Recursively check value empty or not - php

Question

I have to check if items with keys 2, 3, 4, 5 in the sub array with index 0 are empty or not. If empty, I need to throw an exception.
If not empty, then move to next iteration, checking items with keys 3, 4, 5, 6 in the sub array with index 1, and so on.
Items with keys 0 and 1 will always be empty so nothings need to be done with them.
So, check for items with key > 1 then 4-4 pair check if anyone is empty and then throw an exception.
here is my code
$array = array(
array('0' => '','1' => '','2' => 'Wasatch standard','3' => 'Wasatch standard','4' => '3,5,2','5' => 'English','6' => '','7' => '','8' => ''),
array('0' => '','1' => '','2' => '','3' => 'ThisIsAtest','4' => 'Wasatch standard1','5' => '3,4,5','6' => 'English','7' => '','8' => ''),
array('0' => '','1' => '','2' => '','3' => '','4' => 'Wasatch standard1.1','5' => 'Wasatch standard1.1','6' => '2','7' => 'Mathematics','8' =>''),
);
for($i=0;$i<count($array);$i++){
checkRecursivelyIfEmpty($array[$i],array('2'+$i,'3'+$i,'4'+$i,'5'+$i));
}
function checkRecursivelyIfEmpty($value,$sumValue){
foreach ($sumValue as $k => $v) {
if(empty($value[$v])){
throw new Exception("Error Processing Request");
}
}
}

Answer 1

The following function first checks whether the input is an array indeed, then checks for the indexes to be empty. If not, then it throws an exception. Furthermore, it traverses the array to see if there are inner arrays. If so, then it recursively checks them as well. After the function there is a quick demonstration of usage.
function checkThings($inputArray, $subArray) {
//If it is not an array, it does not have the given indexes
if (!is_array($inputArray)) {
return;
}
//throws exception if one of the elements in question is not empty
foreach ($subArray as $key) {
if ((isset($inputArray[$key])) && (!empty($inputArray[$key]))) {
throw new Exception("My Exception text");
}
}
//checks for inner occurrences
foreach ($inputArray as $key => $value) {
if (is_array($inputArray[$key])) {
checkThings($inputArray[$key], $subArray);
}
}
}
//Calls checkThings for all elements
for ($index = 0; $index < count($myArray); $index++) {
checkThings($myArray[$index], array($index + 2, $index + 3, $index + 4, $index + 5));
}

Answer 2

Use foreach and check using empty($value)
foreach ($array as $key => $value) {
$value = trim($value);
if (empty($value))
echo "$key empty <br/>";
else
echo "$key not empty <br/>";
}

Answer 3

Assuming the array is named $a you can use this code. The outer loops iterates over all the arrays. The inner loop iterates from $i+2 to $i+5 (in the case of $i=0, you get 2, 3, 4 and 5) on the sub arrays. The function empty() checks that the item is set and not equal to false (for instance, an empty string).
for($i=0; $i<count($a); $++)
for($j=$i+2; $j<$i+6; $j++)
if(empty($a[$i][$j]))
//Raise an error!