how to make an image title array - php

Question

I am using the following code to populate images from MySQL database. I want to have image_title for every image which will be a textbox below the image. I know how to populate it but how can I make it named so when user changes the title it will only change for the specific image?
<?php
$mysql_command = "CALL sp_populate_member_article_media(:param_article_guid, :param_member_id)";
$mysql_query = $mysql_connection->prepare($mysql_command);
$mysql_query->bindParam(':param_article_guid', $_GET["aid"], PDO::PARAM_STR);
$mysql_query->bindParam(':param_member_id', $_SESSION["volow_member_id"], PDO::PARAM_STR);
$mysql_query->execute();
while($mysql_row = $mysql_query->fetch())
{
list($width, $height) = getimagesize($_SESSION["volow_absolute_path"] . "/gallery/members/" . $_SESSION["volow_member_guid"] . "/" . $_SESSION["volow_channel_guid"] . "/" . $_GET["aid"] . "/". $mysql_row['file_name'] . ".png");
if ($width > 650) { $width = 650; };
if ($height > 271) { $height = 271; };
?>
<tr><td align="right" valign="top"><img src="<?php echo $_SESSION["volow_domain_name"]; ?>gallery/members/<?php echo $_SESSION["volow_member_guid"]; ?>/<?php echo $_SESSION["volow_channel_guid"]; ?>/<?php echo $_GET["aid"]; ?>/<?php echo $mysql_row['file_name']; ?>.png" width="<?php echo $width; ?>" height="<?php echo $height; ?>" /></td></tr>
<tr><td><hr></td></tr>
<?php } ?>

Answer 1

You need to give a specific name for input files of each image. You need a unique identifier for each image for this purpose.
Assuming you have file_id field for each image, you can generate form elements as follows:
<input type="text" name="title<?=$mysql_row['file_id']?>" />
Then when handling form submission, you need to iterate over $_POST array to find out which image ids were submitted:
foreach ($_POST as $name => $value) {
if (substr($name, 0, 5) == 'title') {
$id = (int) substr($name, 5);
$title = $value;
$sql = "UPDATE imagetable SET title = " . mysqli_real_escape_string($title) . " WHERE id = " . $id;
...
// run sql
...
}
}