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ocilogon (PHP 3>= 3.0.4, PHP 4 , PHP 5) ocilogon -- 确立一个到 Oracle 的连接 描述resource ocilogon ( string username, string password [, string db])
ocilogon() 返回一个OCI 调用需要的连接标志符。
可选的第3个参数含有你想要连接的数据库的名字，该名字为本地 Oracle
实列的名字或者在 tnsnames.ora 的条目中的名字。
如果第3个参数没有定义， PHP 使用环境变量 ORACLE_SID (Oracle 实列)
或 TWO_TASK (tnsnames.ora) 来确定连接哪一个数据库。
当使用 ocilogon() 的时候，
连接在页水平上被共享。
这意味着提交和回滚应用到该页所有开放的事务，甚至在你已经创建
多个连接的情况下。
这个例子演示连接是怎样被共享的。
例子 1. ocilogon()
<?php
echo "<pre>";
$db = "";
$c1 = ocilogon("scott", "tiger", $db);
$c2 = ocilogon("scott", "tiger", $db);
function create_table($conn)
{
$stmt = ociparse($conn, "create table scott.hallo (test varchar2(64))");
ociexecute($stmt);
echo $conn . " created table\n\n";
}
function drop_table($conn)
{
$stmt = ociparse($conn, "drop table scott.hallo");
ociexecute($stmt);
echo $conn . " dropped table\n\n";
}
function insert_data($conn)
{
$stmt = ociparse($conn, "insert into scott.hallo
values('$conn' || ' ' || to_char(sysdate,'DD-MON-YY HH24:MI:SS'))");
ociexecute($stmt, OCI_DEFAULT);
echo $conn . " inserted hallo\n\n";
}
function delete_data($conn)
{
$stmt = ociparse($conn, "delete from scott.hallo");
ociexecute($stmt, OCI_DEFAULT);
echo $conn . " deleted hallo\n\n";
}
function commit($conn)
{
ocicommit($conn);
echo $conn . " committed\n\n";
}
function rollback($conn)
{
ocirollback($conn);
echo $conn . " rollback\n\n";
}
function select_data($conn)
{
$stmt = ociparse($conn, "select * from scott.hallo");
ociexecute($stmt, OCI_DEFAULT);
echo $conn."----selecting\n\n";
while (ocifetch($stmt)) {
echo $conn . " [" . ociresult($stmt, "TEST") . "]\n\n";
}
echo $conn . "----done\n\n";
}
create_table($c1);
insert_data($c1); // Insert a row using c1
insert_data($c2); // Insert a row using c2
select_data($c1); // Results of both inserts are returned
select_data($c2);
rollback($c1); // Rollback using c1
select_data($c1); // Both inserts have been rolled back
select_data($c2);
insert_data($c2); // Insert a row using c2
commit($c2); // Commit using c2
select_data($c1); // Result of c2 insert is returned
delete_data($c1); // Delete all rows in table using c1
select_data($c1); // No rows returned
select_data($c2); // No rows returned
commit($c1); // Commit using c1
select_data($c1); // No rows returned
select_data($c2); // No rows returned
drop_table($c1);
echo "</pre>";
?>
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参见 ociplogon() 和
ocinlogon()。
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