PHP empty() function not work in empty array

Question

I need to check empty input when post form data. I Have this Code :

foreach(array_filter($_POST['video']) as $video_url){   
    if (!empty($video_url)) {

    echo 'true';

    }
        else
    {

    echo 'false';

    }
}

But this code not work for empty input. I print_r($_POST['video']) when send empty input(before foreach code) and see this result:

Array ( [0] => )

how do check empty input in my case?!

@syedmohamed: for not empty work true and show true message but for empty input not work and not show any result. — Perspolis
– Perspolis, Commented Aug 26, 2015 at 11:10
if(isset($_POST['video']) && $_POST['video'] !="") Out side foreach — Karthik Keyan
– Karthik Keyan, Commented Aug 26, 2015 at 11:13

Michael · Accepted Answer · 2015-08-26 11:12:52Z

3

Your array_filter is making the array empty and you can't iterate over an empty array.

You should use:

$video = array_filter($_POST['video']);

if (empty($video))
{
  echo 'false';
}

answered Aug 26, 2015 at 11:12

Michael

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Comments

sanderbee · Accepted Answer · 2015-08-26 11:11:27Z

2

Use this:

// removes all NULL, FALSE and Empty Strings but leaves 0 (zero) values
$result = array_filter( $array, 'strlen' );

Taken from the PHP.net website.

answered Aug 26, 2015 at 11:11

sanderbee

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Comments

Vishu238 · Accepted Answer · 2015-08-26 11:13:01Z

2

Try this

 if (sizeof($video_url)!=0) {

    echo 'true';

    }
        else
    {

    echo 'false';

    }

answered Aug 26, 2015 at 11:13

Vishu238

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Comments

CodeRomeos · Accepted Answer · 2015-08-26 11:28:46Z

0

You can use string functions. Check this out;

foreach(array_filter($_POST['video']) as $video_url)
{
    if (strlen(str_replace(' ','',$video_url))==0)
    {
        return false;
    }
    else
    {
        return true;
    }
}

answered Aug 26, 2015 at 11:28

CodeRomeos

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