从php中的mysql表中选择count(*) [英] select count(*) from table of mysql in php

问题描述

我可以同时获取mysql查询结果的值和行.

I am able to get both the value and row of the mysql query result.

但我正在努力获得查询的单个输出.例如:

But I am struggling to get the single output of a query. e.g.:

$result = mysql_query("SELECT COUNT(*) FROM Students;");

我需要显示结果.但我没有得到结果.

I need the result to display. But I am not getting the result.

我尝试了以下方法:

1. mysql_fetch_assoc()
2. mysql_free_result()
3. mysql_fetch_row()

但我没有成功显示(获取)实际值.

But I didn't succeed to display (get) the actual value.

推荐答案

为了从 mysql_fetch_assoc 调用它，你需要使用 as 关键字为聚合添加别名>

You need to alias the aggregate using the as keyword in order to call it from mysql_fetch_assoc

$result=mysql_query("SELECT count(*) as total from Students");
$data=mysql_fetch_assoc($result);
echo $data['total'];

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