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1 | <?php |
2 | |
3 | /** |
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4 | * global.php |
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5 | * |
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6 | * This includes code to update < 4.1.0 globals to the newer format |
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7 | * It also has some session register functions that work across various |
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8 | * php versions. |
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9 | * |
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10 | * @copyright © 1999-2007 The SquirrelMail Project Team |
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11 | * @license http://opensource.org/licenses/gpl-license.php GNU Public License |
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12 | * @version $Id$ |
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13 | * @package squirrelmail |
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14 | */ |
15 | |
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16 | /** |
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17 | */ |
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18 | define('SQ_INORDER',0); |
19 | define('SQ_GET',1); |
20 | define('SQ_POST',2); |
21 | define('SQ_SESSION',3); |
22 | define('SQ_COOKIE',4); |
23 | define('SQ_SERVER',5); |
24 | define('SQ_FORM',6); |
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25 | |
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26 | |
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27 | /** |
28 | * returns true if current php version is at mimimum a.b.c |
29 | * |
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30 | * Called: check_php_version(4,1) |
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31 | * @param int a major version number |
32 | * @param int b minor version number |
33 | * @param int c release number |
34 | * @return bool |
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35 | */ |
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36 | function check_php_version ($a = '0', $b = '0', $c = '0') |
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37 | { |
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38 | return version_compare ( PHP_VERSION, "$a.$b.$c", 'ge' ); |
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39 | } |
40 | |
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41 | /** |
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42 | * returns true if the current internal SM version is at minimum a.b.c |
43 | * These are plain integer comparisons, as our internal version is |
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44 | * constructed by us, as an array of 3 ints. |
45 | * |
46 | * Called: check_sm_version(1,3,3) |
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47 | * @param int a major version number |
48 | * @param int b minor version number |
49 | * @param int c release number |
50 | * @return bool |
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51 | */ |
52 | function check_sm_version($a = 0, $b = 0, $c = 0) |
53 | { |
54 | global $SQM_INTERNAL_VERSION; |
55 | if ( !isset($SQM_INTERNAL_VERSION) || |
56 | $SQM_INTERNAL_VERSION[0] < $a || |
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57 | ( $SQM_INTERNAL_VERSION[0] == $a && |
58 | $SQM_INTERNAL_VERSION[1] < $b) || |
59 | ( $SQM_INTERNAL_VERSION[0] == $a && |
60 | $SQM_INTERNAL_VERSION[1] == $b && |
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61 | $SQM_INTERNAL_VERSION[2] < $c ) ) { |
62 | return FALSE; |
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63 | } |
64 | return TRUE; |
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65 | } |
66 | |
67 | |
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68 | /** |
69 | * Recursively strip slashes from the values of an array. |
70 | * @param array array the array to strip, passed by reference |
71 | * @return void |
72 | */ |
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73 | function sqstripslashes(&$array) { |
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74 | if(count($array) > 0) { |
75 | foreach ($array as $index=>$value) { |
76 | if (is_array($array[$index])) { |
77 | sqstripslashes($array[$index]); |
78 | } |
79 | else { |
80 | $array[$index] = stripslashes($value); |
81 | } |
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82 | } |
83 | } |
84 | } |
85 | |
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86 | /** |
87 | * Add a variable to the session. |
