<?php
for ($i=0; $i<3; $i++) {
$res = connetDB($i);
print_r('<pre>');
print_r($res);
}
function connetDB($type){
$source_server_name='127.0.0.1';
$source_username='';
$source_password='';
$source_database='test';
$source_conn=@mysql_connect($source_server_name,$source_username,$source_password) or die("error connecting") ; //连接数据库
@mysql_query("set names 'utf8'");
@mysql_select_db($source_database); //打开数据库
$sql = 'SELECT * FROM note ';
$res = @mysql_query($sql, $source_conn);
$data = [];
$ar = [];
$mark = $type == 0 ? 'mysql_fetch_row' : ($type == 1 ? 'mysql_fetch_assoc' : 'mysql_fetch_array');
while ($row = $mark($res)){ //每次只取一行,指针下移一行,最后没有数据返回false
$data[$mark] = $row;
}
return $data;
}
输出:
Array
(
[mysql_fetch_row] => Array
(
[0] => 1
[1] => mysql
[2] => handle result
)
)
Array
(
[mysql_fetch_assoc] => Array
(
[id] => 1
[title] => mysql
[desc] => handle result
)
)
Array
(
[mysql_fetch_array] => Array
(
[0] => 1
[id] => 1
[1] => mysql
[title] => mysql
[2] => handle result
[desc] => handle result
)
)