1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 5 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2016 The PHP Group |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 3.01 of the PHP license, |
8 | that is bundled with this package in the file LICENSE, and is |
9 | available through the world-wide-web at the following url: |
10 | http://www.php.net/license/3_01.txt |
11 | If you did not receive a copy of the PHP license and are unable to |
12 | obtain it through the world-wide-web, please send a note to |
13 | license@php.net so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
15 | Authors: Georg Richter <georg@php.net> |
16 | Andrey Hristov <andrey@php.net> |
17 | Ulf Wendel <uw@php.net> |
18 +----------------------------------------------------------------------+
19
20 $Id: mysqli.c 299335 2010-05-13 11:05:09Z andrey $
21 */
22
23 #ifdef HAVE_CONFIG_H
24 #include "config.h"
25 #endif
26
27 #include <signal.h>
28
29 #include "php.h"
30 #include "php_ini.h"
31 #include "php_mysqli_structs.h"
32 #include "mysqli_priv.h"
33 #include "zend_interfaces.h"
34
35
36 extern zend_object_iterator_funcs php_mysqli_result_iterator_funcs;
37
38 typedef struct {
39 zend_object_iterator intern;
40 mysqli_object *result;
41 zval *current_row;
42 my_longlong row_num;
43 } php_mysqli_result_iterator;
44
45
46 /* {{{ */
php_mysqli_result_get_iterator(zend_class_entry * ce,zval * object,int by_ref TSRMLS_DC)47 zend_object_iterator *php_mysqli_result_get_iterator(zend_class_entry *ce, zval *object, int by_ref TSRMLS_DC)
48 {
49 php_mysqli_result_iterator *iterator;
50
51 if (by_ref) {
52 zend_error(E_ERROR, "An iterator cannot be used with foreach by reference");
53 }
54 iterator = ecalloc(1, sizeof(php_mysqli_result_iterator));
55
56 Z_ADDREF_P(object);
57 iterator->intern.data = (void*)object;
58 iterator->intern.funcs = &php_mysqli_result_iterator_funcs;
59 iterator->result = (mysqli_object *) zend_object_store_get_object(object TSRMLS_CC);
60 iterator->row_num = -1;
61
62 return (zend_object_iterator*)iterator;
63 }
64 /* }}} */
65
66
67 /* {{{ */
php_mysqli_result_iterator_dtor(zend_object_iterator * iter TSRMLS_DC)68 static void php_mysqli_result_iterator_dtor(zend_object_iterator *iter TSRMLS_DC)
69 {
70 php_mysqli_result_iterator *iterator = (php_mysqli_result_iterator*) iter;
71
72 /* cleanup handled in sxe_object_dtor as we dont always have an iterator wrapper */
73 if (iterator->intern.data) {
74 zval_ptr_dtor((zval**)&iterator->intern.data);
75 }
76 if (iterator->current_row) {
77 zval_ptr_dtor(&iterator->current_row);
78 }
79 efree(iterator);
80 }
81 /* }}} */
82
83
84 /* {{{ */
php_mysqli_result_iterator_valid(zend_object_iterator * iter TSRMLS_DC)85 static int php_mysqli_result_iterator_valid(zend_object_iterator *iter TSRMLS_DC)
86 {
87 php_mysqli_result_iterator *iterator = (php_mysqli_result_iterator*) iter;
88
89 return iterator->current_row && Z_TYPE_P(iterator->current_row) == IS_ARRAY ? SUCCESS : FAILURE;
90 }
91 /* }}} */
92
93
94 /* {{{ */
php_mysqli_result_iterator_current_data(zend_object_iterator * iter,zval *** data TSRMLS_DC)95 static void php_mysqli_result_iterator_current_data(zend_object_iterator *iter, zval ***data TSRMLS_DC)
96 {
97 php_mysqli_result_iterator *iterator = (php_mysqli_result_iterator*) iter;
98
99 *data = &iterator->current_row;
100 }
101 /* }}} */
102
103
104 /* {{{ */
php_mysqli_result_iterator_move_forward(zend_object_iterator * iter TSRMLS_DC)105 static void php_mysqli_result_iterator_move_forward(zend_object_iterator *iter TSRMLS_DC)
106 {
107
108 php_mysqli_result_iterator *iterator = (php_mysqli_result_iterator*) iter;
109 mysqli_object *intern = iterator->result;
110 MYSQL_RES *result;
111
112 MYSQLI_FETCH_RESOURCE_BY_OBJ(result, MYSQL_RES *, intern, "mysqli_result", MYSQLI_STATUS_VALID);
113 if (iterator->current_row) {
114 zval_ptr_dtor(&iterator->current_row);
115 }
116 MAKE_STD_ZVAL(iterator->current_row);
117 php_mysqli_fetch_into_hash_aux(iterator->current_row, result, MYSQLI_ASSOC TSRMLS_CC);
118 if (Z_TYPE_P(iterator->current_row) == IS_ARRAY) {
119 iterator->row_num++;
120 }
121 }
122 /* }}} */
123
124
125 /* {{{ */
php_mysqli_result_iterator_rewind(zend_object_iterator * iter TSRMLS_DC)126 static void php_mysqli_result_iterator_rewind(zend_object_iterator *iter TSRMLS_DC)
127 {
128 php_mysqli_result_iterator *iterator = (php_mysqli_result_iterator*) iter;
129 mysqli_object *intern = iterator->result;
130 MYSQL_RES *result;
131
132 MYSQLI_FETCH_RESOURCE_BY_OBJ(result, MYSQL_RES *, intern, "mysqli_result", MYSQLI_STATUS_VALID);
133
134 if (mysqli_result_is_unbuffered(result)) {
135 #if MYSQLI_USE_MYSQLND
136 if (result->unbuf->eof_reached) {
137 #else
138 if (result->eof) {
139 #endif
140 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Data fetched with MYSQLI_USE_RESULT can be iterated only once");
141 return;
142 }
143 } else {
144 mysql_data_seek(result, 0);
145 }
146 iterator->row_num = -1;
147 php_mysqli_result_iterator_move_forward(iter TSRMLS_CC);
148 }
149 /* }}} */
150
151
152 /* {{{ php_mysqli_result_iterator_current_key */
153 static void php_mysqli_result_iterator_current_key(zend_object_iterator *iter, zval *key TSRMLS_DC)
154 {
155 php_mysqli_result_iterator *iterator = (php_mysqli_result_iterator*) iter;
156
157 ZVAL_LONG(key, iterator->row_num);
158 }
159 /* }}} */
160
161
162 /* {{{ php_mysqli_result_iterator_funcs */
163 zend_object_iterator_funcs php_mysqli_result_iterator_funcs = {
164 php_mysqli_result_iterator_dtor,
165 php_mysqli_result_iterator_valid,
166 php_mysqli_result_iterator_current_data,
167 php_mysqli_result_iterator_current_key,
168 php_mysqli_result_iterator_move_forward,
169 php_mysqli_result_iterator_rewind,
170 };
171 /* }}} */
172
173
174 /*
175 * Local variables:
176 * tab-width: 4
177 * c-basic-offset: 4
178 * End:
179 * vim600: noet sw=4 ts=4 fdm=marker
180 * vim<600: noet sw=4 ts=4
181 */
182