88 | * @param mixed $var the variable to register |
89 | * @param string $name the name to refer to this variable |
90 | * @return void |
91 | */ |
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92 | function sqsession_register ($var, $name) { |
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93 | |
94 | sqsession_is_active(); |
95 | |
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96 | $_SESSION["$name"] = $var; |
97 | |
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98 | session_register("$name"); |
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99 | } |
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100 | |
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101 | /** |
102 | * Delete a variable from the session. |
103 | * @param string $name the name of the var to delete |
104 | * @return void |
105 | */ |
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106 | function sqsession_unregister ($name) { |
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107 | |
108 | sqsession_is_active(); |
109 | |
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110 | unset($_SESSION[$name]); |
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111 | |
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112 | session_unregister("$name"); |
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113 | } |
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114 | |
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115 | /** |
116 | * Checks to see if a variable has already been registered |
117 | * in the session. |
118 | * @param string $name the name of the var to check |
119 | * @return bool whether the var has been registered |
120 | */ |
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121 | function sqsession_is_registered ($name) { |
122 | $test_name = &$name; |
123 | $result = false; |
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124 | |
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125 | if (isset($_SESSION[$test_name])) { |
126 | $result = true; |
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127 | } |
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128 | |
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129 | return $result; |
130 | } |
131 | |
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132 | |
133 | /** |
134 | * Retrieves a form variable, from a set of possible similarly named |
135 | * form variables, based on finding a different, single field. This |
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136 | * is intended to allow more than one same-named inputs in a single |
137 | * <form>, where the submit button that is clicked tells us which |
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138 | * input we should retrieve. An example is if we have: |
139 | * <select name="startMessage_1"> |
140 | * <select name="startMessage_2"> |
141 | * <input type="submit" name="form_submit_1"> |
142 | * <input type="submit" name="form_submit_2"> |
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143 | * and we want to know which one of the select inputs should be |
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144 | * returned as $startMessage (without the suffix!), this function |
145 | * decides by looking for either "form_submit_1" or "form_submit_2" |
146 | * (both should not appear). In this example, $name should be |
147 | * "startMessage" and $indicator_field should be "form_submit". |
148 | * |
149 | * NOTE that form widgets must be named with the suffix "_1", "_2", "_3" |
150 | * and so on, or this function will not work. |
151 | * |
152 | * If more than one of the indicator fields is found, the first one |
153 | * (numerically) will win. |
154 | * |
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155 | * If an indicator field is found without a matching input ($name) |
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156 | * field, FALSE is returned. |
157 | * |
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158 | * If no indicator fields are found, a field of $name *without* any |
159 | * suffix is searched for (but only if $fallback_no_suffix is TRUE), |
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160 | * and if not found, FALSE is ultimately returned. |
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161 | * |
162 | * It should also be possible to use the same string for both |
163 | * $name and $indicator_field to look for the first possible |
164 | * widget with a suffix that can be found (and possibly fallback |
165 | * to a widget without a suffix). |
166 | * |
167 | * @param string name the name of the var to search |
