I have an array
$array = array('key1' => null, 'key2' => null, 'key3' => null, 'key4' => null);
i would like to determine if all the array keys have empty values if so then return false. the above example should return false as it does not have any value. but if one or more keys have any values then it should return true for example the below example is true.
$array = array('value1', 'key2' => value2, 'value3', 'key4' => value4);
Assuming you actually mean an array like
array('key1' => null, 'key2' => null, 'key3' => null, 'key4' => null)
the answer is simply using array_filter
if (!array_filter($array)) {
// all values are empty (where "empty" means == false)
}
Your assumption is incorrect. array('key1', 'key2', 'key3', 'key4') has 4 values and keys in the range 0..3.
array('key1', 'key2' => value2, 'key3', 'key4' => value4) has the value key1 (with key 0), the key key2, the value key3 (with key 1) and the key key4.
print_r($array) then you should see how you array looks like. blagovest is completly right.If you need to check if all values are null
$allNull = true;
foreach( $array as $key => $val ) {
if( is_null( $array[$key] ) ) {
$allNull = false;
break;
}
}
// Do what you will with $allNull
$array = array('key1' => null, 'key2' => null, 'key3' => null, 'key4' => null);
The answer is
$filterArray = array_filter($array);
if(count($filterArray) == 0){
return false;
}else{
return true;
}
Array ( [0] => key1 [1] => key2 [2] => key3 [3] => key4 )andArray ( [0] => key1 [key2] => value2 [1] => key3 [key4] => value4 )respectively.