54 5 PHP Web hellow.php 1:<?php 2: echo "Hellow, PHP!Y=n"; 3:?> echo PHP C 2: printf("hellow, PHP!Y=n"); PHP (php) $ php hellow.php Hellow, PHP! 5.1.2

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1 53 5 PHP Web Web 1 Web OS (Web) HTML Web Web Web 5.1 PHP Web PHP ( ) hellow.php ( ) Hellow, PHP! PHP hellow.php PHP HTML PHP <?php...?>

2 54 5 PHP Web hellow.php 1:<?php 2: echo "Hellow, PHP!Y=n"; 3:?> echo PHP C 2: printf("hellow, PHP!Y=n"); PHP (php) $ php hellow.php Hellow, PHP! quadratic eq.php 2 Complex! PHP quadratic eq.php 1: <?php 2: echo "a * xˆ2 + b * x + c = 0Y=n"; 3: 4: echo "a = "; $a = trim(fgets(stdin)); 5: echo "b = "; $b = trim(fgets(stdin)); 6: echo "c = "; $c = trim(fgets(stdin)); 7: 8: printf("%f * xˆ2 + %f * x + %f = 0Y=n", $a, $b, $c); 9: 10: $d = $b * $b * $a * $c; 11: 12: if($d >= 0.0) 13: { 14: echo "Real solutions:y=n"; 15: printf("x1 = %fy=n", (-$b + sqrt($d)) / (2.0 * $a)); 16: printf("x2 = %fy=n", (-$b - sqrt($d)) / (2.0 * $a)); 17: } 18: else 19: { 20: echo "Complex!Y=n"; 21: } 22:?>

3 5.1 PHP 55 pp.38 C (quadratic eq.c) PHP (CUI) PHP (php ) $ php quadratic_eq.php quadratic_eq.php a * xˆ2 + b * x + c = 0 a = 1 1 b = 2 2 c = * xˆ * x = 0 Complex C ( if $a = 3; $b = 4; print $a + $b =. ($a + $b). "Y=n"; $a, $b PHP $ $ [0], [1],... [ 1], [ 2],... (hash) ( ) ( ) PHP print $a + $b =. ($a + $b). "Y=n"; $a = 3, $b = 4 $a + $b = 7 print "$a + $b = ". ($a + $b). "Y=n";

4 56 5 PHP Web = 7 ( ) ( ) (.) 1. 2 A C (pp.39) PHP 1. 2 a 2x x + 18 = 0 (x 1 = x 2 = 3) b 32x x = 0 (x 1 = 23565, x 2 = 685) 2. quadratic eq.php 3*. a = 0 1 bx + c = 0 4*. a, b, c is numeric 5.2 Web 1 Web HTML HTML

5 5.2 Web Web Web pp Web ac.jp/ tkouya/index.html 5.1 Web!!$"&# *+,-.*/0*12,345 *63789/:+1-8* 9AB.CD+1-8EFGH (#$"% ') 5.1 Web 1 Web GET ( index.html) 2 index.html 3 index.html CSS (Flash ) 1 URL http: HTTP(HyperText Transport Protocol) Web FQDN(Fully Quolified Domain Name) IP DNS (Domain Name Service) Web TCP 80

6 58 5 PHP Web,*&,*+/ :; <34= "" #! # &$(%') VYZ([W\] ^_`aibc ABC\]^_`aIbc 5.2 URL(URI) GET / tkouya/index.html GET ( ) URL( ) HTML CSS HTML(HyperText Markup Language) ( ) Web (tag) < > </ > HTML <!DOCTYPE html> <html> <head> <meta charset="utf-8" /> Web "UTF-8" <link rel=stylesheet" href="hogehoge.css" type="text/css" /> <title>web </title> </head> <body> Web </body> </html>

7 5.3 HTML PHP 59 html head body head HTML ) body Web HTML HTML CSS( hogehoge.css ) 5.3 HTML PHP Web ( public_html public_html Others $ pwd /home/tkouya/public_html $ ls -ld./ drwxr-xr-x 9 tkouya tkouya :36./ $ ls -ld../ drwxr-xr-x 31 tkouya tkouya :09../ (2.3.3, P.18) public_html index.html <!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title> </title> </head> <body> <h1> </h1> <p> : (Fri)</p> <hr> <ol> <li><a href="keisan.php">keisan.php</a></li> <li>2 </li> </ol> <hr>

8 60 5 PHP Web <address>copyright (c) Tomonori kouya</address> </body> </html> (Internet Explorer, Firefox, Chrome ) Web HTML URL / /index.html / / *1 Web (index.html) Web <ol> </ol> <li> </li> 5.3 index.html Web PHP <?php phpinfo(); *1 Web URL Web

5.4 HTML PHP 61?> 3 PHP (phpinfo.php) index.html http://web / /phpinfo.php 5.

9 5.4 HTML PHP 61?> 3 PHP (phpinfo.php) index.html / /phpinfo.php 5.4 PHP PHP Web 5.4 phpinfo.php 5.4 HTML PHP HTML (form) ( Web ) GET (URL ) POST