168 | * @param mixed value the variable to return |
169 | * @param string indicator_field the name of the field upon which to base |
170 | * our decision upon (see above) |
171 | * @param int search constant defining where to look |
172 | * @param bool fallback_no_suffix whether or not to look for $name with |
173 | * no suffix when nothing else is found |
174 | * @param mixed default the value to assign to $value when nothing is found |
175 | * @param int typecast force variable to be cast to given type (please |
176 | * use SQ_TYPE_XXX constants or set to FALSE (default) |
177 | * to leave variable type unmolested) |
178 | * |
179 | * @return bool whether variable is found. |
180 | */ |
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181 | function sqGetGlobalVarMultiple($name, &$value, $indicator_field, |
182 | $search = SQ_INORDER, |
183 | $fallback_no_suffix=TRUE, $default=NULL, |
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184 | $typecast=FALSE) { |
185 | |
1793f985 |
186 | // Set arbitrary max limit -- should be much lower except on the |
187 | // search results page, if there are many (50 or more?) mailboxes |
188 | // shown, this may not be high enough. Is there some way we should |
189 | // automate this value? |
190 | // |
191 | $max_form_search = 100; |
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192 | |
193 | for ($i = 1; $i <= $max_form_search; $i++) { |
194 | if (sqGetGlobalVar($indicator_field . '_' . $i, $temp, $search)) { |
195 | return sqGetGlobalVar($name . '_' . $i, $value, $search, $default, $typecast); |
196 | } |
197 | } |
198 | |
199 | |
200 | // no indicator field found; just try without suffix if allowed |
201 | // |
202 | if ($fallback_no_suffix) { |
203 | return sqGetGlobalVar($name, $value, $search, $default, $typecast); |
204 | } |
205 | |
206 | |
207 | // no dice, set default and return FALSE |
208 | // |
209 | if (!is_null($default)) { |
210 | $value = $default; |
211 | } |
212 | return FALSE; |
213 | |
214 | } |
215 | |
216 | |
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217 | /** |
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218 | * Search for the var $name in $_SESSION, $_POST, $_GET, $_COOKIE, or $_SERVER |
219 | * and set it in provided var. |
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220 | * |
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221 | * If $search is not provided, or if it is SQ_INORDER, it will search $_SESSION, |
222 | * then $_POST, then $_GET. If $search is SQ_FORM it will search $_POST and |
223 | * $_GET. Otherwise, use one of the defined constants to look for a var in one |
224 | * place specifically. |
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225 | * |
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226 | * Note: $search is an int value equal to one of the constants defined above. |
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227 | * |
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228 | * Example: |
229 | * sqgetGlobalVar('username',$username,SQ_SESSION); |
230 | * // No quotes around last param, it's a constant - not a string! |
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231 | * |
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232 | * @param string name the name of the var to search |
233 | * @param mixed value the variable to return |
234 | * @param int search constant defining where to look |
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235 | * @param mixed default the value to assign to $value when nothing is found |
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236 | * @param int typecast force variable to be cast to given type (please |
237 | * use SQ_TYPE_XXX constants or set to FALSE (default) |
238 | * to leave variable type unmolested) |
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239 | * |
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240 | * @return bool whether variable is found. |
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241 | */ |
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242 | function sqgetGlobalVar($name, &$value, $search = SQ_INORDER, $default = NULL, $typecast = false) { |
243 | |
244 | $result = false; |
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245 | |
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246 | switch ($search) { |
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247 | /* we want the default case to be first here, |
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248 | so that if a valid value isn't specified, |
249 | all three arrays will be searched. */ |
