Introduction to PHP

Step 1Client Internet Web Server HTML Step 2Web Server Client

Step 1Client Internet Web Server PHP Step 2Web Server PHPStep 3Database /Step 4Web ServerStep 5Web ServerClient

PHP?PHPPersonal Home PagePHP3Hypertext Preprocessor PHPHTMLHTML C/C++Java

PHP?*.html Web Server *. phpPHPPHP HTML PHP*.phpServerphp.exe

HTML

HTML

PHPPHP

.php

Example

PHP/**///PHPHTML;

PHPPHP(integer) (float) (boolean) (string) $

PHP

PHPPHPPHP

PHP

PHP

PHP578.5html

PHPif(1) { 1; } elseif(2) { 2; }else {; }

PHPelse

PHPwhile() { ;;}

0123456789PHP

PHPfor(; ; ) {;;}

0123456789PHP

PHPswitch() {case 1: 1;break;case 2: 2; break;default: ;break;}

PHP0

, Ex: GoogleHTML(Form)Web server,

(Form), (Text), (Password), (Radio), (Check Box), :(Text Area)web server

(Form)GETPOSTGET255 ?1=&2=http;//localhost/get.php?a=1&b=2POSTphp

GETPOSTserver, php

KompoZer

phpGETPOST, GET

Form FieldText Area, :Submit Button

TextTextname, server, name=John (John)

Check Box, servercheck=on

Radio ButtonRadio Button, Group, GroupGroup Name, sex=boy

Text AreaText AreaText AreTextAreaHello World, serverMessage=Hello+World

Submit Button

Submit ButtonField Valuebutton

http://pads8.cs.nthu.edu.tw:8000/get.php?key=John&check=on&sex=boy&Message=Hello+World&submit=submit

PHPGETGETPHP$_GEThttp;//localhost/get.php?a=1&b=2$_GET[a]; $_GET[b];

http://pads8.cs.nthu.edu.tw:8000/get.php?key=John&check=on&sex=boy&Message=Hello+World&submit=submit

GETPHPPHPStringfunction

, 400, ; 400, 50

ReferencePHP5http://www.php5.idv.tw/html.php?mod=article&act=index&cid=3CGIhttp://ind.ntou.edu.tw/~dada/cgi/CGIprog.htmPHP, Little Chen, http://www.csie.nfu.edu.tw/phpBB2/download.php?id=1732&sid=2831850096e414beadd50967981c2536PHPhttp://km.tceb.edu.tw/~wsx/php/index.htm

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