(PHP 5, PECL OCI8 >= 1.1.0)
oci_execute — Executes a statement
$statement
[, int $mode = OCI_COMMIT_ON_SUCCESS
] )
Executes a statement previously returned
from oci_parse().
After execution, statements like INSERT will have data committed to the database by default. For statements like SELECT, execution performs the logic of the query. Query results can subsequently be fetched in PHP with functions like oci_fetch_array().
Each parsed statement may be executed multiple times, saving the cost of re-parsing. This is commonly used for INSERT statements when data is bound with oci_bind_by_name().
statementA valid OCI statement identifier.
modeAn optional second parameter can be one of the following constants:
| Constant | Description |
|---|---|
OCI_COMMIT_ON_SUCCESS |
Automatically commit all outstanding changes for this connection when the statement has succeeded. This is the default. |
OCI_DESCRIBE_ONLY |
Make query meta data available to functions like oci_field_name() but do not create a result set. Any subsequent fetch call such as oci_fetch_array() will fail. |
OCI_NO_AUTO_COMMIT |
Do not automatically commit changes. Prior to PHP
5.3.2 (PECL OCI8 1.4)
use OCI_DEFAULT which is equivalent
to OCI_NO_AUTO_COMMIT. |
Using OCI_NO_AUTO_COMMIT mode starts or continues a
transaction. Transactions are automatically rolled back when
the connection is closed, or when the script ends. Explicitly
call oci_commit() to commit a transaction,
or oci_rollback() to abort it.
When inserting or updating data, using transactions is recommended for relational data consistency and for performance reasons.
If OCI_NO_AUTO_COMMIT mode is used for any
statement including queries, and
oci_commit()
or oci_rollback() is not subsequently
called, then OCI8 will perform a rollback at the end of the
script even if no data was changed. To avoid an unnecessary
rollback, many scripts do not
use OCI_NO_AUTO_COMMIT mode for queries or
PL/SQL. Be careful to ensure the appropriate transactional
consistency for the application when
using oci_execute() with different modes in
the same script.
Întoarce valoarea TRUE în cazul
succesului sau FALSE în cazul eșecului.
Example #1 oci_execute() for queries
<?php
$conn = oci_connect('hr', 'welcome', 'localhost/XE');
$stid = oci_parse($conn, 'SELECT * FROM employees');
oci_execute($stid);
echo "<table border='1'>\n";
while ($row = oci_fetch_array($stid, OCI_ASSOC+OCI_RETURN_NULLS)) {
echo "<tr>\n";
foreach ($row as $item) {
echo " <td>" . ($item !== null ? htmlentities($item, ENT_QUOTES) : " ") . "</td>\n";
}
echo "</tr>\n";
}
echo "</table>\n";
?>
Example #2 oci_execute() without specifying a mode example
<?php
// Before running, create the table:
// CREATE TABLE MYTABLE (col1 NUMBER);
$conn = oci_connect('hr', 'welcome', 'localhost/XE');
$stid = oci_parse($conn, 'INSERT INTO mytab (col1) VALUES (123)');
oci_execute($stid); // The row is committed and immediately visible to other users
?>
Example #3 oci_execute() with OCI_NO_AUTO_COMMIT example
<?php
// Before running, create the table:
// CREATE TABLE MYTABLE (col1 NUMBER);
$conn = oci_connect('hr', 'welcome', 'localhost/XE');
$stid = oci_parse($conn, 'INSERT INTO mytab (col1) VALUES (:bv)');
oci_bind_by_name($stid, ':bv', $i, 10);
for ($i = 1; $i <= 5; ++$i) {
oci_execute($stid, OCI_NO_AUTO_COMMIT); // use OCI_DEFAULT for PHP <= 5.3.1
}
oci_commit($conn); // commits all new values: 1, 2, 3, 4, 5
?>
Example #4 oci_execute() with different commit modes example
<?php
// Before running, create the table:
// CREATE TABLE MYTABLE (col1 NUMBER);
$conn = oci_connect('hr', 'welcome', 'localhost/XE');
$stid = oci_parse($conn, 'INSERT INTO mytab (col1) VALUES (123)');
oci_execute($stid, OCI_NO_AUTO_COMMIT); // data not committed
$stid = oci_parse($conn, 'INSERT INTO mytab (col1) VALUES (456)');
oci_execute($stid); // commits both 123 and 456 values
?>
Example #5 oci_execute() with
OCI_DESCRIBE_ONLY example
<?php
$conn = oci_connect('hr', 'welcome', 'localhost/XE');
$stid = oci_parse($conn, 'SELECT * FROM locations');
oci_execute($s, OCI_DESCRIBE_ONLY);
for ($i = 1; $i <= oci_num_fields($stid); ++$i) {
echo oci_field_name($stid, $i) . "<br>\n";
}
?>
Notă:
Transactions are automatically rolled back when connections are closed, or when the script ends, whichever is soonest. Explicitly call oci_commit() to commit a transaction.
Any call to oci_execute() that uses
OCI_COMMIT_ON_SUCCESSmode explicitly or by default will commit any previous uncommitted transaction.Any Oracle DDL statement such as CREATE or DROP will automatically commit any uncommitted transaction.
Notă:
Because the oci_execute() function generally sends the statement to the database, oci_execute() can identify some statement syntax errors that the lightweight, local oci_parse() function does not.