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<?php
class HelperArray {
/**
* Convert $delimiter delimited string to array
*
* @param mixed $string
* @param string $delimiter
* @return array
*/
public static function stringToArray($string, $delimiter = ',') {
return is_string($string) && !empty($string) ? explode($delimiter, $string) : array();
}
* Convert single value to array
* @param mixed $value
public static function makeArray(&$value, $index = 0) {
return !is_array($value) ? array($index => $value) : $value;
* @param mixed $array
* @param callable $callback
public static function filter(&$array, $callback) {
$result = array();
if (is_array($array) && !empty($array)) {
foreach ($array as $value) {
if (call_user_func($callback, $value)) {
$result[] = $value;
return $result;
protected static function isNotEmpty($value) {
return !empty($value);
* Filter empty() values from array
* @param $array
public static function filterEmpty($array) {
return static::filter($array, array(get_called_class(), 'isNotEmpty'));
public static function stringToArrayFilterEmpty($string, $delimiter = ',') {
return static::filterEmpty(static::stringToArray($string, $delimiter));
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