PHP 5.6.0 released

oci_execute

(PHP 5, PECL OCI8 >= 1.1.0)

oci_executeExecutes a statement

Descrizione

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().

Elenco dei parametri

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_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.

Valori restituiti

Restituisce TRUE in caso di successo, FALSE in caso di fallimento.

Esempi

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 (
$row oci_fetch_array($stidOCI_ASSOC+OCI_RETURN_NULLS)) {
    echo 
"<tr>\n";
    foreach (
$row as $item) {
        echo 
"    <td>" . ($item !== null htmlentities($itemENT_QUOTES) : "&nbsp;") . "</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($stid':bv'$i10);
for (
$i 1$i <= 5; ++$i) {
    
oci_execute($stidOCI_NO_AUTO_COMMIT);  // use OCI_DEFAULT for PHP <= 5.3.1
}
oci_commit($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($stidOCI_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($sOCI_DESCRIBE_ONLY);
for (
$i 1$i <= oci_num_fields($stid); ++$i) {
    echo 
oci_field_name($stid$i) . "<br>\n";
}

?>

Note

Nota:

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.

Nota:

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.

Vedere anche:

  • oci_parse() - Prepares an Oracle statement for execution

add a note add a note

User Contributed Notes 2 notes

up
0
filipesampaio at hotmail dot com
3 years ago
Just to write it down. I was trying to do a simple SELECT on a Caché (http://www.intersystems.com/cache/) table through an Oracle dblink, but always received the error "ORA-01002: fetch out of sequence". The solution was using OCI_NO_AUTO_COMMIT on the oci_execute function.
up
0
tower98 at gmail dot com
4 years ago
Notice (PHP 5.2.12-pl0-gentoo):
You can parse empty query, you can execute empty query (returns true), but you cannot fetch data from empty query. So, if you provide query as variable, make sure it isn't empty.

<?php
$q
= oci_parse($c, "");
if(
$q != false){
   
// parsing empty query != false
   
if(oci_execute($q){
       
// executing empty query != false
       
if(oci_fetch_all($q, $data, 0, -1, OCI_FETCHSTATEMENT_BY_ROW) == false){
           
// but fetching executed empty query results in error (ORA-24338: statement handle not executed)
           
$e = oci_error($q);
            echo
$e['message'];
        }
    }
    else{
       
$e = oci_error($q);
        echo
$e['message'];
    }
}
else{
   
$e = oci_error($link);
    echo
$e['message'];
}
?>
To Top