本文實(shí)例講述了php+mysqli批量查詢多張表數(shù)據(jù)的方法。分享給大家供大家參考。具體實(shí)現(xiàn)方法如下：
注意這里使用到了兩個(gè)新的函數(shù)multi_query與store_result，具體代碼如下：
復(fù)制代碼 代碼如下:
<?php
//1、創(chuàng)建數(shù)據(jù)庫連接對(duì)象
$mysqli = new MySQLi("localhost","root","123456","liuyan");
if($mysqli->connect_error){
die($mysqli->connect_error);
}
$mysqli->query("set names 'GBK'");
//2、查詢多個(gè)數(shù)據(jù)庫表
$sqls = "select * from news limit 10,4;";
$sqls .= "select * from user;";
//3、執(zhí)行并處理結(jié)果
if($res = $mysqli->multi_query($sqls)){
//注意：與$mysqli->query()不同，這里返回的是布爾值
do{
$result = $mysqli->store_result();//這里才真正返回結(jié)果集的資源對(duì)象，失敗則返回false;
while($row = $result->fetch_assoc()){
foreach($row as $key=>$value){
echo "--$value--";
}
echo "<hr>";
}
$result->free();
if($mysqli->more_results()){//判斷是否還存在有結(jié)果集
echo "----------查詢下一張表的數(shù)據(jù)---------------<br>";
}
}while($mysqli->next_result());//next_result() 返回 true 或false;
}
//4、關(guān)閉數(shù)據(jù)庫連接
$mysqli->close();
?>
//1、創(chuàng)建數(shù)據(jù)庫連接對(duì)象
$mysqli = new MySQLi("localhost","root","123456","liuyan");
if($mysqli->connect_error){
die($mysqli->connect_error);
}
$mysqli->query("set names 'GBK'");
//2、查詢多個(gè)數(shù)據(jù)庫表
$sqls = "select * from news limit 10,4;";
$sqls .= "select * from user;";
//3、執(zhí)行并處理結(jié)果
if($res = $mysqli->multi_query($sqls)){
//注意：與$mysqli->query()不同，這里返回的是布爾值
do{
$result = $mysqli->store_result();//這里才真正返回結(jié)果集的資源對(duì)象，失敗則返回false;
while($row = $result->fetch_assoc()){
foreach($row as $key=>$value){
echo "--$value--";
}
echo "<hr>";
}
$result->free();
if($mysqli->more_results()){//判斷是否還存在有結(jié)果集
echo "----------查詢下一張表的數(shù)據(jù)---------------<br>";
}
}while($mysqli->next_result());//next_result() 返回 true 或false;
}
//4、關(guān)閉數(shù)據(jù)庫連接
$mysqli->close();
?>
希望本文所述對(duì)大家的php程序設(shè)計(jì)有所幫助。
