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The mysql_insert_id() function returns the AUTO_INCREMENT ID generated from the previous INSERT operation.
mysql_insert_id()函数的作用是:取得上一步 INSERT 操作产生的 ID。
This function returns 0 if the previous operation does not generate an AUTO_INCREMENT ID, or FALSE on MySQL connection failure.
如果先前的操作不产生一个自动增加的ID[AUTO_INCREMENT ID],那么,函数返回0;如果MySQL连接失败,将返回False。
mysql_insert_id(connection) |
Parameter参数 | Description描述 |
---|---|
connection | Optional. Specifies the MySQL connection. If not specified, the last connection opened by mysql_connect() or mysql_pconnect() is used. 可选参数。指定MySQL连接。如果不指定该参数,那将默认使用通过mysql_connect()函数或mysql_pconnect()函数最后一次打开的连接 |
Note: Be sure to call mysql_insert_id() immediately after a query to get the correct value.
注意:你必须确定已经在一条查询语句之后请求了mysql_insert_id()函数以获取正确的值。
<?php $con = mysql_connect("localhost", "peter", "abc123"); if (!$con) { die('Could not connect: ' . mysql_error()); } $db_selected = mysql_select_db("test_db",$con); $sql = "INSERT INTO person VALUES ('Børge','Refsnes','Sandnes','17')"; $result = mysql_query($sql,$con); echo "ID of last inserted record is: " . mysql_insert_id()); mysql_close($con); ?> |
The output of the code above could be:
上述代码将输出下面的结果:
ID of last inserted record is: 5 |