mysqli在php7中的使用

mysqli這個庫還是比較繁雜的，這其中又分mysqli ，mysqli_stmt,mysqli_result......一堆類，特別亂

這里奉上thinkphp5.1中使用mysqli擴展的查詢用法，以饗諸君

$mysqli = new \mysqli("127.0.0.1","root","1234567","testdb");
$sql = "select * from user_auth_v where userid = ?";
$stmt = $mysqli->prepare($sql);
$stmt->bind_param('s',$userid);
$stmt->execute();
$ret=$stmt->get_result();
var_dump($ret); //返回結果：object(mysqli_result)#92 (5) { ["current_field"]=> int(0) ["field_count"]=> int(14) ["lengths"]=> NULL ["num_rows"]=> int(7) ["type"]=> int(0) } 
echo "結果集長度:".$ret->num_rows;//結果集長度:7

for ($i=1;$i<=$ret->num_rows;$i++)
{
    echo "<br>";
    var_dump(mysqli_fetch_assoc($ret));
}

由於mysqli不是thinkphp5.1的內置類型，所以引用時要添加斜線：

$mysqli = new \mysqli("127.0.0.1","root","1234567","testdb");

$ret循環返回結果形如: 

array(14) { ["userid"]=> string(2) "cj" ["username"]=> string(6) "程勁" ["ugid"]=> int(3) ["roleid"]=> int(2) ["usergroupid"]=> int(6) ["description"]=> string(24) "查詢商品入庫信息" ["fullpath"]=> string(28) "logistic/Logistic/generalqry" ["authid"]=> int(4) ["ismenu"]=> int(0) ["link"]=> string(26) "generalqry/:tblname/:param" ["menulevel"]=> int(0) ["role"]=> int(2) ["saiwa"]=> int(2) ["authno"]=> int(201) }
array(14) { ["userid"]=> string(2) "cj" ["username"]=> string(6) "程勁" ["ugid"]=> int(3) ["roleid"]=> int(2) ["usergroupid"]=> int(6) ["description"]=> string(21) "查詢入庫單明細" ["fullpath"]=> string(25) "logistic/Logistic/qryrkmx" ["authid"]=> int(5) ["ismenu"]=> int(0) ["link"]=> string(14) "qryrkmx/:param" ["menulevel"]=> int(0) ["role"]=> int(2) ["saiwa"]=> int(2) ["authno"]=> int(20200) } 
array(14) { ["userid"]=> string(2) "cj" ["username"]=> string(6) "程勁" ["ugid"]=> int(3) ["roleid"]=> int(2) ["usergroupid"]=> int(6) ["description"]=> string(27) "添加入庫單單頭信息" ["fullpath"]=> string(26) "logistic/Logistic/addrkdoc" ["authid"]=> int(6) ["ismenu"]=> int(0) ["link"]=> string(7) "/rk/add" ["menulevel"]=> int(0) ["role"]=> int(2) ["saiwa"]=> int(2) ["authno"]=> int(20102) } 
array(14) { ["userid"]=> string(2) "cj" ["username"]=> string(6) "程勁" ["ugid"]=> int(3) ["roleid"]=> int(2) ["usergroupid"]=> int(6) ["description"]=> string(27) "更新入庫單單頭信息" ["fullpath"]=> string(26) "logistic/Logistic/updrkdoc" ["authid"]=> int(7) ["ismenu"]=> int(0) ["link"]=> string(10) "/rk/update" ["menulevel"]=> int(0) ["role"]=> int(2) ["saiwa"]=> int(2) ["authno"]=> int(20103) } 
array(14) { ["userid"]=> string(2) "cj" ["username"]=> string(6) "程勁" ["ugid"]=> int(3) ["roleid"]=> int(2) ["usergroupid"]=> int(6) ["description"]=> string(18) "新增入庫明細" ["fullpath"]=> string(25) "logistic/Logistic/addrkmx" ["authid"]=> int(8) ["ismenu"]=> int(0) ["link"]=> string(9) "/rkmx/add" ["menulevel"]=> int(0) ["role"]=> int(2) ["saiwa"]=> int(2) ["authno"]=> int(20201) } 
array(14) { ["userid"]=> string(2) "cj" ["username"]=> string(6) "程勁" ["ugid"]=> int(3) ["roleid"]=> int(2) ["usergroupid"]=> int(6) ["description"]=> string(18) "更新入庫明細" ["fullpath"]=> string(28) "logistic/Logistic/updaterkmx" ["authid"]=> int(9) ["ismenu"]=> int(0) ["link"]=> string(16) "/rkmx/update/:id" ["menulevel"]=> int(0) ["role"]=> int(2) ["saiwa"]=> int(2) ["authno"]=> int(20202) } 
array(14) { ["userid"]=> string(2) "cj" ["username"]=> string(6) "程勁" ["ugid"]=> int(3) ["roleid"]=> int(2) ["usergroupid"]=> int(6) ["description"]=> string(18) "商品新增入庫" ["fullpath"]=> string(28) "logistic/Logistic/loadlrkdoc" ["authid"]=> int(11) ["ismenu"]=> int(1) ["link"]=> string(10) "loadlrkdoc" ["menulevel"]=> int(0) ["role"]=> int(2) ["saiwa"]=> int(2) ["authno"]=> int(2) }

 

或者是： $conn = new \mysqli('127.0.0.1','root','1234567','testdb'); $sql = "select authid from user_auth_v where userid = ?"; $stmt = mysqli_stmt_init($conn); $sentence = mysqli_stmt_prepare($stmt,$sql); $stmt->bind_param('s',$userid); $stmt->execute(); $ret = $stmt->get_result(); echo "結果集長度:".$ret->num_rows; for ($i=1;$i<=$ret->num_rows;$i++) { echo "<br>"; var_dump(mysqli_fetch_assoc($ret)); }  

•  全mysqli_stmt模式

$conn = new mysqli('127.0.0.1','root','1234567','testdb'); $stmt = mysqli_stmt_init($conn); $sql = "select * from user_auth_v where link = ? and userid = ?"; $bindret = mysqli_stmt_prepare($stmt,$sql); $link = 'gd/list'; $userid = 'cpc'; if ($bindret) { mysqli_stmt_bind_param($stmt,'ss',$link,$userid); mysqli_stmt_execute($stmt); $rows = mysqli_stmt_get_result($stmt); var_dump($rows->num_rows); }
這里只返回結果（數組的長度）

•  以下返回關聯數組

$conn = new mysqli('127.0.0.1','root','1234567','testdb'); $stmt = mysqli_stmt_init($conn); $sql = "select * from user_auth_v where  userid = ?"; $bindret = mysqli_stmt_prepare($stmt,$sql); //$link = 'gd/list';
$userid = 'cpc'; if ($bindret) { mysqli_stmt_bind_param($stmt,'s',$userid); mysqli_stmt_execute($stmt); $rows = mysqli_stmt_get_result($stmt); var_dump($rows->num_rows); while ($row=$rows->fetch_array(MYSQLI_ASSOC)) { var_dump($row); echo "<br>"; } }