PHP初心者セッション2017

PHPを始めたばかりの人向けセッションです。今年は推奨環境をDockerにしています。

Transcript

1. PHPΧϯϑΝϨϯε2017 PHPॳ৺ऀηογϣϯ ˌphpcon2017_4 ೔ຊPHPϢʔβձ ༗ݶձࣾΞϦ΢ʔϓ ദԬɹलஉ
2. ΞδΣϯμ ࣗݾ঺հ PHPͷจ๏ ࣮ફฤ ͓·͚
3. ࣗݾ঺հ ༗ݶձࣾΞϦ΢ʔϓ WEBγεςϜ։ൃɾDevOpsͷಋೖίϯαϧςΟϯά
4. PHPͱ͸
5. 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
6. PHPͱ͸ WEB։ൃʹదͨ͠ݴޠ
7. PHPͷྺ࢙ 1994೥ʹRasmus͕ΦϯϥΠϯͰެ։͍ͯ͠Δܦྺॻ ͷΞΫηεཤྺΛௐ΂ΔͨΊʹ࢖ΘΕ͍ͯ·ͨ͠ ൴͸ͦͷεΫϦϓτ܈ΛʮPersonal Home Page Toolsʯͱ໊෇͚·ͨ͠ɻ http://php.net/manual/ja/history.php.php
8. PHPͷ؀ڥ
9. 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
10. ͲΜͳ؀ڥͰ͸͡ΊΔ͔
11. ϗεςΟϯά Ϩϯλϧαʔό
12. AWS Microsoft Azure Google App Engine IBM Bluemix
13. Ծ૝؀ڥ Vmware VirtualBox Docker
14. खܰʹ͸͡ΊΔͳΒ XAMPP MAMP https://www.apachefriends.org/ https://www.mamp.info/
15. αʔόʔ͍Βͣ cloud9 http://c9.io https://ide.c9.io/kashioka/test
16. Docker https://www.docker.com/ Windows,MacରԠ
17. Docker https://hub.docker.com/_/php/
18. docker compose ෳ਺ͷίϯςφΛ؅ཧͰ͖Δɻ https://docs.docker.com/compose/gettingstarted/
19. ਪ঑։ൃ؀ڥ docker-composeΛ࢖༻͢Δ৔߹ dockerͷΠϯετʔϧ docker-compose.ymlͷ࡞੒ dockerͷىಈ
20. 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
21. σΟϨΫτϦ docker-compose.yml apps —>>͕͜͜dockerͱڞ༗͞Ε͍ͯΔʢϏϧτΠ ϯαʔόͷσΟϨΫτϦʣ ϩʔΧϧͷϑΝΠϧΛमਖ਼͢ΔͱdockerଆͰ࣮ߦՄ ೳ
22. ىಈํ๏ ର৅σΟϨΫτϦʹҠಈͯ͠ docker-compose up -d ։࢝ docker-compose stop ऴྃ
23. ࣮ߦͯ͠ΈΔ
24. ؀ڥ͸͙͢ʹͰ͖·͢ɻ ࢼͯ͠Έ·͠ΐ͏ɻ ※ձ৔಺Ͱͷμ΢ϯϩʔυ͸͝ԕྀ͍ͩ͘͞
25. PHPͷ֓ཁ
26. PHPͷجຊ PHPͷจ๏͸௚ײతͰ͢ɻ ଞͷݴޠΛ΍͍ͬͯͳ͍ํ͕ށ࿭͍·ͤΜɻ WEBߏஙʹ࠷దͳݴޠͰ͢ɻ ࣌ʹ࣮຿Ͱ࢖͏ʹ͸৭ʑग़͖ͯ·͢ ※ݸਓͷײ૝Ͱ͢
27. PHPλά <?php ?>ɹPHPϞʔυ; HTMLͷλάͷΑ͏ͳΠϝʔδ;
28. <html> <body> <?php echo "͜Μʹͪ͸"; ?> </body> </html> Ұ൪͔ΜͨΜͳαϯϓϧ http://localhost:8888/1st.php
