I have the following array:
array(5) { ["destino"]=> string(11) "op_list_gen" ["id_terminal"]=> string(0) "" ["marca"]=> string(2) "--" ["tipo"]=> string(2) "--" ["lyr_content"]=> string(14) "aawaw" } How can I remove the values "--" and empty values from the array?
I have tried using a foreach and removing the elements found with unset but it´s not working.
foreach ($array as $key => $arra) { if(array_key_exists('--', $array)){ unset($arra[$key]); } } You can use array_filter to solve this:
$arr = [ "destino" => "op_list_gen", "id_terminal" => "", "marca" => "--", "tipo" => "--", "lyr_content" => "aawaw" ]; $newArr = array_filter($arr, function($value) { return !in_array($value, ['', '--']); }); 
$array = [ "destino" => "op_list_gen", "id_terminal" => "", "marca" => "--", "tipo" => "--", "lyr_content" => "aawaw" ]; $new_array = array_filter($array, function($item){ if($item != '--' || $item != '') return $item; }) var_dump($new_array) array_filter() will take each entry and return it if it's not -- or ''
array_filter() normally returns true/false to either keep or remove the item.Generic approach should look like that:
$filter = function(...$excluded) { return function ($value) use ($excluded) { return !in_array($value, $excluded); }; }; $newArray = array_filter($array, $filter('', '--')); This approach is reusable, because you don't need to hardcode values right insight your filtering function.
You could remove values by simply looping over the array, creating a new array in the process:
$myarray = array( "destino" => "op_list_gen", "id_terminal" => "", "marca" => "--", "tipo" => "--", "lyr_content" => "aawaw", } $newarray = array(); foreach($myarray as $key => $value) { if($value != "--" && $value != "") { $newarray[$key] = $value; } } Or, more elegantly, you could use the array_filter function. It takes a callback function that, for each value, decides whether to include it. This also returns a new array:
$newarray = array_filter($myarray, function($elem) { if($elem != "" && $elem != "--") return $elem; }); 
As all the other answers say, array_filter is a good way to go about that. However, this is returning a new array and doesn't actually modify the original array. If that's what you're looking for, this might be a different approach:
// Start infinite loop while(true){ // Check for value in array if (($key = array_search('--', $arr)) !== false || ($key = array_search('', $arr)) !== false) { // Unset the key unset($arr[$key]); // Reset array keys $arr = array_values($arr); } else { // No more matches found, break the loop break; } } Use array_filter:
$original = [ 'destino' => 'op_list_get', 'id_terminal' => '', 'marca' => '--', 'tipo' => '--', 'lyr_content' => 'aawaw', ]; // values you want to filter away $disallowArray = ['', '--']; $filteredResult = array_filter($original, function($val) use($disallowArray) { // check that the value is not in our disallowArray return \in_array($val, $disallowArray, true) === false; }); Result:
Array ( [destino] => op_list_get [lyr_content] => aawaw ) 