, given error message is put into msg() and null is returned.
*
* @param string $input
* String to be parsed into a date.
* @param string $error_message
* the error message displayed if $input is not parsable
* @param boolean $null_allowed
* is a null value allowed?
* @return ValidationResult containing the parsed date
*/
function check_request_date($name, $error_message = null, $null_allowed = false) {
if (! isset($_REQUEST[$name])) {
return new ValidationResult($null_allowed, null);
}
return check_date($_REQUEST[$name], $error_message, $null_allowed);
}
/**
* Checks if given string can be parsed to a date.
* If not parsable, given error message is put into msg() and null is returned.
*
* @param string $input
* String to be parsed into a date.
* @param string $error_message
* the error message displayed if $input is not parsable
* @param boolean $null_allowed
* is a null value allowed?
* @return ValidationResult containing the parsed date
*/
function check_date($input, $error_message = null, $null_allowed = false) {
if ($tmp = parse_date("Y-m-d", trim($input))) {
return new ValidationResult(true, $tmp);
}
if ($null_allowed) {
return new ValidationResult(true, null);
}
error($error_message);
return new ValidationResult(false, null);
}
/**
* Returns REQUEST value filtered or default value (null) if not set.
*/
function strip_request_item($name, $default_value = null) {
if (isset($_REQUEST[$name])) {
return strip_item($_REQUEST[$name]);
}
return $default_value;
}
/**
* Testet, ob der angegebene REQUEST Wert ein Integer ist, bzw.
* eine ID sein könnte.
*/
function test_request_int($name) {
if (isset($_REQUEST[$name])) {
return preg_match("/^[0-9]*$/", $_REQUEST[$name]);
}
return false;
}
/**
* Gibt den gefilterten REQUEST Wert mit Zeilenumbrüchen zurück
*/
function strip_request_item_nl($name, $default_value = null) {
if (isset($_REQUEST[$name])) {
return preg_replace("/([^\p{L}\p{S}\p{P}\p{Z}\p{N}+\n]{1,})/ui", '', strip_tags($_REQUEST[$name]));
}
return $default_value;
}
/**
* Entfernt unerwünschte Zeichen
*/
function strip_item($item) {
return preg_replace("/([^\p{L}\p{S}\p{P}\p{Z}\p{N}+]{1,})/ui", '', strip_tags($item));
}
/**
* Überprüft eine E-Mail-Adresse.
*/
function check_email($email) {
return (bool) filter_var($email, FILTER_VALIDATE_EMAIL);
}
class ValidationResult {
private $valid;
private $value;
/**
* Constructor.
*
* @param boolean $valid
* Is the value valid?
* @param * $value
* The validated value
*/
public function ValidationResult($valid, $value) {
$this->valid = $valid;
$this->value = $value;
}
/**
* Is the value valid?
*/
public function isValid() {
return $this->valid;
}
/**
* The parsed/validated value.
*/
public function getValue() {
return $this->value;
}
}
?>
|