29. ֦ுࢠ ϑΝΠϧ໊.php
30. ߏจ ม਺͸$Ͱ࢝·Δ; จ຤͸;ͰऴΘΔ ܕએݴͳͲ͸ݫີʹߦΘͳͯ͘OK͕ͩޙʑ ໘౗…… ؆୯ͳαϯϓϧΛݟͯΈ·͠ΐ͏
31. <?php $a = '͜Μʹͪ͸'; echo $a;
32. PHP͔ΒHTML΋ग़ྗ
33. <?php echo "<html>"; echo "<body>"; echo "͜Ε͸PHPͰ͢"; echo "</body>"; echo "</html>"; http://localhost:8888/sample0.php
34. ݁߹ͨ͠Γܭࢉͨ͠Γ .(υοτʣΛ࢖ͬͯจࣈྻͷ݁߹͕Ͱ͖ ·͢ɻ ਺஋ͷԋࢉ͸+-*/ php7·Ͱ͸จࣈྻͷ਺ࣈͰ΋଍͠ࢉͰ ͖͍ͯͨɻ
35. <?php $a = 1; $b = 2; echo $a + $b; echo '<br>'; echo $a . $b; http://localhost:8888/sample4.php
36. <?php $a = "phpcon"; $b = 2016; echo $a . ($b + 1); http://localhost:8888/sample2.php
37. PHPͷؔ਺ εΫϦϓτݴޠͷؔ਺͸਌͠Έ΍͍͢ ͳΜͱͳؔ͘਺Λ͍֮͑ͯΕ͹OK if foreach strlen htmlspecialchars nl2br mb_convert_encording
38. if ʙ else (endif) ৚݅൑ఆΛߦ͏ ৚݅Λຬͨ͢ຬͨ͞ͳ͍ͷ൑அΛߦ͏
39. <?php if($a) { echo '৚݅Λຬͨ͢'; } else { echo '৚݅Λຬͨ͞ͳ͍'; } http://localhost:8888/if.php
40. <div> <?php if($a): ?> <div id='a'>ຬͨ͢</div> <?php else: ?> <div id=''>ຬͨ͞ͳ͍</div> <?php endif; ?> </div> http://localhost:8888/div.php
41. HTML૊ΈࠐΈܕͷαϯϓϧ Wordpressͷ৔߹ wp-content/themes/twentyseventeen/ header.php
42. foreach <?php $numbers = array('2','3','4','5','6'); foreach($numbers as $val) { echo $val; } http://localhost:8888/sample5.php
43. htmlspecialchars ˍ"'<>ͱ͍ͬͨHTMLͰҙຯ͋ΔจࣈΛhtmlͷදࣔܗ ࣜʹม׵͢Δ = javascriptɺෆਖ਼ͳsql࣮ߦ౳ʹΑΔηΩϡϦςΟʔϦ εΫΛճආ͢Δɻ ೖྗ͞Εͨσʔλ͸ग़ྗ͢Δ௚લʹඞͣ htmlspecialcharsΛ௨͢
44. 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
45. ϑΝΠϧͷಡΈࠐΈ htmlͷྔ࢈ʹ΋ศར
46. require_once <?php require_once('header.html'); require_once('body.php'); require_once('footer.html'); http://localhost:8888/require.php
47. ஋Λऔಘ͢Δ ೖྗϑΥʔϜ͔Βೖྗ͞Εͨ஋ $_POST http://localhost:8888/get.php?id=123456 $_GET
