How do I update a row of data with a button click - php

Question

First of all I am kind of new to PHP.
I've been asked to change up a bit of code and add the option to see the status of a field and mark the rows which are completed. So I've added a status field to my MySQL database which has a standard value of 0. Then on button click I'd like this to change to the value 1. Based on this I can either project a cross glyph icon with a button to update this, or project a checkmark so that the status is "done".
Now I'm having issues with the update part. I just cannot seem to get it to work with clicking the button and updating only that row. Field "prdh_num" is my unique value if that is usefull.
Here's the code I work with:
function uren_error(){
global $mysql;
$sql = "
SELECT *
FROM uren_error, medw
WHERE uren_error.uren_datum between adddate(now(),-14) and now() AND medw.medw_num = uren_error.medw_num
ORDER BY uren_error.prdh_num";
$query = $mysql->query($sql);
echo "<h1>Niet in MKG verwerkte uren van de afgelopen 14 dagen</h1>";
echo "<div class='row' id='urenTabel'>";
echo "<div class='col-xs-0 col-md-0'></div>";
echo "<div class='col-xs-12 col-md-12'>";
echo "<table class='table'>";
echo "<thead>";
echo "<th>Verwerkingsdatum</th>";
echo "<th>Medewerker</th>";
echo "<th>Productieorder</th>";
echo "<th>Productieorder regel</th>";
echo "<th>Bewerking</th>";
echo "<th>Duur</th>";
echo "<th>Status</th>";
echo "<th>Actie</th>";
echo "</thead>";
while($row = mysqli_fetch_array($query)){
$hours = floor($row['uren_tijd_man_std'] / 3600);
$mins = floor($row['uren_tijd_man_std'] / 60 % 60);
echo "<tr>";
echo "<td>" .$row['uren_datum']. "</td>";
echo "<td>" .$row['medw_roepnaam'] . " " . $row['medw_tussenvoegsel'] . " " . $row['medw_naam'] . "</td>";
echo "<td>" .$row['prdh_num']. "</td>";
echo "<td>" .$row['prdr_num']. "</td>";
echo "<td>" .$row['bewerk_num']. "</td>";
echo "<td>" .$hours.":".$mins. "</td>";
if($row['uren_status'] == "0"){
echo "<td><div class='glyphicon glyphicon-remove' style='color:red'></div></td>";
echo "<td><form action'' method='POST'><input type='submit' name=".$row['prdh_num']."></input></form></td>";
} else if($row['uren_status'] == "1"){
echo "<td><div class='glyphicon glyphicon-ok' style='color:green'></div></td>";
}
echo "</tr>";
}
echo "</table>";
}
my update code so far:
$productieorder = $row['prdh_num'];
$updateStatus = "UPDATE uren_error SET uren_status = 1 WHERE prdh_num=".$productieorder."";
$query2 = $mysql->query($updateStatus);

Answer 1

In more simple way you can use <a> tag to update your record ,instead of <form> , just attached your parameter which you need to passed . i.e :
echo "<td><a href='currentphppagename.php?prdh_num=".$row['prdh_num']."'></a></td>";
And to get prdh_num use $_GET on same page i.e :
//check if have some value or not
if (isset($_GET['prdh_num'])) {
//getting value passed in url
$productieorder = $_GET['prdh_num'];
$updateStatus = "UPDATE uren_error SET uren_status = 1 WHERE prdh_num=".$productieorder."";
$query2 = $mysql->query($updateStatus);
}
And other way using form you can have one hidden field and assign row value to that :
echo "<td><form action='' method='POST'><input type='hidden' value=".$row['prdh_num']." name='prdh_num'/><input type='submit' name='submit'></input></form></td>";
Now on click of submit check below on same page :
//check if have some value or not
if (isset($_POST['submit'])) {
//getting value passed in url
$productieorder = $_POST['prdh_num'];
$updateStatus = "UPDATE uren_error SET uren_status = 1 WHERE prdh_num=".$productieorder."";
$query2 = $mysql->query($updateStatus);
}

Answer 2

You can do this with javascript. You should put "ondblclick" event on tr tag.
<tr ondblclick="Update(rowno)" />
And in javascript tag, there must be a function like
<script type="text/javascript">
function Uptdate(row) {
window.location.href ="update.php?row="+row;
}
</script>