webcron-site/Libraries/db/query.php

68 lines
1.6 KiB
PHP

<?php
namespace db;
class Query {
private $table_name;
private array $columns_querying = array();
private int $limit=0;
private string $order_by;
public function __construct(string $table_name){
$this->table_name = $table_name;
}
public function set_columns($columns){
if (is_array($columns)){
$this->columns_querying = $columns;
}
}
public function set_limit(int $limit){
if ($limit > 0){
$this->limit = $limit;
}
}
public function set_order_by_column (string $order_by){
$this->order_by = $order_by;
}
private function get_columns(){
$column_string="";
if (count($this->columns_querying) === 0){
$column_string="*";
} else {
$columns = implode(',', $this->columns_querying);
$column_string=$columns;
}
return $column_string;
}
private function get_limit() {
$modifier="";
if ($this->limit > 0){
$modifier=" LIMIT {$this->limit}";
}
return $modifier;
}
private function get_order_by(){
$order_by="";
if (!empty($this->order_by)){
$order_by=" ORDER BY {$this->order_by}";
}
return $order_by;
}
private function get_where() {
$where = "";
return $where;
}
public function get_query_string(){
$query = "SELECT {$this->get_columns()} FROM {$this->table_name}{$this->get_where()}{$this->get_order_by()}{$this->get_limit()};";
return $query;
}
}
?>