PHP中require和require_once的区别是什么

require与request有什么区别？

区别：

1）request 表示“有礼貌的请求；正式的请求”，是下对上的要求；I request him to help.我请求他帮忙。The teacher requested that each of us(should)go there at once.老师要求我们每一个人要马上到那儿去。

2）require表示order, demand， 是“命令，要求”之意，指上对下的要求。Mr.Green required his students to keep silent.格林先生要求他的学生保持安静。I require warm clothing for the winter.我需要保暖的服装过冬。

区别是词性和用法，require v.需要；要求，规定；request v.要求，请求.n.要求，请求.

They made a request for further aid.

These pets require a lot of care and attention.

require的虚拟语气？

require意为“需要,要求",后接从句要用虚拟语气,即其后的从句:谓语动词用should+动词原形,should可以省略.

He required that the task (should) be finished today.

他要求今天完成任务。

在表示提议、要求、命令、意愿、决定等意义的动词(如suggest, decide, require, request, demand, propose, insist, order, prefer等)后的宾语从句中，常用 "should+动词原形"，should常被省略。

　　Almost all his friends suggested that he visit Mr. Johnson at once.

　　几乎他所有的朋友都建议他去拜访约翰逊先生。

　　I insist that a doctor be sent for immediately.

　　我坚持立即请医生。

意思是“需要,要求"时,后接宾语从句要用虚拟语气,即其后的宾语从句谓语动词用should+动词原形,should可以省略.

He required that the task (should) be finished today.

require虚拟语气为should+动词原型

例句

1.

The job will require you to use all your skills to the maximum.

这项工作将要求你最大限度地发挥你的技能。

2.

Add more curry powder depending on the strength required.

按所要求的口味轻重再加点咖喱粉。

3.

Students are required to be in school by 8.30.

到此，以上就是小编对于php require include 区别的问题就介绍到这了，希望这2点解答对大家有用。