为什么无法使用php中mysqli的准备语句进行数据库中数据的查询(绑定参数或者绑定结果),项目急用!
代码如下:
- PHP code
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--><?php /* 利用mysqli扩展来绑定结果*/ //新建服务器连接 $mysqli=new mysqli('localhost','root','root','searcdb'); //创建查询 $query="SELECT adminName,adminPwd FROM admininfo"; //创建语句对象 $stmt=$mysqli->stmt_init(); //为执行准备语句 $stmt->prepare($query); //执行语句 $stmt->execute(); //绑定结果参数 $stmt->bind_result($name,$pwd); //循环处理结果并输出数据 while($stmt->fetch()){ printf("%s, %s, %s <br>",$name,$pwd); } //恢复语句资源 $stmt->close(); //关闭连接 $mysqli->close();?>
------解决方案--------------------
printf("%s, %s, %s
",$name,$pwd); ???
少了一个参数
或者说多了一个格式符
------解决方案--------------------
多一个占位符。你不是只有两个参数吗?
------解决方案--------------------
少了一行代码,要把查询结果临时存储才能使用。
仅供参考:
- PHP code
function selectLink($oid){ $sql = "select o.oid,l.lid,c.cid,comName,comPrice,ordTime from mis_order o,mis_link l,mis_commodity c where o.oid=l.lid and c.cid=l.cid and o.oid=?"; $stmt = $this->mysqli->prepare($sql); $stmt->bind_param("i",$oid); $stmt->execute(); $stmt->store_result(); $stmt->bind_result($oid,$lid,$cid,$comName,$comPrice,$ordTime); $rows = $stmt->affected_rows; if($rows > 0){ $arrLink = array(); while($stmt->fetch()){ $arr = array( "oid" => $oid, "lid" => $lid, "cid" => $cid, "comName" => $comName, "comPrice" => $comPrice, "ordTime" => $ordTime ); array_push($arrLink,$arr); } return $arrLink; }else{ echo "查询订单明细失败!<br>"; } }<div class="clear"> </div>

PHPisusedforsendingemailsduetoitsintegrationwithservermailservicesandexternalSMTPproviders,automatingnotificationsandmarketingcampaigns.1)SetupyourPHPenvironmentwithawebserverandPHP,ensuringthemailfunctionisenabled.2)UseabasicscriptwithPHP'smailfunct

The best way to send emails is to use the PHPMailer library. 1) Using the mail() function is simple but unreliable, which may cause emails to enter spam or cannot be delivered. 2) PHPMailer provides better control and reliability, and supports HTML mail, attachments and SMTP authentication. 3) Make sure SMTP settings are configured correctly and encryption (such as STARTTLS or SSL/TLS) is used to enhance security. 4) For large amounts of emails, consider using a mail queue system to optimize performance.

CustomheadersandadvancedfeaturesinPHPemailenhancefunctionalityandreliability.1)Customheadersaddmetadatafortrackingandcategorization.2)HTMLemailsallowformattingandinteractivity.3)AttachmentscanbesentusinglibrarieslikePHPMailer.4)SMTPauthenticationimpr

Sending mail using PHP and SMTP can be achieved through the PHPMailer library. 1) Install and configure PHPMailer, 2) Set SMTP server details, 3) Define the email content, 4) Send emails and handle errors. Use this method to ensure the reliability and security of emails.

ThebestapproachforsendingemailsinPHPisusingthePHPMailerlibraryduetoitsreliability,featurerichness,andeaseofuse.PHPMailersupportsSMTP,providesdetailederrorhandling,allowssendingHTMLandplaintextemails,supportsattachments,andenhancessecurity.Foroptimalu

The reason for using Dependency Injection (DI) is that it promotes loose coupling, testability, and maintainability of the code. 1) Use constructor to inject dependencies, 2) Avoid using service locators, 3) Use dependency injection containers to manage dependencies, 4) Improve testability through injecting dependencies, 5) Avoid over-injection dependencies, 6) Consider the impact of DI on performance.

PHPperformancetuningiscrucialbecauseitenhancesspeedandefficiency,whicharevitalforwebapplications.1)CachingwithAPCureducesdatabaseloadandimprovesresponsetimes.2)Optimizingdatabasequeriesbyselectingnecessarycolumnsandusingindexingspeedsupdataretrieval.

ThebestpracticesforsendingemailssecurelyinPHPinclude:1)UsingsecureconfigurationswithSMTPandSTARTTLSencryption,2)Validatingandsanitizinginputstopreventinjectionattacks,3)EncryptingsensitivedatawithinemailsusingOpenSSL,4)Properlyhandlingemailheaderstoa


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Atom editor mac version download
The most popular open source editor

SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

SublimeText3 Chinese version
Chinese version, very easy to use

SublimeText3 Linux new version
SublimeText3 Linux latest version
