mysqli_insert_id

mysqli->insert_id

(PHP 5)

mysqli->insert_id — Returns the auto generated id used in the last query

说明

Procedural style:

int mysqli_insert_id ( mysqli $link )

Object oriented style (property):

mysqli

int$insert_id;

The mysqli_insert_id() function returns the ID generated by a query on a table with a column having the AUTO_INCREMENT attribute. If the last query wasn't an INSERT or UPDATE statement or if the modified table does not have a column with the AUTO_INCREMENT attribute, this function will return zero.

Note: Performing an INSERT or UPDATE statement using the LAST_INSERT_ID() function will also modify the value returned by the mysqli_insert_id() function.

参数

link: Procedural style only: A link identifier returned by mysqli_connect() or mysqli_init()

返回值

The value of the AUTO_INCREMENT field that was updated by the previous query. Returns zero if there was no previous query on the connection or if the query did not update an AUTO_INCREMENT value.

Note: If the number is greater than maximal int value, mysqli_insert_id() will return a string.

范例

Example#1 Object oriented style


<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");

/* check connection */
if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}

$mysqli->query("CREATE TABLE myCity LIKE City");

$query = "INSERT INTO myCity VALUES (NULL, 'Stuttgart', 'DEU', 'Stuttgart', 617000)";
$mysqli->query($query);

printf ("New Record has id %d.\n", $mysqli->insert_id);

/* drop table */
$mysqli->query("DROP TABLE myCity");

/* close connection */
$mysqli->close();
?>

Example#2 Procedural style


<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");

/* check connection */
if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}

mysqli_query($link, "CREATE TABLE myCity LIKE City");

$query = "INSERT INTO myCity VALUES (NULL, 'Stuttgart', 'DEU', 'Stuttgart', 617000)";
mysqli_query($link, $query);

printf ("New Record has id %d.\n", mysqli_insert_id($link));

/* drop table */
mysqli_query($link, "DROP TABLE myCity");

/* close connection */
mysqli_close($link);
?>

上例将输出：

New Record has id 1.


	PHP5中文手册 mysqli_init mysqli_kill mysqli PHP Manual mysqli_insert_id mysqli->insert_id (PHP 5) mysqli->insert_id — Returns the auto generated id used in the last query 说明 Procedural style: int mysqli_insert_id ( mysqli `$link` ) Object oriented style (property): mysqli int`$insert_id`; The mysqli_insert_id() function returns the ID generated by a query on a table with a column having the AUTO_INCREMENT attribute. If the last query wasn't an INSERT or UPDATE statement or if the modified table does not have a column with the AUTO_INCREMENT attribute, this function will return zero. Note: Performing an INSERT or UPDATE statement using the LAST_INSERT_ID() function will also modify the value returned by the mysqli_insert_id() function. 参数 `link` Procedural style only: A link identifier returned by mysqli_connect() or mysqli_init() 返回值 The value of the AUTO_INCREMENT field that was updated by the previous query. Returns zero if there was no previous query on the connection or if the query did not update an AUTO_INCREMENT value. Note: If the number is greater than maximal int value, mysqli_insert_id() will return a string. 范例 Example#1 Object oriented style <?php $mysqli = new mysqli("localhost", "my_user", "my_password", "world"); /* check connection / if (mysqli_connect_errno()) { printf("Connect failed: %s\n", mysqli_connect_error()); exit(); } $mysqli->query("CREATE TABLE myCity LIKE City"); $query = "INSERT INTO myCity VALUES (NULL, 'Stuttgart', 'DEU', 'Stuttgart', 617000)"; $mysqli->query($query); printf ("New Record has id %d.\n", $mysqli->insert_id); / drop table / $mysqli->query("DROP TABLE myCity"); / close connection / $mysqli->close(); ?> Example#2 Procedural style* <?php $link = mysqli_connect("localhost", "my_user", "my_password", "world"); /* check connection / if (mysqli_connect_errno()) { printf("Connect failed: %s\n", mysqli_connect_error()); exit(); } mysqli_query($link, "CREATE TABLE myCity LIKE City"); $query = "INSERT INTO myCity VALUES (NULL, 'Stuttgart', 'DEU', 'Stuttgart', 617000)"; mysqli_query($link, $query); printf ("New Record has id %d.\n", mysqli_insert_id($link)); / drop table / mysqli_query($link, "DROP TABLE myCity"); / close connection */ mysqli_close($link); ?> 上例将输出： New Record has id 1. mysqli_init mysqli_kill mysqli PHP Manual