(ismeretlen PHP verzió)
OCILogon -- Establishes a connection to Oracle
Description
int OCILogon (string username, string password [, string db])
OCILogon() returns an connection identifier
needed for most other OCI calls. The optional third parameter
can either contain the name of the local Oracle instance or the
name of the entry in tnsnames.ora to which you want to connect.
If the optional third parameter is not specified, PHP uses the
environment variables ORACLE_SID (Oracle instance) or TWO_TASK
(tnsnames.ora) to determine which database to connect to.
Connections are shared at the page level when using
OCILogon(). This means that commits and
rollbacks apply to all open transactions in the page, even if you
have created multiple connections.
This example demonstrates how the connections are shared.
Példa 1. OCILogon 1
2 <?php
3 print "<HTML><PRE>";
4 $db = "";
5
6 $c1 = ocilogon("scott","tiger",$db);
7 $c2 = ocilogon("scott","tiger",$db);
8
9 function create_table($conn)
10 { $stmt = ociparse($conn,"create table scott.hallo (test
11 varchar2(64))");
12 ociexecute($stmt);
13 echo $conn." created table\n\n";
14 }
15
16 function drop_table($conn)
17 { $stmt = ociparse($conn,"drop table scott.hallo");
18 ociexecute($stmt);
19 echo $conn." dropped table\n\n";
20 }
21
22 function insert_data($conn)
23 { $stmt = ociparse($conn,"insert into scott.hallo values('$conn' || ' ' || to_char(sysdate,'DD-MON-YY HH24:MI:SS'))");
24 ociexecute($stmt,OCI_DEFAULT);
25 echo $conn." inserted hallo\n\n";
26 }
27
28 function delete_data($conn)
29 { $stmt = ociparse($conn,"delete from scott.hallo");
30 ociexecute($stmt,OCI_DEFAULT);
31 echo $conn." deleted hallo\n\n";
32 }
33
34 function commit($conn)
35 { ocicommit($conn);
36 echo $conn." commited\n\n";
37 }
38
39 function rollback($conn)
40 { ocirollback($conn);
41 echo $conn." rollback\n\n";
42 }
43
44 function select_data($conn)
45 { $stmt = ociparse($conn,"select * from scott.hallo");
46 ociexecute($stmt,OCI_DEFAULT);
47 echo $conn."----selecting\n\n";
48 while (ocifetch($stmt))
49 echo $conn." <".ociresult($stmt,"TEST").">\n\n";
50 echo $conn."----done\n\n";
51 }
52
53 create_table($c1);
54 insert_data($c1); // Insert a row using c1
55 insert_data($c2); // Insert a row using c2
56
57 select_data($c1); // Results of both inserts are returned
58 select_data($c2);
59
60 rollback($c1); // Rollback using c1
61
62 select_data($c1); // Both inserts have been rolled back
63 select_data($c2);
64
65 insert_data($c2); // Insert a row using c2
66 commit($c2); // commit using c2
67
68 select_data($c1); // result of c2 insert is returned
69
70 delete_data($c1); // delete all rows in table using c1
71 select_data($c1); // no rows returned
72 select_data($c2); // no rows returned
73 commit($c1); // commit using c1
74
75 select_data($c1); // no rows returned
76 select_data($c2); // no rows returned
77
78
79 drop_table($c1);
80 print "</PRE></HTML>";
81 ?> |
|
See also OCIPLogon() and
OCINLogon().