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# oci_execute

(PHP 5, PECL OCI8 >= 1.1.0)

oci_execute — Executes a statement

### Beschreibung

bool oci_execute ( resource `$statement` [, int `$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().

### Parameter-Liste

`statement`

  A valid OCI statement identifier.

`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_DEFAULT` | Obsolete as of PHP 5.3.2 (PECL OCI8 1.4) but still available for backward compatibility. Use the equivalent `OCI_NO_AUTO_COMMIT` in new code.
  `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 an alias for `OCI_NO_AUTO_COMMIT`.

  Using `OCI_NO_AUTO_COMMIT` mode starts 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.

### Rückgabewerte

Gibt bei Erfolg `TRUE` zurück. Im Fehlerfall wird `FALSE` zurückgegeben.

### Beispiele

Beispiel #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) : "&nbsp;") . "</td>\n";
}
echo "</tr>\n";
}
echo "</table>\n";
?>`

Beispiel #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
?>`

Beispiel #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
?>`

Beispiel #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
?>`

Beispiel #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";
}
?>`

### Anmerkungen

> Hinweis: 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_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.

> Hinweis: 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.

> Hinweis: In PHP versions before 5.0.0 use ociexecute() instead. Der alte Funktionsname kann noch immer verwendet werden, dies ist jedoch veraltet und wird nicht empfohlen.

### Siehe auch

- oci_parse() - Prepares an Oracle statement for execution

oci_error
oci_fetch_all
OCI8 Funktionen
PHP Manual