Php MySQL update table textarea html - php

Question

I have a table where ResultHRM column contains a textarea where the user can write comments. I would like to know, when I click on submit button how can update the correct line with the textarea content into my MySQL table NContrib ?
I read that textarea cannot have a value attribute.
My table NContrib has the following structure:
+-------------------+--------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------------------+--------------+------+-----+---------+----------------+
| IdVariantNContrib | mediumint(9) | NO | PRI | NULL | auto_increment |
| ID | varchar(30) | YES | | NULL | |
| Reference | varchar(20) | YES | | NULL | |
| ResultHRM | varchar(60) | YES | | NULL | |
+-------------------+--------------+------+-----+---------+----------------+
In my php page, I display this table like that:
<form method='POST' action='SaveValidation.php'>
<?php
require_once 'config.php'; //database connection
$sql='SELECT ID, Reference, ResultHRM FROM NContrib';
$PerformSql=mysqli_query($conn,$sql) or die(mysqli_error($conn));
?>
<table style="width:100%" border='1px' CELLSPACING='0' cellpadding='2'>
<tr>
<th> ID </th>
<th> Reference </th>
<th> ResultsHRM </th>
</tr>
<?php
while($rowNcontrib = mysqli_fetch_assoc($PerformSql)) {
echo "<tr><td> ".$rowNcontrib["ID"]." </td><td> ".$rowNcontrib["Reference"]." </td><td><textarea name='ResultHRM[]' id='ResultHRM[]' cols='30' rows='1'></textarea></td></tr>";
}
?>
</table>
<input type="submit" name="sendEcht" value="Submit" />
</form>

Answer 1

1) use $rowNcontrib['ResultHRM'] in beetween <textarea></textarea> to show value
2) Also use have use name='ResultHRM[]' this will give you a array of textarea values which you have updated but you will not get track of which value belongs to which ID. so name='ResultHRM[$id]'. here id should be the id of row
So your code should be
like
while($rowNcontrib = mysqli_fetch_assoc($PerformSql)) {
$id = $rowNcontrib["ID"];
echo "<tr><td> ".$rowNcontrib["ID"]." </td><td> ".$rowNcontrib["Reference"]." </td><td><textarea name='ResultHRM[$id]' id='ResultHRM[]' cols='30' rows='1'>".$rowNcontrib['ResultHRM ']."</textarea></td></tr>";
}
now in page SaveValidation.php check for this
if(isset($_POST['sendEcht'])){
echo "<pre>";print_r($_POST);die;}
this will show you something like this
Array
(
[ResultHRM] => Array
(
[3] => hello its test
[11] => test string
[10] =>
)
[sendEcht] => Submit
)
// here 3,11, 10 are my id's of table in your case it will be the id's of your table then you can easily update your table `ResultHRM` field

Answer 2

There are certain points that I would like to mention here:
If ResultHRM field is going to hold the values from textarea in form, I would suggest that you change the datatype. Currently, its varchar(60). I suggest, it should be text.
After fetching the data from the database, you are displaying it in the table structure. I would suggest, you add textarea and fill it with existing value. Let's assume you named textarea ResultHRM_ta
Once you will follow point#2, and submit the form, you can have textarea value in $_POST['ResultHRM_ta'] on SaveValidation.php.
Save the value in database.
Please note, I have mentioned the very basic outline for the process you need to follow. You will have to take care of security measures and coding standards on your own.

Answer 3

Tow solve this you can call a AJAX request with the code and pass id for each in the javascript method.
and in html code in the you can call method in each table row as follows:
<table style="width:100%" border='1px' CELLSPACING='0' cellpadding='2'>
<tr>
<th> ID </th>
<th> Reference </th>
<th> ResultsHRM </th>
</tr>
<?php
while($rowNcontrib = mysqli_fetch_assoc($PerformSql)) {
echo "<tr><td> ".$rowNcontrib["ID"]." </td><td> ".$rowNcontrib["Reference"]." </td><td><textarea name='ResultHRM' id='ResultHRM' cols='30' rows='1'></textarea></td><td><button type='button' onclick='update(".$rowNcontrib["ID"].")'">Update</button>;
}
?>
</table>