


PHP left category list displays menu, PHP left category list_PHP tutorial
php左侧分类列表显示菜单,php左侧分类列表
<!DOCTYPE> <html> <head> <meta http-equiv="content-type" content="text/html" charset="utf-8"> <title>商品分类导般菜单</title> <style><span> body {font</span>-family:\5B8B\4F53,Arial Narrow,arial,serif;background:<span>#</span><span>ffffff;font-size:12px; color:#313131;}</span> body,div,<span>dl</span>,dt,dd,ul,ol,li,pre,form,fieldset,input,textarea,blockquote{padding:0; margin:0<span>;} li{</span><span>list</span>-style-type:<span>none;} </span>.wrap {width: 960px; margin:0<span> auto;} </span>.wrap .leftzone {<span>float</span>: left;width: 200px;margin:10px 0<span>;} </span>.modTop .sidetitle{height:28px;background:<span>#</span><span>ccc; font-weight:bold;}</span> .modTop em{<span>float</span>:left;padding:6px 0 0 11px;font-style:normal;color:<span>#</span><span>000;}</span> .sidecontent{border-left:<span>#</span><span>CCC 1px solid;border-right:#CCC 1px solid;border-bottom:#CCC 1px solid;padding:6px;}</span> .my_left_category{width:<span>180px;} </span>.my_left_category h1{height:20px;font-size:14px;font-weight:bold;padding-left:15px;padding-top:8px;margin:0px;color:<span>#</span><span>FFF;}</span> .my_left_category .my_left_cat_list{width:178px;line-height:13.<span>5pt;} </span>.my_left_category .my_left_cat_list h2 {margin:0px;padding:<span>3px 5px 0px 9px;} </span>.my_left_category .my_left_cat_list h2 a {color:<span>#</span><span>d6290b;font-weight:bold;font-size:14px;line-height:22px;}</span> .my_left_category .my_left_cat_list h2 a:hover {color:<span>#</span><span>d6290b;font-weight:bold;font-size:14px;line-height:22px;}</span> .my_left_category .h2_cat{width:178px;height:26px;background-image:url('./images/my_menubg.gif');background-repeat:no-repeat;line-height:26px;font-weight:normal;color:<span>#</span><span>333333;position:relative;}</span> .my_left_category .h2_cat_1{width:178px;height:26px;line-height:26px;font-weight:normal;color:<span>#</span><span>333333;position:relative;}</span> .my_left_category a{font-size:12px;text-decoration:none;color:<span>#</span><span>333333;}</span> .my_left_category a:hover{text-decoration:underline;color:<span>#</span><span>ff3333;}</span> .my_left_category h3{margin:0px;padding:0px;height:26px;font-size:12px;font-weight:normal;display:block;padding-left:<span>8px;} </span>.my_left_category h3 span{color:<span>#</span><span>999999; width:145px; float:right;}</span> .my_left_category h3 a{ line-height:<span>26px;} </span>.my_left_category .h3_cat{display:none;width:204px;position:absolute;left:153px;margin-top:-26px;cursor:<span>auto;} </span>.my_left_category .shadow{position:inherit;width:<span>204px;} </span>.my_left_category .shadow_border{position:inherit;width:200px;border:1px solid <span>#</span><span>959595; margin-top:1px;border-left-width:0px;background:url('./images/shadow_border.gif') no-repeat 0px 21px;background-color:#ffffff;margin-bottom:3px}</span> .my_left_category .shadow_border ul{margin:0; padding:0; margin-left:<span>15px} </span>.my_left_category .shadow_border ul li {<span>list</span>-style:none;padding-left:10px;background-image:url('./images/my_cat_sub_menu_dot.gif');background-repeat:no-repeat;background-position:0px 8px;<span>float</span>:left;width:75px;height:26px;overflow:hidden;letter-spacing:<span>0px;} </span>.my_left_category .active_cat{ z-index:99;background-position:0 -25px;cursor:<span>pointer;} </span>.my_left_category .active_cat h3 { font-weight:<span>bold} </span>.my_left_category .active_cat h3 span{ display:<span>none;} </span>.my_left_category .active_cat div{display:<span>block;} </span></style> </head> <body> <div <span>class</span>="wrap"> <div <span>class</span>="leftzone"> <div <span>class</span>="modTop"><div <span>class</span>="sidetitle"><em>商品分类</em></div></div> <div <span>class</span>="sidecontent"> <div <span>class</span>="my_left_category"> <div <span>class</span>="my_left_cat_list"> <div <span>class</span>="h2_cat" onmouseover="this.className='h2_cat active_cat'" onmouseout="this.className='h2_cat'"> <h3 id="a-href-AA-a"><a href="#">AA</a></h3> <div <span>class</span>="h3_cat"> <div <span>class</span>="shadow"> <div <span>class</span>="shadow_border"> <ul> <li><a href="#">a.1</a></li> <li><a href="#">a.2</a></li> <li><a href="#">a.3</a></li> <li><a href="#">a.4</a></li> </ul> </div> </div> </div> </div> </div> </div> </div> </div> </div> </body> </html>

ThesecrettokeepingaPHP-poweredwebsiterunningsmoothlyunderheavyloadinvolvesseveralkeystrategies:1)ImplementopcodecachingwithOPcachetoreducescriptexecutiontime,2)UsedatabasequerycachingwithRedistolessendatabaseload,3)LeverageCDNslikeCloudflareforservin

You should care about DependencyInjection(DI) because it makes your code clearer and easier to maintain. 1) DI makes it more modular by decoupling classes, 2) improves the convenience of testing and code flexibility, 3) Use DI containers to manage complex dependencies, but pay attention to performance impact and circular dependencies, 4) The best practice is to rely on abstract interfaces to achieve loose coupling.

Yes,optimizingaPHPapplicationispossibleandessential.1)ImplementcachingusingAPCutoreducedatabaseload.2)Optimizedatabaseswithindexing,efficientqueries,andconnectionpooling.3)Enhancecodewithbuilt-infunctions,avoidingglobalvariables,andusingopcodecaching

ThekeystrategiestosignificantlyboostPHPapplicationperformanceare:1)UseopcodecachinglikeOPcachetoreduceexecutiontime,2)Optimizedatabaseinteractionswithpreparedstatementsandproperindexing,3)ConfigurewebserverslikeNginxwithPHP-FPMforbetterperformance,4)

APHPDependencyInjectionContainerisatoolthatmanagesclassdependencies,enhancingcodemodularity,testability,andmaintainability.Itactsasacentralhubforcreatingandinjectingdependencies,thusreducingtightcouplingandeasingunittesting.

Select DependencyInjection (DI) for large applications, ServiceLocator is suitable for small projects or prototypes. 1) DI improves the testability and modularity of the code through constructor injection. 2) ServiceLocator obtains services through center registration, which is convenient but may lead to an increase in code coupling.

PHPapplicationscanbeoptimizedforspeedandefficiencyby:1)enablingopcacheinphp.ini,2)usingpreparedstatementswithPDOfordatabasequeries,3)replacingloopswitharray_filterandarray_mapfordataprocessing,4)configuringNginxasareverseproxy,5)implementingcachingwi

PHPemailvalidationinvolvesthreesteps:1)Formatvalidationusingregularexpressionstochecktheemailformat;2)DNSvalidationtoensurethedomainhasavalidMXrecord;3)SMTPvalidation,themostthoroughmethod,whichchecksifthemailboxexistsbyconnectingtotheSMTPserver.Impl


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