48. ஋ͷऔಘ <?php echo $_GET['id']; echo $_POST['id'];
49. ஋ͷ֬ೝ var_dump()
50. ؔ਺ ܁Γฦ͞ΕΔॲཧΛڞ௨Խ function ؔ਺໊([Ҿ਺,,,]) { } ͳΜͲ΋ग़ͯ͘ΔॲཧΛؔ਺Խ͓ͯ͘͠ɻ
51. ؔ਺αϯϓϧ function hsp($str) { return htmlspecialchars($str,ENT_QUOTES); } function add1($num = 0) { return $num + 1; }
52. ͜Ε͘Β͍Θ͔Ε͹OK PHPͷΦϯϥΠϯϚχϡΞϧͷॆ࣮౓͕ੌ͍ PHPͷྺ࢙ ݴޠϦϑΝϨϯε
53. αϯϓϧΞϓϦέʔγϣϯ
54. ࣮ફฤ λΠϜςʔϒϧΛͭ͘Δ
55. CSVσʔλΛ࡞Δ ϓϩάϥϜͰѻ͏ͨΊʹ͸CSV(ΧϯϚ۠੾Γ)΍TSV(λ ϒ۠੾Γ)ͱ͍ͬͨσʔλ͕खؒΛল͚Δ ExcelͰ࡞੒Մೳ
56. Tips MacͷExcelͷ৔߹վߦίʔυͷม׵͕ඞཁɻ Ұ୴file_get_contentsͳͲͰશ෦ಡΈࠐΜͰਖ਼نදݱͰ͔͑Δ ͳͲ Vi΍ίϚϯυϥΠϯͰม׵ͯ͠΋ྑ͍ :1,$ s/^M/¥r/g ͳͲ^M͸ctl+vͷޙʹctr+mͰೖྗ
57. CSVΛಡΈࠐΉ ؔ਺໊͕Θ͔Βͳ͚Ε͹ͱΓ͋͑ͣݕࡧ
58. fgetcsvͬͯͷ͕ݟ͔ͭͬͨ http://php.net/manual/ja/function.fgetcsv.php ͕Μ͹ͬͯಡΉͱΘ͔Δ Θ͔Βͳ͚Ε͹αϯϓϧΛ
59. 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
60. ϚχϡΞϧͰௐ΂ͯΈΑ͏ Θ͔Βͳ͍ؔ਺Λӈ্ʹೖΕͯΈΔɻ
61. ௐ΂ͯΈΔͱ fopen — ϑΝΠϧ·ͨ͸ URL ΛΦʔϓϯ͢Δ whileϧʔϓ͸ɺPHPͰ࠷΋؆୯ͳλΠϓͷϧʔϓͰ͢ɻ count — ม਺ʹؚ·ΕΔ͢΂ͯͷཁૉɺ ͋Δ͍͸Φϒ δΣΫτʹؚ·ΕΔԿ͔ͷ਺Λ਺͑Δ fclose — Φʔϓϯ͞ΕͨϑΝΠϧϙΠϯλΛΫϩʔζ͢Δ ͜ΕΛ౿·͑ͯ
62. ͳΜͱͳ͘Θ͔ͬͨ
63. ςʔϒϧͰදࣔͯ͠Έ·͠ΐ͏ɻ
64. ςʔϒϧͷߏ଄ ಉ͡Α͏ͳ෦෼ΛϧʔϓͰදࣔͤ͞Δ
67. ৭ʑௐ੔ͯ͠ΈΑ͏ ߲໨Λ̐ͭදࣔ͢Δ ද߲ࣔ໨ʹ͸htmlspecialchars()Λ͔͚Δ http://localhost:8888/sample2/list.php
68. αϯϓϧιʔε
69. <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); } ?>
70. ϚχϡΞϧͱ஥ྑ͘ͳΖ͏
71. ֤஍Ͱ։࠵͞Ε͍ͯΔPHPΧ ϯϑΝϨϯε
72. ࠙਌ձ ଞͷ։ൃऀ΍εϐʔΧʔͱ௚઀࿩͢νϟϯε!
73. ͓קΊॻ੶ ʮ͍ͪ͹Μ΍͍͞͠PHPͷڭຊʯࢲ͕ॻ͍͍ͯ·͢ɻ ͍·ԿΛ࡞͍ͬͯΔͷ͔Λߟ͑Δ
74. ·ͱΊ খ͍͞΋ͷͰ͍͍ͷͰॻ͍ͯݟ·͠ΐ͏ɻ ϚχϡΞϧ͕ศརͰ͢ɻ
75. ͱʹ͔͘ॻ͍ͯΈΔʂ Ҏ্
76. ͝੩ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ɻ ΧϯϑΝϨϯεΛָ͠ΜͰ͍ͩ͘͞ʂ ໌೔ͷ։ൃΧϯϑΝϨϯε
 ˌ͔͋͢Μɹ 2018೥4݄։࠵༧ఆʂ
77. PHPॳ৺ऀηογϣϯ ༗ݶձࣾΞϦ΢ʔϓ ദԬɹलஉ twitter,facebook @kashioka