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250 | default: |
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251 | case SQ_INORDER: // check session, post, get |
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252 | case SQ_SESSION: |
253 | if( isset($_SESSION[$name]) ) { |
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254 | $value = $_SESSION[$name]; |
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255 | $result = TRUE; |
256 | break; |
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257 | } elseif ( $search == SQ_SESSION ) { |
258 | break; |
259 | } |
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260 | case SQ_FORM: // check post, get |
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261 | case SQ_POST: |
262 | if( isset($_POST[$name]) ) { |
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263 | $value = $_POST[$name]; |
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264 | $result = TRUE; |
265 | break; |
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266 | } elseif ( $search == SQ_POST ) { |
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267 | break; |
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268 | } |
269 | case SQ_GET: |
270 | if ( isset($_GET[$name]) ) { |
271 | $value = $_GET[$name]; |
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272 | $result = TRUE; |
273 | break; |
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274 | } |
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275 | /* NO IF HERE. FOR SQ_INORDER CASE, EXIT after GET */ |
276 | break; |
277 | case SQ_COOKIE: |
278 | if ( isset($_COOKIE[$name]) ) { |
279 | $value = $_COOKIE[$name]; |
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280 | $result = TRUE; |
281 | break; |
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282 | } |
283 | break; |
284 | case SQ_SERVER: |
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285 | if ( isset($_SERVER[$name]) ) { |
286 | $value = $_SERVER[$name]; |
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287 | $result = TRUE; |
288 | break; |
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289 | } |
290 | break; |
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291 | } |
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292 | if ($result && $typecast) { |
293 | switch ($typecast) { |
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294 | case SQ_TYPE_INT: $value = (int) $value; break; |
295 | case SQ_TYPE_STRING: $value = (string) $value; break; |
296 | case SQ_TYPE_BOOL: $value = (bool) $value; break; |
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297 | default: break; |
298 | } |
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299 | } else if (!$result && !is_null($default)) { |
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300 | $value = $default; |
301 | } |
302 | return $result; |
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303 | } |
304 | |
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305 | /** |
306 | * Deletes an existing session, more advanced than the standard PHP |
307 | * session_destroy(), it explicitly deletes the cookies and global vars. |
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308 | * |
309 | * WARNING: Older PHP versions have some issues with session management. |
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310 | * See http://bugs.php.net/11643 (warning, spammed bug tracker) and |
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311 | * http://bugs.php.net/13834. SID constant is not destroyed in PHP 4.1.2, |
68a7e1d6 |
312 | * 4.2.3 and maybe other versions. If you restart session after session |
313 | * is destroyed, affected PHP versions produce PHP notice. Bug should |
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314 | * be fixed only in 4.3.0 |
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315 | */ |
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316 | function sqsession_destroy() { |
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317 | |
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318 | /* |
319 | * php.net says we can kill the cookie by setting just the name: |
320 | * http://www.php.net/manual/en/function.setcookie.php |
321 | * maybe this will help fix the session merging again. |
322 | * |
323 | * Changed the theory on this to kill the cookies first starting |
324 | * a new session will provide a new session for all instances of |
325 | * the browser, we don't want that, as that is what is causing the |
326 | * merging of sessions. |
327 | */ |
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328 | |
