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PHP mysql_insert_id() Function

PHP MySQL Reference Complete PHP MySQL Reference

Definition and Usage

The mysql_insert_id() function returns the AUTO_INCREMENT ID generated from the previous INSERT operation.

This function returns 0 if the previous operation does not generate an AUTO_INCREMENT ID, or FALSE on MySQL connection failure.

Syntax

mysql_insert_id(connection)

Parameter Description
connection Optional. Specifies the MySQL connection. If not specified, the last connection opened by mysql_connect() or mysql_pconnect() is used.

Tips and Notes

Note: Be sure to call mysql_insert_id() immediately after a query to get the correct value.

Example

<?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:

ID of last inserted record is: 5

PHP MySQL Reference Complete PHP MySQL Reference
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