/[pliva-si]/inc/class.DBD::Pg
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Contents of /inc/class.DBD::Pg

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Revision 1.1.1.1 - (show annotations) (vendor branch)
Mon Jun 25 09:57:25 2001 UTC (17 years, 11 months ago) by ravilov
Branch: MAIN, pliva
CVS Tags: r0, HEAD
Changes since 1.1: +0 -0 lines
initial import

1 <?PHP // -*-Mode: C++;-*-
2 /*
3 Joseph Artsimovich (joseph_a<at>mail<dot>ru)
4 DBD::Pg -- The PostgreSQL Driver.
5 See: http://evil.inetarena.com/php/DBI.php for more info.
6
7 Licence: LGPL (http://www.gnu.org/).
8
9 This software is provided "AS IS" with no warrenty either implicit,
10 explicit or otherwise. Use at your own risk.
11
12
13 Notes:
14
15 o insert_id is not implemented
16 */
17
18 class DBD_Pg {
19
20 var $is_persisent;
21 var $DBI;
22 var $exit_on_fail = 0;
23 var $dbh;
24 var $last_oid;
25
26 function DBD_connect( $db_name, $db_host = '',
27 $db_user = '', $db_passwd = '',
28 $is_persistent = 0){
29
30 //Track the $is_persistant just for fun...
31 $is_persistent = $is_persistent ? $is_persistent : 0;
32 $this->is_persistent = $is_persistent;
33
34 //DEBUG...
35 //echo "DBD::Pg: [$db_name][$db_host][$db_user][$is_persistent]<br>\n";
36
37 $str = '';
38 if ($db_host) $str .= "host=$db_host ";
39 if ($db_name) $str .= "dbname=$db_name ";
40 if ($db_user) $str .= "user=$db_user ";
41 if ($db_passwd) $str .= "password=$db_passwd ";
42
43 $str = chop($str);
44
45 if( $is_persistent ){
46 $conn = pg_pconnect( $str );
47 } else {
48 $conn = pg_connect( $str );
49 }
50
51 if( !$conn ){
52 $this->errstr = "DBD::Pg Error: Could not connect to the database.";
53 return;
54 }
55
56 $this->dbh = $conn;
57 return( $this );
58 }//end connect function
59
60
61
62 function disconnect( ){
63 pg_close( $this->dbh );
64 $this->dbh = undef;
65 return( 1 );
66 }//end disconnect function
67
68
69 function prepare( $query ){
70 if( ! $this->dbh ){ return; }
71 //Does nothing but save the query...
72 $sth = new STH_Pg;
73 $sth->DBH( $this );
74 $sth->prepare( $query );
75 return( $sth );
76 }//end dbh prepare fn
77
78
79 //do is a reserved word so I have to name this something else.
80 function dbh_do( $query ){
81 //run the query and return the number of affected rows.
82 $result = pg_exec( $this->dbh, $query );
83 if( ! $result ){
84 $this->errstr = "DBI Error: 'dbh_do' failed: ".
85 pg_errormessage( $this->dbh );
86
87 if( $this->exit_on_fail ){
88 echo $this->errstr."<br>\n";
89 $this->disconnect( );
90 exit( ); }
91
92 return;
93 }
94 $this->last_oid=pg_GetLastOid( $result );
95 $rows = pg_cmdtuples( $result );
96 if( $rows == 0 ){ $rows = '0E0'; }
97 return( $rows );
98 }//end fn do
99
100
101 function insert_id( ){
102 //Get the last serial number from an insert.
103 $this->errstr = "DBI Error: 'insertid' unimplemented.";
104 return( -1 );
105 }//end fn do
106
107 function last_oid( ){
108 return( $this->last_oid );
109 }//end fn do
110
111
112 function quote( $string ){
113 if( $string ){
114 return( "'".addslashes( $string )."'" );
115 } else {
116 return( 'NULL' );
117 }
118 }//end fn quote
119
120
121 }//end DBI class
122
123
124 //===========================================================
125
126 class STH_Pg {
127
128 var $query;
129 var $DBH;
130 var $dbh;
131 var $result;
132 var $row = 0;
133
134 function STH( $dbh = '' ){
135 if( $dbh ){
136 $this->dbh = $dbh;
137 }
138 return( $this );
139 }
140
141
142 function DBH( $dbh ){
143 $this->DBH = $dbh; //watch out, this copies the object not the reference.
144 $this->dbh = $dbh->dbh;
145 return( $dbh );
146 }
147
148
149 function prepare( $query ){
150 if( ! $this->dbh ){ return; }
151 $this->query = $query;
152 return( $query );
153 }
154
155
156 function execute( ){
157 if( ! $this->dbh ){ return; }
158 //echo "Running query $this->query<br>\n";
159 $this->result = pg_exec( $this->dbh, $this->query );
160
161 if( ! $this->result ){
162 $this->errstr = "STH Execute failed: ".pg_errormessage( $this->dbh );
163 return;
164 }
165
166 return( 1 );
167 }//end execute fn
168
169
170 function finish( ){
171 if( ! $this->result ){ return; }
172 pg_freeresult( $this->result );
173 $this->result = undef;
174 return( 1 );
175 }//end execute fn
176
177
178 function rows( ){
179 return( pg_numrows( $this->result ) );
180 } //end rows fn
181
182 function fetchrow_array( ){
183 if( ! $this->result ){
184 //echo "STH Error: Calling fetchrow on null result.<br>\n";
185 return;
186 }
187 if ($this->row >= pg_numrows($this->result)) return 0;
188 return( pg_fetch_row( $this->result, $this->row++ ));
189 }
190
191
192 function fetchrow_hash( ){
193 if( ! $this->result ){
194 //echo "STH Error: Calling fetchrow on null result.<br>\n";
195 return;
196 }
197 if ($this->row >= pg_numrows($this->result)) return 0;
198 return( pg_fetch_array( $this->result, $this->row++ ));
199 }
200 }
201
202
203 $GLOBALS[classDBDPg_read] = 1;

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