Insert values in an associative array but only if have value

Question

I've this bucle:

foreach($jsonU as $j) {
        $jsonUId = $j->id;
        $jsonUName = $j->name;
        $jsonUDescription = $j->description;
        $jsonUDate = $j->date;
        $jsonUStatus = $j->status;
        $jsonUPicture = $j->picture;

        $jsonUncompleted[] = array('id'=> $jsonUId, 'name'=> $jsonUName, 'description' => $jsonUDescription, 'date' => $jsonUDate, 'status' => $jsonUStatus, 'picture' =>$jsonUPicture);
}

I need to insert a key in the array only if have value. For example, $jsonUPictore not always has a value and in that case I don't need to write that key.

Some help?

So you're saying that not all of the fields are always going to be present in the array, right? — Joe Majewski
– Joe Majewski, Commented Jun 29, 2012 at 16:45

biziclop · Accepted Answer · 2012-06-29 16:44:34Z

4

You could use the array_filter function with or without a parameter:

http://www.php.net/manual/en/function.array-filter.php

Example:

$jsonUncompleted[] = array_filter( array(
  'id'=> $jsonUId, 'name'=> $jsonUName, 'description' => $jsonUDescription,
  'date' => $jsonUDate, 'status' => $jsonUStatus, 'picture' =>$jsonUPicture
));

answered Jun 29, 2012 at 16:44

biziclop

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1 Comment

biziclop Over a year ago

Be careful, because without a filter parameter, it will filter out every falsy value like 0, "", false, etc.

Joe Majewski · Accepted Answer · 2012-06-29 16:48:29Z

0

If you are wanting to remove all NULL values from an array there's an easy way to do it using the array_filter function the last poster mentioned:

$new_array_without_nulls = array_filter($array_with_nulls, 'strlen');

Source: http://briancray.com/posts/remove-null-values-php-arrays/

answered Jun 29, 2012 at 16:48

Joe Majewski

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