PHP echo text if variable is blank

Question

I am trying to echo €00.00 if my variable $amount equals zero

I have done something wrong can you help??

Code

while ($row9 = mysql_fetch_array($result9))
{
$amount = $row9['amount'];
}
//$amount = $amount / 60;
//$amount = round($amount, 2);
if $amount == 0 echo "<b>Balance: &#8364;00.00</b>";
else
echo "<b>Balance: $$amount</b>";

Matthew Flaschen · Accepted Answer · 2010-05-23 20:49:07Z

3

You need to put the if/else in the loop, and you have some invalid syntax (missing parens and double $). So:

while ($row9 = mysql_fetch_array($result9))
{
  $amount = $row9['amount'];
  if ($amount == 0)
  { 
    echo "<b>Balance: &#8364;00.00</b>";
  }
  else
  {
    echo "<b>Balance: $amount</b>";
  }
}

answered May 23, 2010 at 20:49

Matthew Flaschen

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Comments

score 1 · Accepted Answer · 2010-05-23 20:58:36Z

1

You are adding extra $ to the $amount, try this:

if ($amount == 0) {
   echo "<b>Balance: &#8364;00.00</b>";
} else {
  echo "<b>Balance: $amount</b>";
}

In fact you can make your code a bit more readable/standard like this:

if ($amount == 0)
{
  echo "<b>Balance: &#8364;00.00</b>";
}
else
{
  echo "<b>Balance: $amount</b>";
}

edited May 23, 2010 at 20:58

answered May 23, 2010 at 20:49

Web Logic

5 Comments

Matthew Flaschen Over a year ago

The parentheses around the condition are required. It's not a question of readability.

waiwai933 Over a year ago

The parentheses are still missing the in the first code example.

Web Logic Over a year ago

@waiwai933: I had corrected an error in the OP's code, posted his code there and that is the reason later I suggested him a better coding style.

waiwai933 Over a year ago

@Web No doubt. Nevertheless, you still were suggesting that he use the first example, which was the reason we were pointing that there were no parentheses.

webbiedave Over a year ago

In your last example, if the database returns '0.00' for amount, if (!$amount) will evaluate as false.

Peter Horne · Accepted Answer · 2010-05-23 20:52:49Z

0

I've moved the if statement inside the while loop, cleaned up the code and removed the extra $ sign that was on the last line.

while ($row9 = mysql_fetch_array($result9)) {
    if ($row9['amount']) == 0 {
        echo "<b>Balance: &#8364;00.00</b>";
    } else {
        echo "<b>Balance: $row9['amount']</b>";
    }    
}

answered May 23, 2010 at 20:52

Peter Horne

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