PHP初心者セッション2017

PHPΧϯϑΝϨϯε2017 PHPॳ৺ऀηογϣϯ ˌphpcon2017_4 ೔ຊPHPϢʔβձ ༗ݶձࣾΞϦ΢ʔϓ ദԬɹलஉ

ΞδΣϯμ ࣗݾ঺հ PHPͷจ๏ ࣮ફฤ ͓·͚

ࣗݾ঺հ ༗ݶձࣾΞϦ΢ʔϓ WEBγεςϜ։ൃɾDevOpsͷಋೖίϯαϧςΟϯά

PHPͱ͸

PHPͱ͸ PHP is a popular general-purpose scripting language that is
especially suited to web development. Fast, ﬂexible and pragmatic, PHP powers everything from your blog to the most popular websites in the world. http://php.net/ΑΓ

PHPͱ͸ WEB։ൃʹదͨ͠ݴޠ

PHPͷྺ࢙ 1994೥ʹRasmus͕ΦϯϥΠϯͰެ։͍ͯ͠Δܦྺॻ ͷΞΫηεཤྺΛௐ΂ΔͨΊʹ࢖ΘΕ͍ͯ·ͨ͠ ൴͸ͦͷεΫϦϓτ܈ΛʮPersonal Home Page Toolsʯͱ໊෇͚·ͨ͠ɻ http://php.net/manual/ja/history.php.php

PHPͷ؀ڥ

LAMP LAPP LEMP Linux Apache MySQL PHP Linux Apache Postgre
PHP Linux Nginx MariaDB PHP ݺͼํ͸ OS+Web Server+Database+Script WAMPͱ͔LAMRͱ͔΋ݕࡧͰ͸͋Γ·ͨ͠ɻ

ͲΜͳ؀ڥͰ͸͡ΊΔ͔

ϗεςΟϯά Ϩϯλϧαʔό

AWS Microsoft Azure Google App Engine IBM Bluemix

Ծ૝؀ڥ Vmware VirtualBox Docker

खܰʹ͸͡ΊΔͳΒ XAMPP MAMP https://www.apachefriends.org/ https://www.mamp.info/

αʔόʔ͍Βͣ cloud9 http://c9.io https://ide.c9.io/kashioka/test

Docker https://www.docker.com/ Windows,MacରԠ

Docker https://hub.docker.com/_/php/

docker compose ෳ਺ͷίϯςφΛ؅ཧͰ͖Δɻ https://docs.docker.com/compose/gettingstarted/

ਪ঑։ൃ؀ڥ docker-composeΛ࢖༻͢Δ৔߹ dockerͷΠϯετʔϧ docker-compose.ymlͷ࡞੒ dockerͷىಈ

docker-compose.yml version: '3' services: php: image: php:7.1-alpine expose: - '8080'
ports: - '8080:80' volumes: - ./apps:/home/www-data working_dir: /home/www-data command: php -S 0.0.0.0:80 docker Πϝʔδ໊ ެ։ϙʔτ ϗετଆͱίϯς φͷϙʔτ ϘϦϡʔϜͷϚ΢ϯτ ίϚϯυͷ࣮ߦ  ϏϧτΠϯαʔό

σΟϨΫτϦ docker-compose.yml apps —>>͕͜͜dockerͱڞ༗͞Ε͍ͯΔʢϏϧτΠ ϯαʔόͷσΟϨΫτϦʣ ϩʔΧϧͷϑΝΠϧΛमਖ਼͢ΔͱdockerଆͰ࣮ߦՄ ೳ

ىಈํ๏ ର৅σΟϨΫτϦʹҠಈͯ͠ docker-compose up -d ։࢝ docker-compose stop ऴྃ

࣮ߦͯ͠ΈΔ

؀ڥ͸͙͢ʹͰ͖·͢ɻ ࢼͯ͠Έ·͠ΐ͏ɻ ※ձ৔಺Ͱͷμ΢ϯϩʔυ͸͝ԕྀ͍ͩ͘͞

PHPͷ֓ཁ

PHPͷجຊ PHPͷจ๏͸௚ײతͰ͢ɻ ଞͷݴޠΛ΍͍ͬͯͳ͍ํ͕ށ࿭͍·ͤΜɻ WEBߏஙʹ࠷దͳݴޠͰ͢ɻ ࣌ʹ࣮຿Ͱ࢖͏ʹ͸৭ʑग़͖ͯ·͢ ※ݸਓͷײ૝Ͱ͢

PHPλά <?php ?>ɹPHPϞʔυ; HTMLͷλάͷΑ͏ͳΠϝʔδ;

<html> <body> <?php echo "͜Μʹͪ͸"; ?> </body> </html> Ұ൪͔ΜͨΜͳαϯϓϧ http://localhost:8888/1st.php

