PHP Delete Empty array

$fangId = Postget (' Houseid '); Get Address bar value
$tempArray = Array_filter (Explode (' _ ', $fangId), "filter"); Divide an array by __ and delete an empty array

if (Is_array ($tempArray) &&!empty ($tempArray))//To determine whether an array has a value
{
Print_r ($tempArray); Test output
}
Else
{
Message (' Please select for comparison real estate ', ' list.php ');
}

/*
function filter ($var) handler
{
if ($var = = ")
{
return false;
}
return true;
}
*/

Test method:/compare.php?houseid=2306__2307__2303__2308

Method Two

Function Array_to_hashmap (& $arr, $keyField, $valueField = null)
{
$ret = Array ();
if ($valueField) {
foreach ($arr as $row) {
$ret [$row [$keyField]] = $row [$valueField];
}
} else {
foreach ($arr as $row) {
$ret [$row [$keyField]] = $row;
}
}
return $ret;
}