search-arrays.php

<?php

$names = ['Tina', 'Dana', 'Mike', 'Amy', 'Adam'];
$compare = ['Tina', 'Dean', 'Mel', 'Amy', 'Michael'];
$needle = ['Tina', 'Dean', 'Mel', 'Amy', 'Michael'];


// function isInArray($needle, $array) {

//   $result = array_search($needle, $array);

//   	if ($result !== false) {
//   		return true;
//   	} else {
//   		return false;
//   	}
// }


// function compareArrays($names, $compare) {
//   $count=0; 
//   foreach($names as $name) {
//   	$result = array_search($name, $compare);

//   	if ($result !== false) {
//   		$count++;
//   	} 
//   }
//   	return $count;
// }  	

// echo isInArray("Tina", $names). PHP_EOL;
// echo compareArrays($names, $needle). PHP_EOL;


function pushArrays($names, $compare) {
  $array = [];
  foreach ($names as $key => $name) {
    if ($names[$key] == $compare[$key]) {
      array_push($array, $names[$key]);
    } else {
      array_push($array, $names[$key]);
      array_push($array, $compare[$key]);
      }
  }
  return $array;
}

print_r(pushArrays($names, $compare));

?>