I'm making a counter using DB,
1 ?php
2 require_once 'DB.php';
3
4 $sql_type = 'mysql';
5 $sql_user = 'root';
6 $sql_pass = '';
7 $sql_host = 'localhost';
8 $sql_db = 'valerie';
9
10 $dsn=
$sql_type://$sql_user:[EMAIL PROTECTED]/$sql_db;
11 $db = DB::connect($dsn);
12
13 // autoExecute config
14 $table_name = 'counter';
15 $fields_values = array('counter' = $counter++);
16 $where = page = 'index';
17
18 $result = $db-query(LOCK TABLES counter WRITE);
19 if ( DB::isError($result) ) {
20 die($result-getMessage());
21 }
22
23 $sql= SELECT counter FROM $table_name WHERE $where;
24 $result = $db-query($sql);
25 if ( DB::isError($result) ) {
26 die($result-getMessage());
27 }
28 list($counter) = $result-fetchRow();
29
30 // update counter
31 $result = $db-autoExecute($table_name, $fields_values,
DB_AUTOQUERY_UPDATE, $where);
32 if ( DB::isError($result) ) {
33 die($result-getMessage());
34 }
35
36 $result = $db-query(UNLOCK TABLES);
37 if ( DB::isError($result) ) {
38 die($result-getMessage());
39 }
40
41 die;
42 ?
it works well, but I don't think it's efficient calling DB::isError
everytime, so (inspired by Advanced PHP Programming book by Mr. George
Schlossnagle) I made a class (PHP 4.3.9) to handle it . (instead of using
functions and must call boring 'global' at the top of each function)
1 ?php
2 /**
3 * PEAR DB
4 */
5 require_once 'DB.php';
6
7 class DBku
8 {
9 // protected
10 var $type;
11 var $user;
12 var $pass;
13 var $host;
14 var $db;
15 var $dbhandler;
16
17 // {{{
18 // public
19 function __construct($type, $user, $pass, $host, $db)
20 {
21 $this-type = $type;
22 $this-user = $user;
23 $this-pass = $pass;
24 $this-host = $host;
25 $this-db = $db;
26 }
27 // }}}
28
29 // {{{
30 // public
31 function connect()
32 {
33 $this-dbhandler =
DB::connect($this-type,://,$this-user,:,$this-pass,@,$this-host,/
,$this-db);
34 $this-error($this-dbhandler);
35 }
36 // }}}
37
38 // {{{
39 // public
40 function execute($query)
41 {
42 if ( !$this-dbhandler ) {
43 $this-connect();
44 }
45 $ret = $this-dbhandler-query($query);
46 $this-error($ret);
47 }
48 // }}}
49
50 // {{{
51 // protected
52 function error($er_value)
53 {
54 if (DB::isError($er_value)) {
55 echo 'Standard Message: ' . $er_value-getMessage() .
\n;
56 echo 'Standard Code: ' . $er_value-getCode() . \n;
57 echo 'DBMS/User Message: ' . $er_value-getUserInfo() .
\n;
58 echo 'DBMS/Debug Message: ' . $er_value-getDebugInfo() .
\n;
59 die;
60 }
61 }
62 // }}}
63 }
64
65 $sql = new DBku('mysql', 'root', '', 'localhost', 'valerie');
66 var_dump($sql);
67 $sql-execute('SELECT * FROM country');
68 die;
69 ?
my problem is : everytime I execute this file in CLI mode I always got this
:
E:\php\pearphp config_valerie4.inc.php
object(DBku)#1 (6) {
[type]=
string(5) mysql
[user]=
string(4) root
[pass]=
string(0)
[host]=
string(9) localhost
[db]=
string(7) valerie
[dbhandler]=
NULL
}
Standard Message: DB Error: no database selected
Standard Code: -14
DBMS/User Message: SELECT * FROM country [nativecode=1046 ** No Database
Selected]
DBMS/Debug Message: SELECT * FROM country [nativecode=1046 ** No Database
Selected]
How come the message said I didn't select database ??
I also throw this thread to php-general mailing lists because when somebody
talked about OOP then many arguments would come from many people there and I
just enjoy to hear (read) it :)
So, Opinions (good or bad things), Suggestions, Corrections to my code
(especially idea to make my class shorter and would be compatible in PHP4
5) would be very welcome.
Thank you.
Valérie Delon
étudiante
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Mais j'crois que ce n'est pas assez
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