[RESOLVED] checking for an empty array value?

ade1982


$string = $info3['remarks'];

$substring2 = substr($string, 1);
$pieces = explode('|', $substring2, -1);
// it works if I echo pieces[0] or [2] here

$i=2;
while ($pieces[i] != " "){
	echo "<p>";
	echo $pieces[i];
	echo "</p>";
	echo $i;
	$i++;
}

hi,

I have a problem with this, I cannot get it to echo anything (other than the value of $i and the loop is non-terminating ... I am not sure how to test for an empty array value

Any help, as ever, muchly appreciated.

laserlight

What is your code supposed to do?

devinemke

$string = 'aaa|bbb||ccc|ddd';
$array = explode('|', $string);
foreach ($array as $value)
{
	if ($value != '') {echo '<p>' . $value . '</p>';}	
}

ade1982

devinemke wrote:

$string = 'aaa|bbb|ccc|ddd';
$array = explode('|', $string);
foreach ($array as $value)
{
	if ($value != '') {echo '<p>' . $value . '</p>';}	
}

Thanks so much

that does the trick for printing to screen, but for long and boring reasons, I need to start at the array[2] value, in this case 'ccc'. Can you help me do that, please?

laserlight

$string = 'aaa|bbb|ccc|ddd';
$array = explode('|', $string);

for ($i = 2; $i < count($array); ++$i)
{
    if ($array[$i] != '')
    {
        echo '<p>' . $array[$i] . '</p>';
    }
}

Do you understand how the code works?

EDIT:
forgot to change loop body.

jjfletch

<?

$string = 'aaa|bbb|ccc|ddd';   

$array = explode('|', $string);
foreach ($array as $key => $value)
{
    if($key > 1) {
    if ($value != '') {echo '<p>' . $value . '</p>';}
    }
} 

?>

ade1982

Thanks, I think I need to read a bit more on associative arrays.

Karma to all of you.

laserlight

In this case, you should treat it as a numerically indexed array. Treating it as an associative array with foreach is useful if you do not need to reference the indices, but in this case you start from a particular index.