Storing multiple inputs in database in single query - php

Question

<form method="post" action="formProcessing.php">
<input type="text" name="uses[]">
<input type="text" name="uses[]">
<input type="text" name="uses[]">
</form>
I have two database tables one called info other uses. info table contain column name inf_num, Is there a way where i can get the last row inf_num and insert the above inputs in uses in one query. For instance if i was to do it manually i would check the last row myself so if it's 10 i would do the below:
INSERT INTO uses (id, uses) VALUES (10, 'useZero'), (10, 'useOne'), (10, 'useTwo');
How would i go about doing it dynamically with php using the above form:

Answer 1

you can create trigger on uses table to set last inserted id of info table.
CREATE TRIGGER uses_before_insert_trigger BEFORE INSERT ON `uses` FOR EACH ROW
BEGIN
SET NEW.id = (select id from info order by id desc LIMIT 1);
END
After, create trigger you can execute insert query directly.
INSERT INTO uses (uses) VALUES ('10'),('20'),('26');

Answer 2

INSERT INTO user( id, uses )
SELECT MAX(id), 'userOne' FROM info
UNION ALL
SELECT MAX(id), 'userTwo' FROM info;

Answer 3

Try To Make A Query Like This
<?php
//Your input is array of your input.
$yourInput = array(10,20,26);
$query = "INSERT INTO uses (id, uses) VALUES ";
foreach($yourInput as $value ){
$query .= "(10, '$value')".",";
}
echo $query;
//Output
INSERT INTO uses (id, uses) VALUES (10, '10'),(10, '20'),(10, '26')
Tested Here
Than Execute this Query
But Remember Youe code is not secure. it is possible to do a sql injection so kindly read this note. and make it more secure.

Answer 4

We can make it possible via query as well.
INSERT INTO uses( id, uses ) VALUES ((SELECT MAX(inf_num) from info),
'useOne', (SELECT MAX(inf_num) from info), 'useTwo', (SELECT MAX(inf_num) from
info), 'useThree')