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329 | global $base_uri; |
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330 | |
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331 | if (isset($_COOKIE[session_name()]) && session_name()) sqsetcookie(session_name(), '', 0, $base_uri); |
332 | if (isset($_COOKIE['username']) && $_COOKIE['username']) sqsetcookie('username','',0,$base_uri); |
333 | if (isset($_COOKIE['key']) && $_COOKIE['key']) sqsetcookie('key','',0,$base_uri); |
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334 | |
335 | $sessid = session_id(); |
336 | if (!empty( $sessid )) { |
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337 | $_SESSION = array(); |
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338 | @session_destroy(); |
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339 | } |
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340 | } |
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341 | |
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342 | /** |
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343 | * Function to verify a session has been started. If it hasn't |
344 | * start a session up. php.net doesn't tell you that $_SESSION |
345 | * (even though autoglobal), is not created unless a session is |
346 | * started, unlike $_POST, $_GET and such |
347 | */ |
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348 | function sqsession_is_active() { |
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349 | $sessid = session_id(); |
350 | if ( empty( $sessid ) ) { |
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351 | sqsession_start(); |
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352 | } |
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353 | } |
354 | |
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355 | /** |
356 | * Function to start the session and store the cookie with the session_id as |
357 | * HttpOnly cookie which means that the cookie isn't accessible by javascript |
358 | * (IE6 only) |
359 | */ |
360 | function sqsession_start() { |
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361 | global $base_uri; |
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362 | |
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363 | session_start(); |
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364 | $session_id = session_id(); |
365 | |
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366 | // session_starts sets the sessionid cookie buth without the httponly var |
367 | // setting the cookie again sets the httponly cookie attribute |
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368 | sqsetcookie(session_name(),$session_id,false,$base_uri); |
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369 | } |
370 | |
371 | |
372 | /** |
373 | * Set a cookie |
374 | * @param string $sName The name of the cookie. |
375 | * @param string $sValue The value of the cookie. |
376 | * @param int $iExpire The time the cookie expires. This is a Unix timestamp so is in number of seconds since the epoch. |
377 | * @param string $sPath The path on the server in which the cookie will be available on. |
378 | * @param string $sDomain The domain that the cookie is available. |
379 | * @param boolean $bSecure Indicates that the cookie should only be transmitted over a secure HTTPS connection. |
380 | * @param boolean $bHttpOnly Disallow JS to access the cookie (IE6 only) |
381 | * @return void |
382 | */ |
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383 | function sqsetcookie($sName,$sValue="deleted",$iExpire=0,$sPath="",$sDomain="",$bSecure=false,$bHttpOnly=true) { |
68a7e1d6 |
384 | // if we have a secure connection then limit the cookies to https only. |
385 | if ($sName && isset($_SERVER['HTTPS']) && $_SERVER['HTTPS']) { |
386 | $bSecure = true; |
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387 | } |
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388 | if (false && check_php_version(5,2)) { |
389 | // php 5 supports the httponly attribute in setcookie, but because setcookie seems a bit |
390 | // broken we use the header function for php 5.2 as well. We might change that later. |
391 | //setcookie($sName,$sValue,(int) $iExpire,$sPath,$sDomain,$bSecure,$bHttpOnly); |
392 | } else { |
393 | if (!empty($Domain)) { |
394 | // Fix the domain to accept domains with and without 'www.'. |
395 | if (strtolower(substr($Domain, 0, 4)) == 'www.') $Domain = substr($Domain, 4); |
396 | $Domain = '.' . $Domain; |
397 | |
398 | // Remove port information. |
399 | $Port = strpos($Domain, ':'); |