10 62 5 PHP Web (URL ) <form action=" " method="get POST "> <input type="text" name="a" /> <input type="text" name="b" /> <input type="text" name="c" /> <input type="submit" /> </form> 5.5 Submit Web ( Apache ) action CGI QUERY STRING (PHP $ENV[ QUERY_STRING ] ) CGI a, b, c (name ) 32, 32, 23 a=32&b=32&c=23 = & & a=32, b=32, c=23 = 32, 32, 23 PHP Web (Apache) PHP PHP

11 5.4 HTML PHP 63 GET $_GET[ name ] POST $_POST[ name ] C Perl Web Web quadratic eq.html 2 Web a, b, c quadratic eq.html (body ) <h1>2 </h1> <form action="quadratic_eq_solve.php" method="get"> <input type="text" name="a" /> * xˆ2 + <input type="text" name="b" /> * x + <input type="text" name="c" /> = 0 <br /> <input type="submit" value="2 " /> <input type="reset" value=" " /> </form> Web ( 5.6 ) action PHP Web PHP HTML <!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>solutions of Quadratic Equation</title> </head> <body> <h1>2 </h1> <?php PHP?>

12 64 5 PHP Web <p><a href="quadratic_eq.html"> </a></p> </body> </html> HTML PHP <?php?> PHP.php HTML PHP quadratic eq.html action PHP quadratic eq solve.php HTML PHP quadratic eq.php quadratic eq solve.php 4: echo "a = "; $a = trim(fgets(stdin)); 5: echo "b = "; $b = trim(fgets(stdin)); 6: echo "c = "; $c = trim(fgets(stdin)); input 10: $a = $_GET[ a ]; 11: $b = $_GET[ b ]; 12: $c = $_GET[ c ]; qudratic eq.html 5.6 O.K. HTML, PHP B A +PHP

13 5.5 PHP HTML PHP HTML HTML + PHP 2 PHP (quadratic eq sigle.php) <h1>2 ( + PHP)</h1> <form method="get"> </form> <?php // if(isset($_get[ a ]) && isset($_get[ b ]) && isset($_get[ c ])) { 2 PHP }?> <p><a href="index.html"> </a></p> action ( quadratic eq single.php) submit

14 66 5 PHP Web isset C quadratic eq single.php 5.6 PHP vs. C C PHP 1: <?php 2: // check dimension 3: if($argc <= 1) 4: { 5: echo "Usage: ". $argv[0]. " [dimension] Y=n"; 6: return; 7: } 8: 9: // input dimension 10: $dim = $argv[1]; 11: printf("dimension = %dy=n", $dim); 12: 13: // initialize 14: $mat_a = array($dim, $dim); 15: $vec_b = array($dim); 16: $vec_c = array($dim); 17: 18: // mat_a[i][j] = i + j : for($i = 0; $i < $dim; $i++) 20: { 21: for($j = 0; $j < $dim; $j++) 22: $mat_a[$i][$j]= (double)($i + $j + 1); 23: } 24: 25: // vec_b[i] = dim - i 26: for($i = 0; $i < $dim; $i++) 27: $vec_b[$i] = (double)($dim - $i); 28: 29: // vec_c := mat_a * vec_b 30: $stime = microtime(true); // float 31: for($i = 0; $i < $dim; $i++)

15 5.6 PHP vs. C 67 32: { 33: $vec_c[$i] = 0.0; 34: for($j = 0; $j < $dim; $j++) 35: $vec_c[$i] += $mat_a[$i][$j] * $vec_b[$j]; 36: } 37: $etime = microtime(true); 38: 39: 40: // print vec_c 41: for($i = 0; $i < $dim; $i++) 42: printf("vec_c[%d] = %fy=n", $i, $vec_c[$i]); 43: 44: 45: printf("execution time: %f [seconds]y=n", $etime - $stime); 46: 47: // free 48: unset($mat_a); 49: unset($vec_b); 50: unset($vec_c); 51:?> C (matmul.c) $./matmul 100 Dimension = 100 Clock number per second: 100 (clocks/sec) Run Time (Clock) : 0 Run Time (Second) : System Time (Second): User Time (Second) : $./matmul 200 Dimension = 200 Clock number per second: 100 (clocks/sec) Run Time (Clock) : 0 Run Time (Second) : System Time (Second): User Time (Second) : *2 PHP $ php matmul.php 100 ( ) Execution time: [seconds] $ php matmul.php 200 ( ) Execution time: [seconds] *2 Intel Core i CentOS 5.5 x86 64

16 68 5 PHP Web E matmul.php (HTML HTML ) 5 PHP HTML GET POST PHP HTML PHP

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ohp.mgp 2019/06/11 A/B -- HTML/WWW(World Wide Web -- (TA:, [ 1 ] !!? Web Page http://edu-gw2.math.cst.nihon-u.ac.jp/~kurino VNC Server Address : 10.9.209.159 Password : vnc-2019 (2019/06/04 : : * * / / : (cf.