֦ுࢠ ϑΝΠϧ໊.php

ߏจ ม਺͸$Ͱ࢝·Δ; จ຤͸;ͰऴΘΔ ܕએݴͳͲ͸ݫີʹߦΘͳͯ͘OK͕ͩޙʑ ໘౗…… ؆୯ͳαϯϓϧΛݟͯΈ·͠ΐ͏

<?php $a = '͜Μʹͪ͸'; echo $a;

PHP͔ΒHTML΋ग़ྗ

<?php echo "<html>"; echo "<body>"; echo "͜Ε͸PHPͰ͢"; echo "</body>"; echo
"</html>"; http://localhost:8888/sample0.php

݁߹ͨ͠Γܭࢉͨ͠Γ .(υοτʣΛ࢖ͬͯจࣈྻͷ݁߹͕Ͱ͖ ·͢ɻ ਺஋ͷԋࢉ͸+-*/ php7·Ͱ͸จࣈྻͷ਺ࣈͰ΋଍͠ࢉͰ ͖͍ͯͨɻ

<?php $a = 1; $b = 2; echo $a +
$b; echo '<br>'; echo $a . $b; http://localhost:8888/sample4.php

<?php $a = "phpcon"; $b = 2016; echo $a .
($b + 1); http://localhost:8888/sample2.php

PHPͷؔ਺ εΫϦϓτݴޠͷؔ਺͸਌͠Έ΍͍͢ ͳΜͱͳؔ͘਺Λ͍֮͑ͯΕ͹OK if foreach strlen htmlspecialchars nl2br mb_convert_encording

if ʙ else (endif) ৚݅൑ఆΛߦ͏ ৚݅Λຬͨ͢ຬͨ͞ͳ͍ͷ൑அΛߦ͏

<?php if($a) { echo '৚݅Λຬͨ͢'; } else { echo '৚݅Λຬͨ͞ͳ͍';
} http://localhost:8888/if.php

<div> <?php if($a): ?> <div id='a'>ຬͨ͢</div> <?php else: ?> <div
id=''>ຬͨ͞ͳ͍</div> <?php endif; ?> </div> http://localhost:8888/div.php

HTML૊ΈࠐΈܕͷαϯϓϧ Wordpressͷ৔߹ wp-content/themes/twentyseventeen/ header.php

foreach <?php $numbers = array('2','3','4','5','6'); foreach($numbers as $val) { echo
$val; } http://localhost:8888/sample5.php

htmlspecialchars ˍ"'<>ͱ͍ͬͨHTMLͰҙຯ͋ΔจࣈΛhtmlͷදࣔܗ ࣜʹม׵͢Δ = javascriptɺෆਖ਼ͳsql࣮ߦ౳ʹΑΔηΩϡϦςΟʔϦ εΫΛճආ͢Δɻ ೖྗ͞Εͨσʔλ͸ग़ྗ͢Δ௚લʹඞͣ htmlspecialcharsΛ௨͢

htmlspecialchars <?php $new ="<a href='test'>Test</a>"; echo $new; <?php $new ="<a
href='test'>Test</a>"; echo htmlspecialchars($new,ENT_QUOTES); http://localhost:8888/sample3.php

ϑΝΠϧͷಡΈࠐΈ htmlͷྔ࢈ʹ΋ศར

require_once <?php require_once('header.html'); require_once('body.php'); require_once('footer.html'); http://localhost:8888/require.php

஋Λऔಘ͢Δ ೖྗϑΥʔϜ͔Βೖྗ͞Εͨ஋ $_POST http://localhost:8888/get.php?id=123456 $_GET

஋ͷऔಘ <?php echo $_GET['id']; echo $_POST['id'];

஋ͷ֬ೝ var_dump()

ؔ਺ ܁Γฦ͞ΕΔॲཧΛڞ௨Խ function ؔ਺໊([Ҿ਺,,,]) { } ͳΜͲ΋ग़ͯ͘ΔॲཧΛؔ਺Խ͓ͯ͘͠ɻ

ؔ਺αϯϓϧ function hsp($str) { return htmlspecialchars($str,ENT_QUOTES); } function add1($num =
0) { return $num + 1; }

͜Ε͘Β͍Θ͔Ε͹OK PHPͷΦϯϥΠϯϚχϡΞϧͷॆ࣮౓͕ੌ͍ PHPͷྺ࢙ ݴޠϦϑΝϨϯε

αϯϓϧΞϓϦέʔγϣϯ

࣮ફฤ λΠϜςʔϒϧΛͭ͘Δ

CSVσʔλΛ࡞Δ ϓϩάϥϜͰѻ͏ͨΊʹ͸CSV(ΧϯϚ۠੾Γ)΍TSV(λ ϒ۠੾Γ)ͱ͍ͬͨσʔλ͕खؒΛল͚Δ ExcelͰ࡞੒Մೳ

Tips MacͷExcelͷ৔߹վߦίʔυͷม׵͕ඞཁɻ Ұ୴ﬁle_get_contentsͳͲͰશ෦ಡΈࠐΜͰਖ਼نදݱͰ͔͑Δ ͳͲ Vi΍ίϚϯυϥΠϯͰม׵ͯ͠΋ྑ͍ :1,$ s/^M/¥r/g ͳͲ^M͸ctl+vͷޙʹctr+mͰೖྗ