400 | if ($Port !== false) $Domain = substr($Domain, 0, $Port); |
401 | } |
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402 | if (!$sValue) $sValue = 'deleted'; |
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403 | header('Set-Cookie: ' . rawurlencode($sName) . '=' . rawurlencode($sValue) |
404 | . (empty($iExpires) ? '' : '; expires=' . gmdate('D, d-M-Y H:i:s', $iExpires) . ' GMT') |
405 | . (empty($sPath) ? '' : '; path=' . $sPath) |
406 | . (empty($sDomain) ? '' : '; domain=' . $sDomain) |
407 | . (!$bSecure ? '' : '; secure') |
408 | . (!$bHttpOnly ? '' : '; HttpOnly'), false); |
409 | } |
202bcbcc |
410 | } |
411 | |
412 | /** |
413 | * session_regenerate_id replacement for PHP < 4.3.2 |
414 | * |
415 | * This code is borrowed from Gallery, session.php version 1.53.2.1 |
416 | */ |
417 | if (!function_exists('session_regenerate_id')) { |
418 | function make_seed() { |
419 | list($usec, $sec) = explode(' ', microtime()); |
420 | return (float)$sec + ((float)$usec * 100000); |
421 | } |
422 | |
423 | function php_combined_lcg() { |
424 | mt_srand(make_seed()); |
425 | $tv = gettimeofday(); |
426 | $lcg['s1'] = $tv['sec'] ^ (~$tv['usec']); |
427 | $lcg['s2'] = mt_rand(); |
428 | $q = (int) ($lcg['s1'] / 53668); |
429 | $lcg['s1'] = (int) (40014 * ($lcg['s1'] - 53668 * $q) - 12211 * $q); |
430 | if ($lcg['s1'] < 0) { |
431 | $lcg['s1'] += 2147483563; |
432 | } |
433 | $q = (int) ($lcg['s2'] / 52774); |
434 | $lcg['s2'] = (int) (40692 * ($lcg['s2'] - 52774 * $q) - 3791 * $q); |
435 | if ($lcg['s2'] < 0) { |
436 | $lcg['s2'] += 2147483399; |
437 | } |
438 | $z = (int) ($lcg['s1'] - $lcg['s2']); |
439 | if ($z < 1) { |
440 | $z += 2147483562; |
441 | } |
442 | return $z * 4.656613e-10; |
443 | } |
3a1de9f1 |
444 | |
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445 | function session_regenerate_id() { |
446 | global $base_uri; |
447 | $tv = gettimeofday(); |
448 | sqgetGlobalVar('REMOTE_ADDR',$remote_addr,SQ_SERVER); |
449 | $buf = sprintf("%.15s%ld%ld%0.8f", $remote_addr, $tv['sec'], $tv['usec'], php_combined_lcg() * 10); |
450 | session_id(md5($buf)); |
451 | if (ini_get('session.use_cookies')) { |
452 | // at a later stage we use sqsetcookie. At this point just do |
453 | // what session_regenerate_id would do |
454 | setcookie(session_name(), session_id(), NULL, $base_uri); |
455 | } |
456 | return TRUE; |
457 | } |
3a1de9f1 |
458 | } |
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459 | |
202bcbcc |
460 | |
7f62aaef |
461 | /** |
462 | * php_self |
463 | * |
464 | * Creates an URL for the page calling this function, using either the PHP global |
465 | * REQUEST_URI, or the PHP global PHP_SELF with QUERY_STRING added. Before 1.5.1 |
466 | * function was stored in function/strings.php. |
467 | * |
468 | * @return string the complete url for this page |
469 | * @since 1.2.3 |
470 | */ |
471 | function php_self () { |
472 | if ( sqgetGlobalVar('REQUEST_URI', $req_uri, SQ_SERVER) && !empty($req_uri) ) { |
473 | return $req_uri; |
474 | } |
475 | |
476 | if ( sqgetGlobalVar('PHP_SELF', $php_self, SQ_SERVER) && !empty($php_self) ) { |
477 | |
478 | // need to add query string to end of PHP_SELF to match REQUEST_URI |
479 | // |
480 | if ( sqgetGlobalVar('QUERY_STRING', $query_string, SQ_SERVER) && !empty($query_string) ) { |
481 | $php_self .= '?' . $query_string; |
482 | } |
483 | |
484 | return $php_self; |
485 | } |
486 | |
487 | return ''; |
488 | } |
aa201211 |
489 | |
490 | |
491 | /** |
68a7e1d6 |
492 | * Find files and/or directories in a given directory optionally |
493 | * limited to only those with the given file extension. If the |
494 | * directory is not found or cannot be opened, no error is generated; |
8f32a0a3 |
495 | * only an empty file list is returned. |
aa201211 |
496 | FIXME: do we WANT to throw an error or a notice or... or return FALSE? |
497 | * |
68a7e1d6 |
498 | * @param string $directory_path The path (relative or absolute) |
8f32a0a3 |
499 | * to the desired directory. |
500 | * @param string $extension The file extension filter (optional; |
501 | * default is to return all files (dirs). |
502 | * @param boolean $return_filenames_only When TRUE, only file/dir names |
aa201211 |
503 | * are returned, otherwise the |
504 | * $directory_path string is |
8f32a0a3 |
505 | * prepended to each file/dir in |
aa201211 |
506 | * the returned list (optional; |
8f32a0a3 |
507 | * default is filename/dirname only) |
508 | * @param boolean $include_directories When TRUE, directories are |
68a7e1d6 |
509 | * included (optional; default |
8f32a0a3 |
510 | * DO include directories). |
