How to insert multiple inputs with same input name - php

Question

Assume that i have table: transactions with 7 columns:id, date, amount, detail, type, purpose, location. I want to be able to input 3 rows once i click on submit button. In my confiq.php there is connection set up in variable $query.
This is the code that I have in my insertmultiple.php (later it will be included in my overview.php in a table as 3 rows).
Problem: I want to insert 3 lines of data from html form into new rows in table. Do yousee where I make mistake? I have a feeling its somewhere where I start condition if.
Thanks to everyone.
<?php
include('config.php');
$date = $_POST['date'];
$detail = $_POST['detail'];
$type = $_POST['type'];
foreach( $date as $key => $d ) {
$sql = "INSERT INTO transactions (date, detail, type)
VALUES ('$date[$key]', '$detail[$key]', '$type[$key]')";
if ( $sql === TRUE) {
mysqli_query ($query,$sql);
} else {
echo "Error: " . $sql . "<br>" . $query->error;
}
}
?>
<form method="post" action="">
<tr>
<input type="text" name="date[]" />
<input type="text" name="detail[]" />
<input type="text" name="type[]" />
</tr>
<tr>
<input type="text" name="date[]" />
<input type="text" name="detail[]" />
<input type="text" name="type[]" />
</tr>
<tr>
<input type="text" name="date[]" />
<input type="text" name="detail[]" />
<input type="text" name="type[]" />
</tr>
<input type="submit" name="submit" id="submit_button" style="width: 50px">
</form>

Answer 1

After preparing the mysqli_connect in ($CONNECTION):
$CONNECTION = mysqli_connect("IP_ADDRESS", "MYSQL_USER", "MYSQL_PASS", "MYSQL_DBNAME");
then:
foreach( $date as $key => $d ) {
$sql = "INSERT INTO transactions (date, detail, type)
VALUES ('$date[$key]', '$detail[$key]', '$type[$key]')";
if ( !(mysqli_query($CONNECTION, $sql) === TRUE) ) {
echo "Error: " . mysqli_error($CONNECTION) . "<br>" . $sql->error;
}
}

Answer 2

Your test is wrong, $sql will never be true, it is a string. Try this :
<?php
include('config.php');
$date = $_POST['date'];
$detail = $_POST['detail'];
$type = $_POST['type'];
foreach( $date as $key => $d ) {
$sql = "INSERT INTO transactions (date, detail, type) VALUES ('$date[$key]', '$detail[$key]', '$type[$key]')";
if (mysqli_query ($query,$sql) === FALSE) {
echo "Error: " . $sql . "<br>" . $query->error;
}
}
?>
<form method="post" action="">
<tr>
<input type="text" name="date[]" />
<input type="text" name="detail[]" />
<input type="text" name="type[]" />
</tr>
<tr>
<input type="text" name="date[]" />
<input type="text" name="detail[]" />
<input type="text" name="type[]" />
</tr>
<tr>
<input type="text" name="date[]" />
<input type="text" name="detail[]" />
<input type="text" name="type[]" />
</tr>
<input type="submit" name="submit" id="submit_button" style="width: 50px">
</form>
EDIT : I'm assuming config.php defines $query var and open the connection. That being said, you should really use PDO and prepared statements to avoid SQL injection.

Answer 3

try this code:
note: read the comments
<?php
include('config.php');
//added an if statment to check if the user have pressed submit (<input type="submit" **name="submit"** id="submit_button" style="width: 50px">)
// this will insure that the query wont start unless data has been sent
if (isset($_POST['submit'])) {
$date = $_POST['date'];
$detail = $_POST['detail'];
$type = $_POST['type'];
foreach ($date as $key => $d) {
$sql = "INSERT INTO transactions (date, detail, type) VALUES ('$date[$key]', '$detail[$key]', '$type[$key]')";
// if ($sql === TRUE) { //the $sql will not be true it will be the equal to to the string of the query
// mysqli_query($query, $sql);
// } else {
// echo "Error: " . $sql . "<br>" . $query->error;
// }
if (!mysqli_query($query, $sql)) { //tries to perform the query, if it doesnt work prints the error
echo "Error: " . $sql . "<br>" . $query->error;
}
}
}
?>
<form method="post" action="">
<tr>
<input type="text" name="date[]" />
<input type="text" name="detail[]" />
<input type="text" name="type[]" />
</tr>
<tr>
<input type="text" name="date[]" />
<input type="text" name="detail[]" />
<input type="text" name="type[]" />
</tr>
<tr>
<input type="text" name="date[]" />
<input type="text" name="detail[]" />
<input type="text" name="type[]" />
</tr>
<input type="submit" name="submit" id="submit_button" style="width: 50px">
</form>

Answer 4

Hi there, good example. I had the same problem and there is a difference between grant all privileges on *.* to root#localhost identified by 'password' and grant all privileges on *.* to root#'%' identified by 'password'
if you are using root on localhost you might as well just wanna run the grant all privileges on *.* to root#localhost identified by 'password'
For Your HTML and PHP scrip have
<?php
include 'db_config.php';
if (isset($_POST['date']) && isset($_POST['detail']) && isset($_POST['type'])) {
$date = $_POST['date'];
$detail = $_POST['detail'];
$type = $_POST['type'];
for ($i = 0; $i < count($date); $i++) {
$sql = "INSERT INTO transcations (date, detail, type) " .
" VALUES ('$date[$i]', '$detail[$i]', '$type[$i]')";
//$conn is the name of your connection string
$results = mysqli_query($conn, $sql);
if (!$results) {
echo "Error: " . $sql . "<br>" . $query->error;
}
}
}
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<form method="post" action="">
<table>
<tr>
<td>
<input type="text" name="date[]" />
</td>
<td>
<input type="text" name="detail[]" />
</td>
<td>
<input type="text" name="type[]" />
</td>
</tr>
<tr><td>
<input type="text" name="date[]" />
</td>
<td>
<input type="text" name="detail[]" />
</td>
<td>
<input type="text" name="type[]" />
</td>
</tr>
<tr>
<td>
<input type="text" name="date[]" />
</td>
<td>
<input type="text" name="detail[]" />
</td>
<td>
<input type="text" name="type[]" />
</td>
</tr>
<tr>
<td>
<input type="submit" name="submit" id="submit_button" style="width: 50px">
</td>
</tr>
</table>
</form>
</body>
</html>