PHP - If null value

Question

I have the following coding:

<div class="product-top-icons">
  <div class="energy-rating-1"><img src="http://www.justhome.co/skin/frontend/default/just2011/images/assets/<?php echo $_product->getAttributeText('energy_rating_one');?>.jpg"></div>
  <div class="energy-rating-2"><img src="http://www.justhome.co/skin/frontend/default/just2011/images/assets/<?php echo $_product->getAttributeText('energy_rating_two');?>.jpg"></div>
  <div class="energy-rating-3"><img src="http://www.justhome.co/skin/frontend/default/just2011/images/assets/<?php echo $_product->getAttributeText('energy_rating_three');?>.jpg"></div>
  <div class="guarantee-icon"><img src="http://www.justhome.co/skin/frontend/default/just2011/images/assets/<?php echo $_product->getAttributeText('warranty');?>.jpg"></div>
</div>

I would like to add an if statement in there basically to say the following:

If the value in the 'energy_rating_one' attribute is null then don't display the division energy-rating-1, if the 'energy_rating_two' attribute is null then don't display the div energy-rating-2 and so on...

Where's the php in this?

Dogbert
– Dogbert

2011-06-28 13:43:23 +00:00
Commented Jun 28, 2011 at 13:43 — Dogbert
– Dogbert, Commented Jun 28, 2011 at 13:43

Christophe · Accepted Answer · 2011-06-28 13:45:28Z

4

something like this:

<?php if($_product->getAttributeText('energy_rating_one') !== null): ?>
<div class="energy-rating-1"><img src="http://www.justhome.co/skin/frontend/default/just2011/images/assets/<?php echo $_product->getAttributeText('energy_rating_one');?>.jpg"></div>
<?php endif; ?>

and that for all the others as well.

answered Jun 28, 2011 at 13:45

Christophe

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3 Comments

Svish Over a year ago

Depending on your taste, if( ): and endif is an alternative. (I thin it looks better when mixed in with html like this)

KingCrunch Over a year ago

Either use is_null(), or use !==. Just != isn't sufficient, when 0, "" and so on should be valid.

Christophe Over a year ago

@Svish yes you are right, if(): endif is beter for frontend. if{} is better for backend. I do mix them together sometimes :)

check123 · Accepted Answer · 2011-06-28 13:47:58Z

0

 <?php
   function echoIfExists($argument) {
      $val = $_product->getAttributeText($argument);
      if($val)
           /*your echo stmt*/
   }

echoIfExists('energy_rating_one');
 /** continue here*/

 ?>

answered Jun 28, 2011 at 13:47

check123

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Comments

Cups · Accepted Answer · 2011-06-28 13:54:55Z

0

Make it easy on yourself. Just change the css class rules from energy-rating-1 to energy-rating-one and echo the variable you already have i.e energy-rating-one

answered Jun 28, 2011 at 13:54

Cups

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Comments

jeanmatthieud · Accepted Answer · 2011-06-28 13:56:11Z

0

You have a function "int_to_words" to transform "int" value into a text value in this post: http://www.php.net/manual/en/function.strval.php#41988

After that, you just have to iterate into all values

for(i = 0; i < 100; i++) {
    $item = 'energy_rating_'.int_to_words($i);
    if($_product->getAttributeText($item) != null){
      echo "<div class=\"energy_rating_$i\"><img src=\"http://www.justhome.co/skin/frontend/default/just2011/images/assets/".$_product->getAttributeText($item).".jpg\"></div>";
    }
}

answered Jun 28, 2011 at 13:56

jeanmatthieud

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Comments

izip · Accepted Answer · 2011-06-28 13:46:36Z

-3

Look at short hand if statement:

http://www.scottklarr.com/topic/76/ternary-php-short-hand-ifelse-statement/

$total==1 ? "is 1 item" : 
      "are ".($total == 0 ? "no items" : "$total items"

answered Jun 28, 2011 at 13:46

izip

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