


- $begin_day = date("Y-m-d 00:00:00");
- $end_day = date("Y-m-d 23:59:59");
- $last_begin = date("Y-m-d 00:00:00",strtotime("last days"));
- $last_end = date("Y-m-d 23:59:59",strtotime("last days"));
- $next_begin = date("Y-m-d 00:00:00",strtotime("next days"));
- $next_end = date("Y-m-d 23:59:59",strtotime("next days"));
- $month_times = strtotime(date("Y-m"));
- $monthday = date("t");
- $month = date("n");
- $begin_this_week=date("Y-m-d 00:00:00",strtotime("last Sunday +1 day"));
- $end_this_week=date("Y-m-d 23:59:59",strtotime("next Sunday"));
- $begin_this_month=date('Y-m-01 00:00:00');
- $end_this_month=date("Y-m-$monthday 23:59:59",strtotime("this month",$month_times));
- if($month==1 || $month==2 ||$month==3){
- $begin_this_quarter=date('Y-01-01 00:00:00');
- $end_this_quarter=date("Y-03-31 23:59:59");
- }elseif($month==4 || $month==5 ||$month==6){
- $begin_this_quarter=date('Y-04-01 00:00:00');
- $end_this_quarter=date("Y-06-30 23:59:59");
- }elseif($month==7 || $month==8 ||$month==9){
- $begin_this_quarter=date('Y-07-01 00:00:00');
- $end_this_quarter=date("Y-09-30 23:59:59");
- }else{
- $begin_this_quarter=date('Y-10-01 00:00:00');
- $end_this_quarter=date("Y-12-31 23:59:59");
- }
- $begin_this_year=date('Y-01-01 00:00:00');
- $end_this_year=date('Y-12-31 23:59:59');
- //一季度是1月1日到3月31日;二季度是4月1日到6月30;三季度是7月1到9月30;四季度是10月1到12月31
- echo "当天 | ";
- echo "前天 | ";
- echo "明天 | ";
- echo "本周 | ";
- echo "本月 | ";
- echo "本季度 | ";
- echo "本年 ";
以上就介绍了php 获取日期(当天,前天,明天,本周,本月,本季度,本年),包括了方面的内容,希望对PHP教程有兴趣的朋友有所帮助。

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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