db2_last_insert_id

(PECL ibm_db2 >= 1.7.1)

db2_last_insert_id — Returns the auto generated ID of the last insert query that successfully executed on this connection

说明

db2_last_insert_id ( resource $resource ) : string

Returns the auto generated ID of the last insert query that successfully executed on this connection.

The result of this function is not affected by any of the following:

A single row INSERT statement with a VALUES clause for a table without an identity column.
A multiple row INSERT statement with a VALUES clause.
An INSERT statement with a fullselect.
A ROLLBACK TO SAVEPOINT statement.

参数

resource: A valid connection resource as returned from db2_connect() or db2_pconnect(). The value of this parameter cannot be a statement resource or result set resource.

返回值

Returns the auto generated ID of last insert query that successfully executed on this connection.

范例

Example #1 A db2_last_insert_id() example

The following example shows how to return the auto generated ID of last insert query that successfully executed on this connection.


<?php

$database = "SAMPLE";
$user = "db2inst1";
$password = "ibmdb2";

$conn = db2_connect($database, $user, $password);
if($conn) {
    $createTable = "CREATE TABLE lastInsertID 
      (id integer GENERATED BY DEFAULT AS IDENTITY, name varchar(20))";
    $insertTable = "INSERT INTO lastInsertID (name) VALUES ('Temp Name')";

    $stmt = @db2_exec($conn, $createTable);

    /* Checking for single row inserted. */
    $stmt = db2_exec($conn, $insertTable);
    $ret =  db2_last_insert_id($conn);
    if($ret) {
        echo "Last Insert ID is : " . $ret . "\n";
    } else {
        echo "No Last insert ID.\n";
    }
    
    db2_close($conn);
}
else {
    echo "Connection failed.";
}
?>

以上例程会输出：

Last Insert ID is : 1

User Contributed Notes

Mark Adkins 10-Jun-2010 09:28


On the iSeries and maybe other db2 platforms, this function is not defined--PHP Fatal error:  Call to undefined function  db2_last_insert_id().



The alternative is to use IDENTITY_VAL_LOCAL().



The above example becomes:



<?php



$database = "SAMPLE";

$user = "db2inst1";

$password = "ibmdb2";



$conn = db2_connect($database, $user, $password);

if($conn) {

    $createTable = "CREATE TABLE lastInsertID 

      (id integer GENERATED BY DEFAULT AS IDENTITY, name varchar(20))";

    $insertTable = "INSERT INTO lastInsertID (name) VALUES ('Temp Name')";

    $getIdentity = "SELECT IDENTITY_VAL_LOCAL() AS LASTID FROM SYSIBM.SYSDUMMY1";



    $stmt = @db2_exec($conn, $createTable);



    /* Checking for single row inserted. */

    $stmt = db2_exec($conn, $insertTable);



    $stmt = db2_exec($conn, $getIdentity);

    $row = db2_fetch_assoc($stmt);

    $ret = $row['LASTID'];



    if($ret) {

        echo "Last Insert ID is : " . $ret . "\n";

    } else {

        echo "No Last insert ID.\n";

    }

    

    db2_close($conn);

}

else {

    echo "Connection failed.";

}

?>