CSVΛಡΈࠐΉ ؔ਺໊͕Θ͔Βͳ͚Ε͹ͱΓ͋͑ͣݕࡧ

fgetcsvͬͯͷ͕ݟ͔ͭͬͨ http://php.net/manual/ja/function.fgetcsv.php ͕Μ͹ͬͯಡΉͱΘ͔Δ Θ͔Βͳ͚Ε͹αϯϓϧΛ

αϯϓϧΛ࢖ͬͯΈΔ ಈ͔ͯ͠ΈΔ http://localhost:8888/sample1/list.php Warning: fopen(test.csv): failed to open stream: No
such ﬁle or directory in /home/www-data/sample1/ list.php on line 3 Τϥʔ͕ͰΔͷͰcsvΛࠩ͠ସ͑ΔͱͲ͏ͳΔ͔

ϚχϡΞϧͰௐ΂ͯΈΑ͏ Θ͔Βͳ͍ؔ਺Λӈ্ʹೖΕͯΈΔɻ

ௐ΂ͯΈΔͱ fopen — ϑΝΠϧ·ͨ͸ URL ΛΦʔϓϯ͢Δ whileϧʔϓ͸ɺPHPͰ࠷΋؆୯ͳλΠϓͷϧʔϓͰ͢ɻ count — ม਺ʹؚ·ΕΔ͢΂ͯͷཁૉɺ
͋Δ͍͸Φϒ δΣΫτʹؚ·ΕΔԿ͔ͷ਺Λ਺͑Δ fclose — Φʔϓϯ͞ΕͨϑΝΠϧϙΠϯλΛΫϩʔζ͢Δ ͜ΕΛ౿·͑ͯ

ͳΜͱͳ͘Θ͔ͬͨ

ςʔϒϧͰදࣔͯ͠Έ·͠ΐ͏ɻ

ςʔϒϧͷߏ଄ ಉ͡Α͏ͳ෦෼ΛϧʔϓͰදࣔͤ͞Δ

৭ʑௐ੔ͯ͠ΈΑ͏ ߲໨Λ̐ͭදࣔ͢Δ ද߲ࣔ໨ʹ͸htmlspecialchars()Λ͔͚Δ http://localhost:8888/sample2/list.php

αϯϓϧιʔε

<h1>ίϯϕϯγϣϯϗʔϧηογϣϯ</h1> ߜΓࠐΈɿ<a href="list2.php?room=᳉">᳉</a> <a href="list2.php?room=ക">ക</a> <table border=1> <?php if (($handle
= fopen("timetable2.csv", "r")) !== FALSE) { while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) { if ($_GET['room'] === $data[0] ) { echo "<tr>"; echo "<td>". hsc($data[0])."</td>\n"; echo "<td>". hsc($data[1])."</td>\n"; echo "<td>". hsc($data[2])."</td>\n"; echo "<td>". hsc($data[3])."෼</td>\n"; echo "</tr>"; } } fclose($handle); } ?> </table> <?php function hsc($str) { return htmlspecialchars($str,ENT_QUOTES); } ?>

ϚχϡΞϧͱ஥ྑ͘ͳΖ͏

֤஍Ͱ։࠵͞Ε͍ͯΔPHPΧ ϯϑΝϨϯε

࠙਌ձ ଞͷ։ൃऀ΍εϐʔΧʔͱ௚઀࿩͢νϟϯε!

͓קΊॻ੶ ʮ͍ͪ͹Μ΍͍͞͠PHPͷڭຊʯࢲ͕ॻ͍͍ͯ·͢ɻ ͍·ԿΛ࡞͍ͬͯΔͷ͔Λߟ͑Δ

·ͱΊ খ͍͞΋ͷͰ͍͍ͷͰॻ͍ͯݟ·͠ΐ͏ɻ ϚχϡΞϧ͕ศརͰ͢ɻ

ͱʹ͔͘ॻ͍ͯΈΔʂ Ҏ্

͝੩ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ɻ ΧϯϑΝϨϯεΛָ͠ΜͰ͍ͩ͘͞ʂ ໌೔ͷ։ൃΧϯϑΝϨϯε  ˌ͔͋͢Μɹ 2018೥4݄։࠵༧ఆʂ

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PHP初心者セッション2017

PHP初心者セッション2017

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