<?php
namespace NN\Helper;
class ArrayExtention {
    public static function ToInsert($data, $table = 'test', $wht = '') {
        if (count($data) > 0) {
            $keys = array_keys($data[0]);
            $query = 'INSERT INTO ' . $table . ' (' . implode(', ', array_map(function($u) {
                return "`$u`";
            }, $keys)) . ')';

            $query .= "\nSELECT " . implode(', ', array_map(function($g) {
                return "a.$g";
            }, $keys)) . ' FROM (';

            $query .= implode("\n UNION ALL \n", array_map(function($w) use ($keys) {
                $selectQuery = 'SELECT ' . implode(', ', array_map(function($q) use ($w) {
                    if ($w[$q] !== null) {
                        return '"' . addslashes($w[$q]) . "\" `$q`";
                    } else {
                        return "\"-\" `$q`";
                    }
                }, $keys));
                return $selectQuery;
            }, $data));

            $query .= ') a';

            if (is_array($wht)) {
                $query .= ' LEFT JOIN ' . $table . ' ON ' . implode(' AND ', array_map(function($whtx) use($table) {
                    return " $table.$whtx = a.$whtx ";
                }, $wht));

                $query .= ' WHERE ' . implode(' AND ', array_map(function($whtx) use($table) {
                    return " $table.$whtx IS NULL ";
                }, $wht));
            }

            return $query;
        } else {
            return [];
        }
    }
}