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PHP Quiz PHP CertificatePHP mysqli_insert_id() Function
Example
Assume that the Persons table has an auto-generated id field. Return the id used in the last query:
<?php
$con=mysqli_connect("localhost","my_user","my_password","my_db");
// Check connection
if (mysqli_connect_errno($con))
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
mysqli_query($con,"INSERT INTO Persons (FirstName,LastName,Age)
VALUES ('Glenn','Quagmire',33)");
// Print auto-generated id
echo "New record has id: " . mysqli_insert_id($con);
mysqli_close($con);
?>
$con=mysqli_connect("localhost","my_user","my_password","my_db");
// Check connection
if (mysqli_connect_errno($con))
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
mysqli_query($con,"INSERT INTO Persons (FirstName,LastName,Age)
VALUES ('Glenn','Quagmire',33)");
// Print auto-generated id
echo "New record has id: " . mysqli_insert_id($con);
mysqli_close($con);
?>
Definition and Usage
The mysqli_insert_id() function returns the id (generated with AUTO_INCREMENT) used in the last query.
Syntax
mysqli_insert_id(connection);
| Parameter | Description |
|---|---|
| connection | Required. Specifies the MySQL connection to use |
Technical Details
| Return Value: | Returns an integer with the value of the AUTO_INCREMENT field that was updated by the last query. If the number is > max integer value, it will return a string. Returns zero if there were no update or no AUTO_INCREMENT field |
|---|---|
| PHP Version: | 5+ |
PHP MySQLi Reference
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