php sql sum

Calculate the sum of order quantities $query_num"SELECT SUM(order_num) from hcf_order_db where order_id = XXX";$arr_qn = mysqli_query($dbc,$query_num);list($sum)=mysqli_fetch_row($arr_qn); Calculate the sum of the order Amount $query_amount"SELECT

: This article mainly introduces the SQL statement for the same table. PHP queries the sum of two columns of data and then outputs the results. if you are interested in the PHP Tutorial, you can refer to it. // Calculate the total order

PHP, which has just made a historic breakthrough in the programming language ranking in September, is probably the most powerful opponent in the Web development field, namely ASP. NET based on Microsoft. NET technology. Recently, Microsoft's

Regular expressions for common SQL attacks in php are summarized and SQL regular expressions are used. Regular expressions of common SQL attacks in php are summarized. This article describes the regular expressions of common SQL attacks in php.

PHP + SQL injection technology implementation and prevention measures. Summarize the experience. In my opinion, the main cause of the SQL injection attack is the following two reasons: 1. the magic_quotes_gpc option in the php. ini configuration

Introduction: This is Php, Asp.net web development B/SProgramming LanguageFunction | parameter | detailed page of the user manual, which describes PHP, PHP, Asp.net, web development, and functions | parameters, user manual PHP, asp.net web

In order for you to better learn PHP, I mainly want to talk about the PHP Learning line this time so that you can better learn PHP. this time I mainly want to talk about the PHP Learning line, sort out the technical requirements of PHP programmers

Purpose: To filter the sum of two fields in a table as a where conditionQuerying for records with no expirationSelect a, from Test where a+b>now ();//A: Deposit time B: Validity period SQL will error when you make the above query.However, simply

This tutorial does not want you to fully understand the language, only to enable you to join the development of dynamic Web sites as soon as possible. I assume you have some basic knowledge of HTML (or HTML editors) and some programming ideas. Brief

Summary of regular expressions of SQL attacks common in PHP, SQL regular expressions The examples in this article describe common SQL attack regular expressions in PHP. Share to everyone for your reference. The specific analysis is as follows: As