$value) { $value = ($keep_keys === TRUE) ? $value : array_values($value); foreach ($value as $k => $v) { $new_array[$k][$key] = $v; } } return $new_array; } public static function remove($key, & $array) { if ( ! array_key_exists($key, $array)) return NULL; $val = $array[$key]; unset($array[$key]); return $val; } public static function extract(array $search, $keys) { $keys = array_slice(func_get_args(), 1); $found = array(); foreach ($keys as $key) { if (isset($search[$key])) { $found[$key] = $search[$key]; } else { $found[$key] = NULL; } } return $found; } public static function unshift_assoc( array & $array, $key, $val) { $array = array_reverse($array, TRUE); $array[$key] = $val; $array = array_reverse($array, TRUE); return $array; } public static function map_recursive($callback, array $array) { foreach ($array as $key => $val) { $array[$key] = is_array($val) ? arr::map_recursive($callback, $val) : call_user_func($callback, $val); } return $array; } public static function binary_search($needle, $haystack, $sort = FALSE) { if ($sort) { sort($haystack); } $high = count($haystack) - 1; $low = 0; while ($low <= $high) { $mid = ($low + $high) >> 1; if ($haystack[$mid] < $needle) { $low = $mid + 1; } elseif ($haystack[$mid] > $needle) { $high = $mid - 1; } else { return $mid; } } return FALSE; } public static function merge() { $total = func_num_args(); $result = array(); for ($i = 0; $i < $total; $i++) { foreach (func_get_arg($i) as $key => $val) { if (isset($result[$key])) { if (is_array($val)) { $result[$key] = arr::merge($result[$key], $val); } elseif (is_int($key)) { array_push($result, $val); } else { $result[$key] = $val; } } else { $result[$key] = $val; } } } return $result; } public static function overwrite($array1, $array2) { foreach (array_intersect_key($array2, $array1) as $key => $value) { $array1[$key] = $value; } if (func_num_args() > 2) { foreach (array_slice(func_get_args(), 2) as $array2) { foreach (array_intersect_key($array2, $array1) as $key => $value) { $array1[$key] = $value; } } } return $array1; } public static function range($step = 10, $max = 100) { if ($step < 1) return array(); $array = array(); for ($i = $step; $i <= $max; $i += $step) { $array[$i] = $i; } return $array; } public static function to_object(array $array, $class = 'stdClass') { $object = new $class; foreach ($array as $key => $value) { if (is_array($value)) { $value = arr::to_object($value, $class); } $object->{$key} = $value; } return $object; } public static function get($array, $key, $default = NULL) { return isset($array[$key]) ? $array[$key] : $default; } }