68a7e1d6 |
511 | * @param boolean $directories_only When TRUE, ONLY directories |
512 | * are included (optional; default |
8f32a0a3 |
513 | * is to include files too). |
514 | * @param boolean $separate_files_and_directories When TRUE, files and |
515 | * directories are returned |
516 | * in separate lists, so |
517 | * the return value is |
518 | * formatted as a two-element |
519 | * array with the two keys |
520 | * "FILES" and "DIRECTORIES", |
521 | * where corresponding values |
522 | * are lists of either all |
523 | * files or all directories |
524 | * (optional; default do not |
525 | * split up return array). |
68a7e1d6 |
526 | * |
aa201211 |
527 | * |
8f32a0a3 |
528 | * @return array The requested file/directory list(s). |
aa201211 |
529 | * |
530 | * @since 1.5.2 |
531 | * |
532 | */ |
8f32a0a3 |
533 | function list_files($directory_path, $extension='', $return_filenames_only=TRUE, |
68a7e1d6 |
534 | $include_directories=TRUE, $directories_only=FALSE, |
8f32a0a3 |
535 | $separate_files_and_directories=FALSE) { |
aa201211 |
536 | |
537 | $files = array(); |
8f32a0a3 |
538 | $directories = array(); |
aa201211 |
539 | |
540 | //FIXME: do we want to place security restrictions here like only allowing |
541 | // directories under SM_PATH? |
542 | // validate given directory |
68a7e1d6 |
543 | // |
544 | if (empty($directory_path) |
545 | || !is_dir($directory_path) |
aa201211 |
546 | || !($DIR = opendir($directory_path))) { |
547 | return $files; |
548 | } |
549 | |
8f32a0a3 |
550 | |
551 | if (!empty($extension)) $extension = '.' . trim($extension, '.'); |
552 | $directory_path = rtrim($directory_path, '/'); |
553 | |
554 | |
aa201211 |
555 | // parse through the files |
556 | // |
aa201211 |
557 | while (($file = readdir($DIR)) !== false) { |
558 | |
559 | if ($file == '.' || $file == '..') continue; |
560 | |
8f32a0a3 |
561 | if (!empty($extension) |
68a7e1d6 |
562 | && strrpos($file, $extension) !== (strlen($file) - strlen($extension))) |
8f32a0a3 |
563 | continue; |
564 | |
565 | // only use is_dir() if we really need to (be as efficient as possible) |
566 | // |
567 | $is_dir = FALSE; |
68a7e1d6 |
568 | if (!$include_directories || $directories_only |
8f32a0a3 |
569 | || $separate_files_and_directories) { |
570 | if (is_dir($directory_path . '/' . $file)) { |
571 | if (!$include_directories) continue; |
572 | $is_dir = TRUE; |
68a7e1d6 |
573 | $directories[] = ($return_filenames_only |
8f32a0a3 |
574 | ? $file |
575 | : $directory_path . '/' . $file); |
68a7e1d6 |
576 | } |
8f32a0a3 |
577 | if ($directories_only) continue; |
578 | } |
579 | |
68a7e1d6 |
580 | if (!$separate_files_and_directories |
8f32a0a3 |
581 | || ($separate_files_and_directories && !$is_dir)) { |
68a7e1d6 |
582 | $files[] = ($return_filenames_only |
8f32a0a3 |
583 | ? $file |
584 | : $directory_path . '/' . $file); |
aa201211 |
585 | } |
586 | |
587 | } |
588 | closedir($DIR); |
589 | |
8f32a0a3 |
590 | |
591 | if ($directories_only) return $directories; |
592 | if ($separate_files_and_directories) return array('FILES' => $files, |
593 | 'DIRECTORIES' => $directories); |
aa201211 |
594 | return $files; |
595 | |
596 | } |
597 | |
598 | |
599 | /** |
600 | * Print variable |
601 | * |
602 | * sm_print_r($some_variable, [$some_other_variable [, ...]]); |
603 | * |
604 | * Debugging function - does the same as print_r, but makes sure special |
605 | * characters are converted to htmlentities first. This will allow |
606 | * values like <some@email.address> to be displayed. |
607 | * The output is wrapped in <<pre>> and <</pre>> tags. |
608 | * Since 1.4.2 accepts unlimited number of arguments. |
609 | * @since 1.4.1 |
610 | * @return void |
611 | */ |
612 | function sm_print_r() { |
613 | ob_start(); // Buffer output |
614 | foreach(func_get_args() as $var) { |
615 | print_r($var); |
616 | echo "\n"; |
617 | // php has get_class_methods function that can print class methods |
618 | if (is_object($var)) { |
619 | // get class methods if $var is object |
620 | $aMethods=get_class_methods(get_class($var)); |
621 | // make sure that $aMethods is array and array is not empty |
622 | if (is_array($aMethods) && $aMethods!=array()) { |
623 | echo "Object methods:\n"; |
624 | foreach($aMethods as $method) { |
625 | echo '* ' . $method . "\n"; |
626 | } |
627 | } |
628 | echo "\n"; |
629 | } |
630 | } |
631 | $buffer = ob_get_contents(); // Grab the print_r output |
632 | ob_end_clean(); // Silently discard the output & stop buffering |
633 | print '<div align="left"><pre>'; |
634 | print htmlentities($buffer); |
635 | print '</pre></div>'; |
636 | } |
637 | |
638 | |