OCI_EXECUTE(3) OCI_EXECUTE(3)
oci_execute - Executes a statement
SYNOPSIS
bool oci_execute (resource $statement, [int $mode = OCI_COMMIT_ON_SUCCESS])
DESCRIPTION
Executes a $statement previously returned from oci_parse(3).
After execution, statements like INSERT will have data committed to the database by default. For statements like SELECT, execution per-
forms the logic of the query. Query results can subsequently be fetched in PHP with functions like oci_fetch_array(3).
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(3).
PARAMETERS
o $statement
- A valid OCI statement identifier.
o $mode
- An optional second parameter can be one of the following constants:
Execution Modes
+----------------------+---------------------------------------------------+
| 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(3) but do not create a result set. |
| | Any subsequent fetch call such as |
| | oci_fetch_array(3) 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(3) to commit a transaction, or oci_rollback(3) 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(3) or oci_rollback(3) 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 consis-
tency for the application when using oci_execute(3) with different modes in the same script.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
Example #1
oci_execute(3) for queries
<?php
$conn = oci_connect('hr', 'welcome', 'localhost/XE');
$stid = oci_parse($conn, 'SELECT * FROM employees');
oci_execute($stid);
echo "<table border='1'>
";
while ($row = oci_fetch_array($stid, OCI_ASSOC+OCI_RETURN_NULLS)) {
echo "<tr>
";
foreach ($row as $item) {
echo " <td>" . ($item !== null ? htmlentities($item, ENT_QUOTES) : " ") . "</td>
";
}
echo "</tr>
";
}
echo "</table>
";
?>
Example #2
oci_execute(3) 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(3) 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(3) 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(3) 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>
";
}
?>
NOTES
Note
Transactions are automatically rolled back when connections are closed, or when the script ends, whichever is soonest. Explicitly
call oci_commit(3) to commit a transaction.
Any call to oci_execute(3) that uses OCI_COMMIT_ON_SUCCESS mode 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.
Note
Because the oci_execute(3) function generally sends the statement to the database, oci_execute(3) can identify some statement syn-
tax errors that the lightweight, local oci_parse(3) function does not.
SEE ALSO
oci_parse(3).
PHP Documentation Group OCI_EXECUTE(3)