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php method to return query results: 1. Use the mysql_result function to obtain data; 2. Use the mysql_fetch_row function to obtain data and return the query results in the form of an array; 3. Use the mysql_fetch_array function to obtain data, etc. .
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Analysis of four types of query return results in PHP development
1.f86f76643ee9dec682387804d5c33a2c
The code is as follows:
<?php $connection=mysql_connect("localhost","root","password"); //连接并选择数据库服务器 mysql_select_db("test",$connection); $query="insert into users(user_name)"; //在test数据库里插入一条数据 $query.="values('tuxiaohui')"; $result=mysql_query($query); if(!$query) echo "insert data failed!<br>"; else{ $query="select * from users"; //查询数据 $result=mysql_query($query,$connection); for($rows_count=0;$rows_count<7;$rows_count++) //用mysql_result获得数据并输出,mysql_result() 返回 MySQL 结果集中一个单元的内容。 { echo "用户ID:".mysql_result($result,$rows_count,"user_id")."<br>"; echo "用户名:".mysql_result($result,$rows_count,"user_name")."<br>"; } } ?>
2.893fdb92948e62ebdc792d3cfafdfe70
The code is as follows:
<?php $connection=mysql_connect("localhost","root","password"); //连接并选择数据库服务器 mysql_select_db("test",$connection); $query="select * from users"; $result=mysql_query($query,$connection); while($row=mysql_fetch_row($result)) { echo "用户ID:".$row[0]."<br>"; echo "用户名:".$row[1]."<br>"; } ?>
3.48d59c25e6dec69c8e6408d79c940a9d
The code is as follows:
<?php $connection=mysql_connect("localhost","root","password"); //连接并选择数据库服务器 mysql_select_db("test",$connection); $query="select * from users"; $result=mysql_query($query,$connection); while($row=mysql_fetch_array($result)) { echo "用户ID:".$row[0]."<br>"; //也可以写做$row["user_id"] echo "用户名:".$row[1]."<br>"; //也可以写做$row["user_name"] } ?>
4.