js动态添加行后,往数据库中插入数据的问题
- HTML code
<!-- Code highlighting produced by Actipro CodeHighlighter (freeware) http://www.CodeHighlighter.com/ --><!--html部分--> <script language="JavaScript"> var cGetRow=-99999; function insertrow(){ var newrow = document.all.ACE_HIDDEN_TABLE.rows[0].cloneNode(true); //克隆一行 document.all("newTB").appendChild(newrow); //添加刚才克隆的一行 } function GetRow(){ //获得行索引 //两个parentElement分别是TD和TR,rowIndex是TR的属性 //this.parentElement.parentElement.rowIndex cGetRow=window.event.srcElement.parentElement.parentElement.rowIndex; DelRow(cGetRow);//点击checkbox时,直接删除行。 } function DelRow(iIndex){ //删除一行 if(iIndex==-99999){ alert("系统提示:没有选中行号!"); }else{ newTB.deleteRow(iIndex); iIndex==-99999;//将rowIndex恢复默认值。 } } </script>
php部分
- PHP code
<!-- Code highlighting produced by Actipro CodeHighlighter (freeware) http://www.CodeHighlighter.com/ -->$con = mysql_connect("localhost","root","mysql") or die ("连接数据库失败"); //数据库用户名及数据库密码 //数据库名称 mysql_select_db('BERecord'); //数据库名称 mysql_query('set names utf8'); //只有一行插入时的sql语句 $record=$_POST['record']; //登记 //$no=$_POST['no']; //NO、 $usercode=$_POST['usercode']; //用户号码 $buildname=$_POST['buildname']; //建筑名称 for($i=0;$i"; echo "正在返回输入页面,跳转中..."; echo "<meta http-equiv="refresh" content="2;url=yanshi.php">"; } else { echo "插入数据失败"; echo mysql_error(); } } <div class="clear"> </div>

DependencyInjection(DI)inPHPenhancescodeflexibilityandtestabilitybydecouplingdependencycreationfromusage.ToimplementDIeffectively:1)UseDIcontainersjudiciouslytoavoidover-engineering.2)Avoidconstructoroverloadbylimitingdependenciestothreeorfour.3)Adhe

ToimproveyourPHPwebsite'sperformance,usethesestrategies:1)ImplementopcodecachingwithOPcachetospeedupscriptinterpretation.2)Optimizedatabasequeriesbyselectingonlynecessaryfields.3)UsecachingsystemslikeRedisorMemcachedtoreducedatabaseload.4)Applyasynch

Yes,itispossibletosendmassemailswithPHP.1)UselibrarieslikePHPMailerorSwiftMailerforefficientemailsending.2)Implementdelaysbetweenemailstoavoidspamflags.3)Personalizeemailsusingdynamiccontenttoimproveengagement.4)UsequeuesystemslikeRabbitMQorRedisforb

DependencyInjection(DI)inPHPisadesignpatternthatachievesInversionofControl(IoC)byallowingdependenciestobeinjectedintoclasses,enhancingmodularity,testability,andflexibility.DIdecouplesclassesfromspecificimplementations,makingcodemoremanageableandadapt

The best ways to send emails using PHP include: 1. Use PHP's mail() function to basic sending; 2. Use PHPMailer library to send more complex HTML mail; 3. Use transactional mail services such as SendGrid to improve reliability and analysis capabilities. With these methods, you can ensure that emails not only reach the inbox, but also attract recipients.

Calculating the total number of elements in a PHP multidimensional array can be done using recursive or iterative methods. 1. The recursive method counts by traversing the array and recursively processing nested arrays. 2. The iterative method uses the stack to simulate recursion to avoid depth problems. 3. The array_walk_recursive function can also be implemented, but it requires manual counting.

In PHP, the characteristic of a do-while loop is to ensure that the loop body is executed at least once, and then decide whether to continue the loop based on the conditions. 1) It executes the loop body before conditional checking, suitable for scenarios where operations need to be performed at least once, such as user input verification and menu systems. 2) However, the syntax of the do-while loop can cause confusion among newbies and may add unnecessary performance overhead.

Efficient hashing strings in PHP can use the following methods: 1. Use the md5 function for fast hashing, but is not suitable for password storage. 2. Use the sha256 function to improve security. 3. Use the password_hash function to process passwords to provide the highest security and convenience.


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