1)以写模式打开文件:
$myFile = "testFile.txt";
$fo = fopen($myFile, 'w') or die("can't open file");
Run Code Online (Sandbox Code Playgroud)
2)编写mysql查询并获取其数据
$data_query=mysql_query("SELECT name,age from table");
while($data=mysql_fetch_array($data_query))
$stringData.="Name: ".$data['name']." Age:".$data['age']."\n";
Run Code Online (Sandbox Code Playgroud)
3) 将数据写入文件
fwrite($fo, $stringData);
Run Code Online (Sandbox Code Playgroud)
4) 关闭文件
fclose($fo);
Run Code Online (Sandbox Code Playgroud)