字段为空时如何使用类隐藏DIV？

Question

I have a PHP While statement on my page. I would like to hide DIV with the class name "coupon" for each record that has empty field $rows['deal']; . This is what my code currently looks like. How can I alter to accomplish this. Thank You much!!!

<?php while ($rows = mysql_fetch_array($query)) { ?>        <!-- QUERY FOR PAGE 1 RECORDS -->
<div id="main">
<div id="client_name"><?php echo $rows['client_name']; ?></div>
<div id="phone"><?php echo $rows['phone']; ?></div>
<div id="client_square"></div>
<div id="client_rectangle"></div>
<img id="client_img" src="<?php echo $rows['client_img']; ?>">
<a id="edit" href="update_edit.php?id=<?php echo $rows['id']; ?>"><img id="edit_img" src="images/edit_record.png"></a>
<span class="coupon" id="cash_img"></span><span class="coupon" id="deal_text"><?php echo $rows['deal']; ?></span>
</div>
<?php } ?>  

Answer 1

You can do this on this way:

<?php if($rows['deal']){ ?>
<span class="coupon" id="cash_img"></span><span class="coupon" id="deal_text"><?php echo $rows['deal']; ?></span>
<?php } ?>

Full code

<?php while ($rows = mysql_fetch_array($query)) { ?>        <!-- QUERY FOR PAGE 1 RECORDS -->
<div id="main">
<div id="client_name"><?php echo $rows['client_name']; ?></div>
<div id="phone"><?php echo $rows['phone']; ?></div>
<div id="client_square"></div>
<div id="client_rectangle"></div>
<img id="client_img" src="<?php echo $rows['client_img']; ?>">
<a id="edit" href="update_edit.php?id=<?php echo $rows['id']; ?>"><img id="edit_img" src="images/edit_record.png"></a>
<?php if($rows['deal']){ ?>
<span class="coupon" id="cash_img"></span><span class="coupon" id="deal_text"><?php echo $rows['deal']; ?></span>
<?php } ?>
</div>
<?php } ?>

Answer 2

Try below code:

<?php while ($rows = mysql_fetch_array($query)) { ?>
    <!-- QUERY FOR PAGE 1 RECORDS -->
    <div id="main">
        <div id="client_name"><?php echo $rows['client_name']; ?></div>
        <div id="phone"><?php echo $rows['phone']; ?></div>
        <div id="client_square"></div>
        <div id="client_rectangle"></div>
        <img id="client_img" src="<?php echo $rows['client_img']; ?>">
        <a id="edit" href="update_edit.php?id=<?php echo $rows['id']; ?>"><img id="edit_img" src="images/edit_record.png"></a>
        <?php if($rows['deal']){ ?>
            <span class="coupon" id="cash_img"></span><span class="coupon" id="deal_text"><?php echo $rows['deal']; ?></span>
        <?php } ?>
    </div>
<?php } ?>

Answer 3

You do not need javascript for this, add this line:

<?php echo ($rows['deal']==""?"style='display:none;'":"") ?>

Complete code:

<?php while ($rows = mysql_fetch_array($query)) { ?>        <!-- QUERY FOR PAGE 1 RECORDS -->
<div id="main">
<div id="client_name"><?php echo $rows['client_name']; ?></div>
<div id="phone"><?php echo $rows['phone']; ?></div>
<div id="client_square"></div>
<div id="client_rectangle"></div>
<img id="client_img" src="<?php echo $rows['client_img']; ?>">
<a id="edit" href="update_edit.php?id=<?php echo $rows['id']; ?>"><img id="edit_img" src="images/edit_record.png"></a>
<span class="coupon" <?php echo ($rows['deal']==""?"style='display:none;'":"") ?> id="cash_img"></span><span class="coupon" id="deal_text"><?php echo $rows['deal']; ?></span>
</div>
<?php } ?>  

Answer 4

with PHP:

You can just count if row has a data so echo it: this is row with data:

<?php
        $row = 'you can add get rows from database';
        if (count($row)) {
            ?>
            <div style="color: red">
                <?php echo $row;  // here you can add your row (foreach) ?>
            </div>
        <?php } ?>

this is row with out data

  <?php
    $row = '';
    if (count($row)) {
        ?>
        <div style="color: red">
            <?php echo $row;  // here you can add your row (foreach) ?>
        </div>
    <?php } ?>

Answer 5

If the field is empty, it will have a length of 0. So you can use that logic in order to hide the 'coupon' class

    <?php while ($rows = mysql_fetch_array($query)) { ?>        <!-- QUERY FOR PAGE 1 RECORDS -->
    <div id="main">
    <div id="client_name"><?php echo $rows['client_name']; ?></div>
    <div id="phone"><?php echo $rows['phone']; ?></div>
    <div id="client_square"></div>
    <div id="client_rectangle"></div>
    <img id="client_img" src="<?php echo $rows['client_img']; ?>">
    <a id="edit" href="update_edit.php?id=<?php echo $rows['id']; ?>"><img id="edit_img" src="images/edit_record.png"></a>

<!-- My code -->
    <?php
    if(strlen($rows['deal'] > 0)
        {
    ?>
    <span class="coupon" id="cash_img"></span><span class="coupon" id="deal_text"><?php echo $rows['deal']; ?></span>
    <?php
        }
    ?>
<!-- End of my code --> 
    </div>
    <?php } ?>  

Answer 6

We can use something like this .

<?php if($fildvalue != ''){ ?>
<div><?php  echo $fildvalue; ?> </div>
<?php } ?>

so div will be created only when their is an value

Answer 7

Check the data row and put all the HTML tags which you want to hide in case if it is empty or not set.

<?php if(isset($rows['deal']) && !empty($rows['deal'])){ ?>
    <span class="coupon" id="deal_text"><?php echo $rows['deal']; ?></span>
<?php } ?>

In PHP, empty() function is able to check NULL value , empty string and zero in return.