本文格式為Word版，下載可任意編輯——英文題目的PHP面試題及答案英文題目的PHP面試題及答案

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1.Whichofthefollowingwillnotaddjohntotheusersarray?

1.$users[]=john;

2.array_add$users，john;

3.array_push$users，john;

4.$users||=john;

Answer:2，4

2.Whatsthedifferencebetweensort，asortandksort，rsort?Underwhatcircumstanceswouldyouuseeachofthese?

sort:本函數(shù)對(duì)數(shù)組的值舉行排序。當(dāng)本函數(shù)終止時(shí)數(shù)組單元將被從最低到最高重新安置，array中的單元賦予新的鍵名。這將刪除原有的鍵名而不僅是重新排序。

asort:這個(gè)函數(shù)將數(shù)組的值重新排序，由小至大排列。數(shù)組的索引亦跟著值的依次而變動(dòng)。當(dāng)您在程序中需要重新整理數(shù)組值的`依次時(shí)，就可以使用這個(gè)函數(shù)。

ksort:對(duì)數(shù)組按照鍵名排序，留存鍵名到數(shù)據(jù)的關(guān)聯(lián)。本函數(shù)主要用于關(guān)聯(lián)數(shù)組。

rsort:本函數(shù)對(duì)數(shù)組舉行逆向排序最高到最低。與sort執(zhí)行相反的操作。

3.Whatwouldthefollowingcodeprinttothebrowser?Why?

$num=1;

functionmultiply

$num=$num*1;

multiply;

echo$num;

1

4.Whatisthedifferencebetweenareferenceandaregularvariable?Howdoyoupassbyreferencewhywouldyouwantto?

passbyreferencelikethisfunctions$vars;

itlikesmorefast;

5.Whatfunctionscanyouusetoaddlibrarycodetothecurrentlyrunningscript?

inlcudeorrequire;

6.Whatisthedifferencebetweenfoo@foo?

iffoothrowaerror，willbealert，but@foono;

7.HowdoyoudebugaPHPapplication?

xdebugorusediedoit;

8.Whatdoes===do?Whatsanexampleofsomethingthatwillgivetruefor==，butnot===?

===用于精確對(duì)比ex:'==null=truebut'===null=false;

9.Howwouldyoudeclareaclassnamed"myclass'withnomethodsorproperties?

classmyclass

10.Howwouldyoucreateanobject，whichisaninstanceof"myclass'?

$myoject=newmyclass;

11.Howdoyouaccessandsetpropertiesofaclassfromwithintheclass?

getVarorsetVar;

12.Whatisthedifferencebetweenincludeinclude_once?includerequire?

require:PHP程式在執(zhí)行前，就會(huì)先讀入require所指定引入的檔案，使它變成PHP程式網(wǎng)頁的一部份。常用的函式，亦可以這個(gè)方法將它引入網(wǎng)頁中。錯(cuò)誤產(chǎn)生致命錯(cuò)誤。

include:這個(gè)函式一般是放在流程操縱的處理區(qū)段中。PHP程式網(wǎng)頁在讀到include的檔案時(shí)，才將它讀進(jìn)來。這種方式，可以把程式執(zhí)行時(shí)的流程簡(jiǎn)樸化。錯(cuò)誤產(chǎn)生警報(bào)。

include_once:此行為和include語句類似，唯一識(shí)別是假設(shè)該文件中的代碼已經(jīng)被包含了，那么不會(huì)再次包含。宛如此語句名字示意的那樣，只會(huì)包含一次。

13.Whatfunctionwouldyouusetoredirectthebrowsertoanewpage?

1.redir

2.header

3.location

4.redirect

2

14.Whatfunctioncanyouusetoopenafileforreadingandwriting?

1.fget;

2.file_open;

3.fopen;

4.open_file;

3

15.Whatsthedifferencebetweenmysql_fetch_rowandmysql_fetch_array?

mysql_fetch_row:返回根據(jù)所取得的行生成的數(shù)組，假設(shè)沒有更多行那么返回FALSE。

mysql_fetch_array:是mysq_fetch_row的擴(kuò)展版本。除了將數(shù)據(jù)以數(shù)字索引方式儲(chǔ)存在數(shù)組中之外，還可以將數(shù)據(jù)作為關(guān)聯(lián)索引儲(chǔ)存，用字段名作為鍵名。

16.Whatdoesthefollowingcodedo?Explainwhatsgoingonthere.

$date=8/26/23;

printereg_replace[-9]+/[-9]+/[-9]+，2/1/3，$date;

本函數(shù)以正那么的規(guī)矩來解析比對(duì)字符串，欲取而代之的字符串為2/1/3。

返回值為字符串類型，為取代后的字符串結(jié)果。

17.Givenalineoftext$string，howwouldyouwritearegularexpressiontostripalltheHTMLtagsfromit?

strip_tags

18.WhatsthedifferencebetweenthewayPHPandPerldistinguishbetweenarraysandhashes?

19.HowcanyougetroundthestatelessnatureofHTTPusingPHP?

2.Whatd