Updating a field from an sql table from php - php

Question

I have a table with more columns. On one column I have 3 buttons for each row with different queries associated. When I click one of the buttons, field in the table from my database should update.The problem is that when I click on a button on any row in the table, it updates only the field from the first row.For example, I have a table with 10 rows.If I click one of the buttons on the 10th row IT will update my first row, not the 10th one as I want. Is there any possibility to solve this?
This is the code..I'm sorry it is too long:
<?php
$query = "SELECT * FROM masculin ORDER BY id_concurent";
$result = mysqli_query($link ,$query);
$row = mysqli_fetch_assoc($result);
if(isset($_POST['locul1']))
{
$sql = "UPDATE masculin SET Premiu=1 WHERE CNP='".$row['CNP']."'";
mysqli_query($link,$sql);
header("Location:administrare.php");
}
else if(isset($_POST['locul2']))
{
$sql = "UPDATE masculin SET Premiu=2 WHERE CNP='".$row['CNP']."'";
mysqli_query($link,$sql);
header("Location:administrare.php");
}
else if(isset($_POST['locul3']))
{
$sql = "UPDATE masculin SET Premiu=3 WHERE CNP='".$row['CNP']."'";
mysqli_query($link,$sql);
header("Location:administrare.php");
} ?>
<u><i><h1 align="center">Administrare concurenti</h1></i></u>
<u><i><h2>MASCULIN</h2></i></u>
<?php
$query = "SELECT * FROM masculin ORDER BY id_concurent";
$result = mysqli_query($link ,$query);
if (mysqli_num_rows($result) == 0) {
echo 'Inca nu s-a inscris niciun concurent.';
} else {
?>
<table width="100%">
<tr>
<th>Nr.<br />concurs</th>
<th>Nume</th>
<th>Prenume</th>
<th>CNP</th>
<th>Categoria</th>
<th>Varsta</th>
<th>Premiu</th>
<th>Modifica<br />rezultat</th>
<th>Descalifica</th>
</tr>
<?php while($row = mysqli_fetch_assoc($result)){ ?>
<tr>
<?php
$query1="SELECT id_concurent FROM concurenti WHERE CNP='".$row['CNP']."'";
$result1=mysqli_query($link,$query1);
$nr_conc=mysqli_fetch_assoc($result1);
?>
<td> <?php echo $nr_conc['id_concurent'] ?> </td>
<td> <?php echo $row['Nume'] ?> </td>
<td> <?php echo $row['Prenume'] ?> </td>
<td> <?php echo $row['CNP'] ?> </td>
<td> <?php echo $row['Categorie'] ?> </td>
<td> <?php echo $row['Varsta'] ?> </td>
<td> <?php echo $row['Premiu'] ?> </td>
<td>
<form action="administrare.php" method="post">
<input type="submit" name="locul1" value="Premiul 1">
<input type="submit" name="locul2" value="Premiul 2">
<input type="submit" name="locul3" value="Premiul 3">
</form>
</td>
</tr>
<?php } ?>
</table> <?php } ?>

Answer 1

for updated the da tbale row when you submit the values related to a html table row you should add and hidden input with the value that let you reach the correct row eg:
<form action="administrare.php" method="post">
<input type="submit" name="locul1" value="Premiul 1">
<input type="submit" name="locul2" value="Premiul 2">
<input type="submit" name="locul3" value="Premiul 3">
<input type="hidden" name="CNP" value="<?php echo $row['CNP'] ?>">
</form>
and in your sql updated query add the POST value related to the row
$sql = "UPDATE masculin SET Premiu=1 WHERE CNP='".$_POST['CNP']. "'";