(PHP 5, PHP 7, PHP 8, PECL OCI8 >= 1.1.0)
oci_execute — 执行语句
$statement, int $mode = OCI_COMMIT_ON_SUCCESS): bool
执行先前从 oci_parse() 返回的 statement。
执行后，像 INSERT 这样的语句默认会将数据提交到数据库中。对于像 SELECT
这样的语句，执行查询的逻辑。随后可以使用 oci_fetch_array() 等函数在 PHP 中获取查询结果。
每个已解析的语句可能会执行多次，节省了重新解析的成本。当使用 oci_bind_by_name() 绑定数据时，这通常用于 INSERT 语句。
statement有效的 OCI 语句标识符。
mode可选的第二个参数可以是以下常量之一：
| 常量 | 说明 |
|---|---|
OCI_COMMIT_ON_SUCCESS |
当语句成功时，自动提交此连接的所有未完成更改。这是默认设置。 |
OCI_DESCRIBE_ONLY |
使查询元数据可用于 oci_field_name() 等函数，但不创建结果集。任何后续的读取调用（例如 oci_fetch_array()）都将失败。 |
OCI_NO_AUTO_COMMIT |
不要自动提交更改。在 PHP 5.3.2（PECL OCI8 1.4）之前使用 OCI_DEFAULT，它等同于
OCI_NO_AUTO_COMMIT。 |
使用 OCI_NO_AUTO_COMMIT 模式启动或继续事务。当连接关闭或脚本结束时，事务会自动回滚。显式调用
oci_commit() 来提交事务，或调用 oci_rollback() 来中止它。
插入或更新数据时，出于关系数据一致性和性能原因，建议使用事务。
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.
成功时返回 true， 或者在失败时返回 false。
示例 #1 oci_execute() 用于查询
<?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";
?>
示例 #2 oci_execute() 未指定模式示例
<?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
?>
示例 #3 oci_execute() 和 OCI_NO_AUTO_COMMIT 示例
<?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
?>
示例 #4 具有不同提交模式的 oci_execute() 示例
<?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
?>
示例 #5 oci_execute() 与
OCI_DESCRIBE_ONLY 示例
<?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";
}
?>
注意:
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
CREATEorDROPwill automatically commit any uncommitted transaction.
注意:
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.