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PHP Quiz PHP CertificatePHP mysql_insert_id() Function
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);
?>
$con = mysql_connect("localhost", "peter", "abc123");
if (!$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
Complete PHP MySQL Reference
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