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
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
| <?php
/**
* api: php7
* title: fluent curl
* description: simple wrapper around curl functions
* version: 0.3
* license: Public Domain
*
*
* This simple wrapper class and its factory function allow
* compact invocations of curl. You can pass either just an
* URL, an option array, a previously wrapped curl() or a
* raw curl resource handle.
* Methods and options (CURL_ constants) lose their prefix
* once wrapped, and can be easily chained:
*
* curl($url)->followlocation(1)->verbose(1)->exec();
*
* Option names are case-insensitive too. The exec() and any
* setting retrieval terminate the fluent call.
*
*
* Individual curl() wrappers can also be combined into a
* parallel-request curl_multi() instance:
*
* curl_multi($url1, $url2, $url3)->verbose(1)->exec();
*
* Here the handles may be passed as associative array or
* indexed list. exec() will wait until all finish, then
* directly return an array of result contents.
* In-between option calls are applied to all bound handles.
*
*/
# hybrid constructor
function curl($url=NULL) {
return is_a($url, "curl") ? $url : new curl($url);
}
/**
* Fluent curl wrapper which obviates CURL_ prefixes.
*
* Makes curl_functions available as methods. Previous constants
* are easily accessible through chainable method calls as well.
* Only getinfo() options are mapped as virtual properties.
*
*/
class curl {
/**
* resource / curl handle
*
*/
public $handle = NULL;
/**
* Setup parameters.
*
*/
static $defaults = array(
"returntransfer" => 1,
"httpget" => 1,
"http200aliases" => array(200, 201, 202, 203),
"header" => 0,
);
/**
* Some checks before returning the resulting content.
*
*/
public $assert = array();
/**
* Initialize, where $params is usually just an $url, or an [OPT=>val] list
*
*/
function __construct($params) {
// create
$this->handle = is_object($params) ? $params : curl_init();
// merge options
$params = array_merge(
curl::$defaults,
array("followlocation" => !ini_get("safe_mode")),
is_array($params) ? array_change_key_case($params) : array(),
is_string($params) ? array("url" => $params) : array()
);
// multiple [url=>$url, post=>$bool, ..] options
if (is_array($params)) foreach ($params as $cmd=>$opt) {
$this->__call($cmd, array($opt));
}
}
/**
* Most invocations are mapped onto CURL_CONST settings,
* while some are just plain function calls:
*
* @method exec()
* @method errno()
* @method error()
* @method getinfo()
*/
function __call($opt, $args) {
# CURLOPT_*** constant
if (defined($const = "CURLOPT_" . strtoupper($opt))) {
curl_setopt($this->handle, constant($const), $args[0]);
}
# curl_action function
elseif (function_exists($func = "curl_$opt")) {
return call_user_func_array($func, array_merge(array($this->handle), $args));
}
# neither exists
else {
trigger_error("curl: unknown '$opt' option", E_USER_ERROR);
}
return $this;
}
/**
* Append result-checks such as ["HTTP_CODE" => [200, 201]].
*
*/
function assert($list) {
$this->assert += $list;
return $this;
}
/**
* Wrap exec() to test result handle for HTTP or CURL properties.
*
*/
function exec() {
$args = func_get_args();
$content = $this->__call("exec", $args);
foreach ($this->assert as $option => $values) {
if (!in_array($this->$option, $values)) {
return NULL;
}
}
return $content;
}
/**
* retrieve constants
*
*/
function __get($opt) {
// @implicit error message from constant() for non-existant symbols
return curl_getinfo($this->handle, constant($const = "CURLINFO_" . strtoupper($opt)));
}
}
# hybrid constructor
function curl_multi($url=NULL) {
return new curl_multi($url);
}
/**
* Associative handler for multiple concurrent curl requests.
* Not so fluent.
*
*/
class curl_multi {
/**
* Indexed or associative list
*
*/
public $list = array();
/**
* Multi-handle
*
*/
public $mh = NULL;
/**
* Bind list of curl handles.
*
* An associative array can be passed here, either of prepared curl() handles,
* just URLs, or an curl option array each.
*
*/
function __construct($list) {
// optionally get indexed params as list
if (func_num_args() >= 2) {
$list = func_get_args();
}
// auto-wrap curl() handlers
$list = array_map("curl", $list);
// copy handle list
$this->list = $list;
// bind actual curl handles
$this->mh = curl_multi_init();
foreach ($list as $cw) {
curl_multi_add_handle($this->mh, $cw->handle);
}
}
/**
* Run until all individual curl() handles are finished.
*
* Implicitly returns a list of result contents (associative array as well).
*
*/
function exec($timeout=1.50, $t=0.0, $running=1) {
// process within timeframe
while (($timeout > $t += $timeout/50) and $running) {
curl_multi_exec($this->mh, $running);
curl_multi_select($this->mh, $timeout/50);
}
// fetch results, then close handles
return $this->close( $this->getcontent() );
}
/**
* Retrieve results, associative array.
*
*/
function getcontent() {
return array_map("curl_multi_getcontent", array_map("current",/*retrieve first property (->handle) each*/ $this->list));
}
/**
* Close all curl() handles in $list, and the curl-multi wrapper.
*
*/
function close($r=NULL) {
$this->__call("close", array());
curl_multi_close($this->mh);
return $r;
}
/**
* Applies options on each curl handle.
*
*/
function __call($opt, $args) {
foreach ($this->list as $cw) {
$cw->__call($opt, $args);
}
}
}
?>
|