Display <div> based on php variable

[larry29936]

I'm trying to display an html <div> based on the state of a variable set during php execution . The variable is $chk and is set to either 0 or 1 with 0 meaning failed and 1 meaning  pass. Here's the code:

if <?php echo "{$chk}";?> == 0
  <div class="container">
      <div class="row" style="color:red">
        <br><br><br><br><br><br>  
        <center>Database Update Failed</center>
      </div>
  </div>

else
  <div class="container">
      <div class="row">
        <br><br><br><br><br><br>  
        <center>Database Updated</center>
      </div>
  </div>

 Both of the <div>'s display after the completion of the php instead of the one based on the $chk variable. I've tried several ways to get the value of $chk but neither print_r nor echo seem to work. $chk is set to 0 at the start of the php execution.

Thanks in advance, Larry

Edited June 19, 2020 by larry29936
additioal info

[gw1500se]

Your 'if' makes no sense. 'if' is a PHP statement yet you are starting PHP after the if. Also you are testing the result of 'echo' not the value of $chk. I am guessing but I think you want:

<?php if ($chk == 0) { ?>
.
.
.
<?php } else { ?>
.
.
.
<?php } ?>

That having been said, it is a poor way to program. You should do something more like:

<?php
if ($chk} == 0) {
echo "
  <div class="container">
      <div class="row" style="color:red">
        <br><br><br><br><br><br>  
        <center>Database Update Failed</center>
      </div>
  </div>"
}
else {
echo "
  <div class="container">
      <div class="row">
        <br><br><br><br><br><br>  
        <center>Database Updated</center>
      </div>
  </div>"
}
?>

 

Edited June 19, 2020 by gw1500se

[gw1500se]

Correction: Add \ in front of the " that do not start or end the echo.

[larry29936]

@gw1500se  OK, using your code as follows:

 

       $stmt = $pdo->prepare("UPDATE files SET filename = '$srcname', logtime=now() WHERE id = 4");
        $stmt->execute() ;    
	$chk=1;
 }


if ($chk == 0) {
echo \"
  <div class="container">
      <div class="row" style="color:red">
        <br><br><br><br><br><br>  
        <center>Database Update Failed</center>
      </div>
  </div>"
}

else {
echo \"
  <div class="container">
      <div class="row">
        <br><br><br><br><br><br>  
        <center>Database Updated</center>
      </div>
  </div>"
}
?>

I  get the following error on the line with the echo:

Parse error: syntax error, unexpected '"' (T_CONSTANT_ENCAPSED_STRING), expecting identifier (T_STRING) in /home/larry/web/test/public_html/update.php on line 141

[larry29936]

I found a solution as follows:

<?php if($chk == 0): ?>
  <div>stuff....</div>
<?php else: ?>
  <div>other stuff...</div>
<?php endif; ?>

 

[gw1500se]

You needed to escape the " as I said in my correction.