'if exists' ?

[simonp]

Hi,

 

I want to display some variables but only if they exist (ie have something in them)

 

At the moment I have:

 

<textarea rows="6" name="bankaddress" style="width: 200px;"><?php echo $branch . ", " . $address1 . ", " . $address2 . ", " . $address3 . ", " . $address4 . ", " . $town . ", " . $county . ", " . $postcode; ?></textarea>

 

. . . which displays everything - but $address2, $address3 and $address4 are often empty. How can I say print $address2, a comma and a space unless $address2 is empty then ignore it?

 

Cheers

 

Simon

[AV1611]

if(isset($variable)){

  do_this();}

else{

  do_that();

  }

[AV1611]

sorry for posting again, but

 

you would do the above like this

 

if(!isset($var)){$var=something}

 

Now you will have a value that you can either use or ignore, but no error

[simonp]

ok - so now I'm using:

 

<textarea rows="6" name="bankaddress" style="width: 200px;"><?php if(isset($address1)){echo $address1 . ", ";} if(isset($address2)){echo $address2 . ", ";} if(isset($address3)){echo $address3 . ", ";} if(isset($address4)){echo $address4 . ", ";} if(isset($town)){echo $town . ", ";} if(isset($county)){echo $county . ", ";} if(isset($postcode)){echo $postcode . ", ";} ?></textarea>

 

Which produces:

 

Chapel Lane, , , , Formby, Merseyside, L37 4DN, 

 

So I'm guessing the values mustn't be empty - is there a way round this (I can't edit the values)?

[lemmin]

Why can't you edit the values?

 

You could try:

if (strlen($address1) > 1 || ord($address1[0]) > 32)

 

The idea behind this is that, if $address1 has more than one character in it, it must be something of value. But just in case it has only one character that is of value, check if it is a good kind of character (not whitespaces and stuff.)

 

This could be a lot easier if you changed the values.

[kenrbnsn]

Instead of using the individual variables, I would use a temporary array:

 

<?php
$vars = array('branch','address1','address2','address','address4','town','county','postcode');
$tmp = array();
foreach ($vars as $v)
   if (isset($$v))
       $tmp[] = $$v;
echo '<textarea rows="6" name="bankaddress" style="width: 200px;">' . implode(', ',$tmp) . "</textarea>";
?>

 

Note: untested.

 

Ken