从foreach循环中的特定列获取价值

Question

I have a query and I loop through its results to display the records inside a table, and this is working fine.

My table has 5 columns: RecID, Name, Feedback, Score, and Product.

As you can see the loop below will list all 5 columns. What I would like to do is only list 4 of the columns: Name, Feedback, Score, and Product, but store the RecID into a variable called $RecID . Then I will use the $RecID in the Delete link to call the Ajax function to delete the record based on the ID.

How can I exclude a specific column in the display and also capture the RecID value to store in a variable $RecID ?

<?php
    while($dataArray = mysql_fetch_array($queryexe, MYSQL_ASSOC))
    {
        echo "<tr>\n";
        foreach ($dataArray as $col_value) {

            echo "\t<td>$col_value</td>\n";
        }
        //echo "<td><a onclick('deleteRecord(" + $recID + ")'>Delete</a></td>";
        echo "</tr>\n";
    }
?>

Answer 1

Don't use a loop to show the columns, just access the fields you want directly using $dataArray['colname'] .

<?php
while($dataArray = mysql_fetch_array($queryexe, MYSQL_ASSOC))
{
    echo "<tr>\n";
    echo "<td>{$dataArray['Name']}</td><td>{$dataArray['Feedback']}</td><td>{$dataArray['Score']}</td><td>{$dataArray['Product']}</td>";
    echo "<td><a onclick('deleteRecord({$dataArray['RecID']})'>Delete</a></td>";
    echo "</tr>\n";
}
?>

Answer 2

You can modify your foreach loop to get the column name as well as its value. Then, inside the loop, you can check for the specific column name you want and process it differently than the others.

while($dataArray = mysql_fetch_array($queryexe, MYSQL_ASSOC)) {
    echo "<tr>\n";
    foreach ($dataArray as $col_name => $col_value) {
        if ($col_name == 'RecID') {
            echo "<td><a onclick('deleteRecord(" . $col_value . ")'>Delete</a></td>";
        } else {
            echo "\t<td>$col_value</td>\n";
        }
    }
    echo "</tr>\n";
}

You can read about the differences between the two different syntaxes for foreach and how they should be used in the PHP documentation .