Php Get Auto Generated Primary Key
Php Create Table Auto_increment
I thought this would be relevant to all the people using mysqli and looking for the ID after INSERT command :
<?php
function insert_join($catid, $disc_id) {
// insert a new item into the database
$conn = db_connect();
// insert new item
$demande = 'insert into categories_disc values (', '.$catid.', '.$disc_id.')';
$resultat = $conn->query($demande);
if (!$resultat) {
return false;
} else {
return $conn->insert_id; // function will now return the ID instead of true.
}
}
?>
Then, on the other side, let us call this function as follows :
<?php
$cat_id = insert_join($catid, $disc_id);
if($cat_id ! false) {
echo '<p>Category stuff was added to the database as follows : <br>';
echo '<hr>ID de la category : '.$cat_id.'</p><hr>';
}
?><?php
$link = mysqli_connect('localhost', 'my_user', 'my_password', 'world');
/* check connection */
if (mysqli_connect_errno()) {
printf('Connect failed: %sn', mysqli_connect_error());
exit();
}
mysqli_query($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);
?>Php Auto Increment Primary Key
For MyISAM tables, you can specify AUTOINCREMENT on a secondary column in a multiple-column index. Tf2 crate key generator no survey. In this case, the generated value for the AUTOINCREMENT column is calculated as MAX(autoincrementcolumn) + 1 WHERE prefix=given-prefix. This is useful when you want to put data into ordered groups. Sep 05, 2017 PHP MySQL get last inserted row Auto Increment id phpmyadmin 4.5.1. Auto Number Generate Using PHP - Duration. How to Create a Unique String in PHP Generate a Key. The first is PRIMARY KEY, which as the name suggests, forces the specified column to behave as a completely unique index for the table, allowing for rapid searching and queries. While SQL Server only allows one PRIMARY KEY constraint assigned to a single table, that PRIMARY KEY can be defined for more than one column.