Php 一种最小化sql查询的方法
我希望尽可能减少sql查询,以节省服务器上的一些负载。提交表单时,我有一个mysql查询Php 一种最小化sql查询的方法,php,mysql,wordpress,Php,Mysql,Wordpress,我希望尽可能减少sql查询,以节省服务器上的一些负载。提交表单时,我有一个mysql查询 $updateglobal_products_data = array( 'products_type' => tep_db_prepare_input($HTTP_POST_VARS['products_type']), 'global_category_id' => tep_db_prepare_
$updateglobal_products_data = array(
'products_type' => tep_db_prepare_input($HTTP_POST_VARS['products_type']),
'global_category_id' => tep_db_prepare_input($HTTP_POST_VARS['global_categories']),
'display_product' => tep_db_prepare_input($HTTP_POST_VARS['display_product']),
'products_description' => tep_db_prepare_input(strip_tags($HTTP_POST_VARS['products_description'][1])),
'products_name' => tep_db_prepare_input(stripslashes($HTTP_POST_VARS['products_name'][1])),
'products_image' => $products_image->filename,
'products_last_modified' => tep_db_prepare_input($gcurrent_datetime),
'products_quantity' => (int)tep_db_prepare_input($HTTP_POST_VARS['products_quantity']),
'products_model' => tep_db_prepare_input($HTTP_POST_VARS['products_model']),
'products_price' => $products_price,
'products_date_available' => $products_date_available,
'products_weight' => (float)tep_db_prepare_input($HTTP_POST_VARS['products_weight']),
'products_status' => tep_db_prepare_input($HTTP_POST_VARS['products_status']),
'products_tax_class_id' => tep_db_prepare_input($HTTP_POST_VARS['products_tax_class_id']),
'manufacturers_id' => (int)tep_db_prepare_input($HTTP_POST_VARS['manufacturers_id']));
$sql_data_array = array('products_quantity' => (int)tep_db_prepare_input($HTTP_POST_VARS['products_quantity']),
'products_type' => tep_db_prepare_input($HTTP_POST_VARS['products_type']),
'img_display' => tep_db_prepare_input($HTTP_POST_VARS['image_display']),
'products_model' => tep_db_prepare_input($HTTP_POST_VARS['products_model']),
'products_price' => tep_db_prepare_input($HTTP_POST_VARS['products_price']),
'products_date_available' => $products_date_available,
'products_weight' => (float)tep_db_prepare_input($HTTP_POST_VARS['products_weight']),
'products_status' => tep_db_prepare_input($HTTP_POST_VARS['products_status']),
'products_tax_class_id' => tep_db_prepare_input($HTTP_POST_VARS['products_tax_class_id']),
'manufacturers_id' => (int)tep_db_prepare_input($HTTP_POST_VARS['manufacturers_id']));
$update_sql_data = array('products_last_modified' => 'now()');
$sql_data_array = array_merge($sql_data_array, $update_sql_data);
$wpdb->update( TABLE_PRODUCTS, $sql_data_array, array( 'products_id' => $products_id ));
$wpdb->update( TABLE_GLOBAL_PRODUCTS, $updateglobal_products_data, array( 'blog_id' => $blog_id, 'products_id' => $products_id ));
$delete_rps = "DELETE from " . TABLE_RELATED_PRODUCTS . " where products_id = '" . $products_id . "'";
$wpdb->query("DELETE from " . TABLE_RELATED_PRODUCTS . " where products_id = '" . $products_id . "'");
if(mysql_query($delete_rps)) {
foreach($insert_rp_ids1 as $id){
$rps_each2 = array('products_id' => $products_id, 'related_products_ids' => $id);
$wpdb->insert(TABLE_RELATED_PRODUCTS, $rps_each2);
}
}
$wpdb->query("DELETE from " . TABLE_RELATED_PRODUCTS . " where related_products_ids = '" . $products_id . "'");
foreach($insert_rp_ids1 as $rp_ids)
{
$result_rp = mysql_query("SELECT related_products_ids, products_id FROM ".TABLE_RELATED_PRODUCTS." where products_id = '" . $rp_ids ."'");
if(!mysql_num_rows($result_rp))
{
$rps_each2 = array('products_id' => $rp_ids, 'related_products_ids' => $products_id);
$wpdb->insert(TABLE_RELATED_PRODUCTS, $rps_each2);
}
}
有没有办法最小化这些sql查询?或者我的代码可以吗?一般来说,这段代码有点难理解。评论在哪里?看起来您正在执行多个涉及多个表的操作,但具体是什么并不明显 一些想法: 您在$insert\u rp\u ids1上循环了两次-您可以合并这些循环吗?最好有明确的插入、更新和删除章节,并清楚地标注注释 仅当删除成功时才插入。为什么不插入任何一种方式 此外,有些变量名有点不透明。$rps\u each2和$insert\u rp\u ids1到底是什么?像$listOfProductIDsToInsert这样的名称更具描述性,因此在将来更易于维护,特别是当其他人必须处理此代码时 你的缩进有点滑稽。假设这不是复制/粘贴错误,这在使代码可读性方面很重要,因此需要修复 除此之外,您的SQL看起来相当紧凑和高效