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Answer 1

A:

Here's a link to a function that'll remove the empty elements in a PHP array: http://www.bitrepository.com/remove-empty-values-from-an-array-in-php.html

pop850 2010-08-02 01:05:00

Answer 2

+3 A:

Try

array_filter( //remove elements that evaluate to FALSE (includes empty ones)
    array_map('trim', //trim space around tags
        array_map('strip_tags', //remove html tags from the... tags
            explode(",", $_POST['tag'])))); //separate on comma

Artefacto 2010-08-02 01:05:50

Clever nestedness there! +1, but for a beginner, this may be confusing.

alex 2010-08-02 01:09:42

this strips out my tags and still enters an empty value :(

pHpNUT 2010-08-02 01:25:00

@pHp See here: http://codepad.viper-7.com/X5GReo

Artefacto 2010-08-02 01:27:27

@alex You mean like "0"? Because that's about the only one. In any case, if he wants "0", he can specify a callback to `array_filter`.

Artefacto 2010-08-02 01:28:29

@Artefacto Yeah sorry, I realised that quickly and deleted the comment.

alex 2010-08-02 01:37:05

Answer 3

A:

This will remove the blank tags:

$tags = explode(",", $_POST['tag']);
$new_set  = array();

foreach ($tags as $tag){

  if ($tag == ''){

    $new_set[] = $tag;
  }
}

$tags = implode(',', $new);

// now store $tags into your database.

phirschybar 2010-08-02 01:06:09

There are a few mistakes there... `$new` will be null. And you are adding array members if the value is equal to an empty string.

alex 2010-08-02 01:07:32

Answer 4

A:

Will remove all empty array elements.

 foreach($tags as $key => $tag) {
   if (empty($tag)) unset($tags[$key]);
 }

alex 2010-08-02 01:06:21

Answer 5

A:

If you run

explode(",", ",apple,pear,banana");

You'll get an array like this one:

array('', 'apple', 'pear', 'banana');

The explode() function splits the string whereever there is a comma. There are three commas, which means it will split the string into four. Because there is nothing before the first comma in the input string, it means the first result will be an empty string.

If you don't want this, you'll need to filter out any empty strings from the result of explode(). You can use array_filter() for this:

array_filter(explode(",", ",apple,pear,banana"));

thomasrutter 2010-08-02 01:54:35

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