PHP将数据库内容转化为csv文件

<?php
include &ldquo;init.php&rdquo;;
$file_name_=&rsquo;file.csv&rsquo;;

$str_content_=&rdquo;aid,username,password,role,status,created_time,updated_time\n&rdquo;;
file_put_contents($file_name_,$str_content_);

$query = &ldquo;select * from administrator&rdquo;;
$list = MysqliClient::ExecuteQuery(&lsquo;intern&rsquo;, $query);

foreach($list as $row){
foreach($row as $col){
$str_content_=$col.&rdquo;,&rdquo;;
file_put_contents($file_name_,$str_content_,FILE_APPEND);
}
file_put_contents($file_name_,&rdquo;\n&rdquo;,FILE_APPEND);
}