How to insert Commitment dates for each unit

I had this question after viewing Adding additional variables to key => value association.

Hopefully this will be the last piece of the puzzle. I have text fields for each unit where a commitment date must be entered. I am using a foreach loop but when I var_dump it I can see way too many units.

Here is my html table. I am storing the unit key in a hidden field

<tr>
<td>{$thing}</td>
<td>{$row_data}</td>
<td>{$out_xwhen[$thing]}</td>
<td><input type="text" class="form-control" name="commit_date[]" placeholder="Commitment date" id="date"><input type="hidden" name="u_key[]" value="{$thing}"></td>
</tr>

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The UPDATE query :

foreach($_POST['commit_date'] as $commitdate) {
$stmt = $link->prepare("UPDATE `units` SET `commit_date` = ? WHERE `u_key` = ?");
$stmt->bind_param("si", $commitdate, $_POST['u_key']);
$stmt->execute();
$stmt->close();

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When testing, if I var_dump the commitment date, I get three dates for 3 text fields and the output matches what I inputted. The units however looked like this.

array(3) { [0]=> string(6) "905467" [1]=> string(6) "675483" [2]=> string(6) "501786" } array(3) { [0]=> string(6) "905467" [1]=> string(6) "675483" [2]=> string(6) "501786" } array(3) { [0]=> string(6) "905467" [1]=> string(6) "675483" [2]=> string(6) "501786" }
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Black SulfurAsked:
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Ray PaseurCommented:
text fields for each unit where a commitment date...
If it's a date, you probably want to use a DATE field for that column.

To go any further with this we should see the CREATE TABLE statements and the queries you're using.  We also need to see the fully resolved HTML that is in play.
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Black SulfurAuthor Commented:
Thanks, Ray. In the database I am using a DATE field for that column, but a text input in the HTML with a date picker. I will post all the required code when I get back onto my development pc.

Regarding the created table statements, I create all my tables and columns in phpMyadmin. Would I manually need to type out the CREATE TABLE statements for you or is there a way to generate them from already created tables in phpMyadmin?
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Ray PaseurCommented:
You can generate them with SHOW CREATE TABLE - very handy!

You might want to learn about the "Laravel way" of creating database migrations and seeding.  In practice, it stumbles over Git branches a little bit, but it gives you a clear path from the "big bang" of application origin to a current state for your database.  Also very handy!
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Black SulfurAuthor Commented:
Aha, nice one! Okay, so I hope this is enough info. Please let me know if not. 

CREATE TABLE `units` (
 `id` int(11) NOT NULL AUTO_INCREMENT,
 `u_key` int(11) NOT NULL,
 `entry_date` date NOT NULL,
 `commit_date` date NOT NULL,
 `complete_date` date NOT NULL,
 PRIMARY KEY (`id`)

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CREATE TABLE `defects` (
 `d_key` int(11) NOT NULL AUTO_INCREMENT,
 `non_green_desc` text NOT NULL,
 PRIMARY KEY (`d_key`)

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CREATE TABLE `units_and_defects` (
 `id` int(11) NOT NULL AUTO_INCREMENT,
 `u_key` int(11) NOT NULL,
 `d_key` int(11) NOT NULL,
 PRIMARY KEY (`id`)

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here is the php and query that fetches the data:

if (!($stmt = $link->prepare("SELECT units.u_key AS u, non_green_desc, entry_date FROM units, defects, units_and_defects WHERE defects.d_key = units_and_defects.d_key AND units.u_key = units_and_defects.u_key ORDER BY u DESC"))) echo 'Prepare Error: (' . $link->errno . ') ' . $link->error;
$stmt->execute();
$result = $stmt->get_result();
$numRows = $result->num_rows;

if ($numRows > 0) {
	$out_key = [];
	$out_xwhen = [];
	$old = FALSE;
	while ($row = $result->fetch_object()) {
		if ($row->u != $old) {
			$old = $row->u;
			$out_key[$row->u] = $row->non_green_desc;
			$out_xwhen[$row->u] = $row->entry_date;
		}
		else {
			$out_key[$row->u].= ', ' . $row->non_green_desc;
		}
	}

	foreach($out_key as $thing => $row_data) {
		$show_repair = <<<REPAIRUNITS
				
				<tr>
					<td>{$thing}</td>
					<td>{$row_data}</td>
					<td>{$out_xwhen[$thing]}</td>
					<td><input type="text" class="form-control" name="commit_date[]" placeholder="Commitment date" id="date"><input type="hidden" name="u_key[]" value="{$thing}"></td>
				</tr>
				
				
				
REPAIRUNITS;
		echo $show_repair;

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The code to insert the commitment dates into the units table:

foreach($_POST['commit_date'] as $commitdate) {
$stmt = $link->prepare("UPDATE `repair_tanks` SET `commit_date` = ? WHERE `u_key` = ?");
$stmt->bind_param("si", $commitdate, $_POST['u_key']);
$stmt->execute();
$stmt->close();

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Black SulfurAuthor Commented:
Hi Ray, did I leave out any info?
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Black SulfurAuthor Commented:
I tried adding a second foreach but that just takes the input from the last textfield and inserts the same data for every row. 

foreach($_POST['commit_date'] as $commitdate) {
foreach($_POST['u_key'] as $unit) {
$stmt = $link->prepare("UPDATE `repair_tanks` SET `commit_date` = ? WHERE `u_key` = ?");
$stmt->bind_param("si", $commitdate, $unit);
$stmt->execute();
$stmt->close();

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Black SulfurAuthor Commented:
I seem to have been forsaken on this particular question but I got it to work using a FOR loop instead of FOREACH. Hoorah!
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Ray PaseurCommented:
stale question
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