Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Speaker Deck
PRO
Sign in
Sign up
for free
型を意識したPHPアプリケーション開発
shin1x1
October 08, 2017
Technology
5
8.7k
型を意識したPHPアプリケーション開発
2017/10/08 PHPカンファレンス2017
https://github.com/shin1x1/phpcon2017
shin1x1
October 08, 2017
Tweet
Share
More Decks by shin1x1
See All by shin1x1
shin1x1
0
700
shin1x1
3
2.4k
shin1x1
0
1.7k
shin1x1
2
3.5k
shin1x1
1
4.2k
shin1x1
5
4.6k
shin1x1
23
4.6k
shin1x1
4
1.1k
shin1x1
5
2.8k
Other Decks in Technology
See All in Technology
tnmt
3
240
pg0084
1
130
azara
1
910
legalforce
PRO
3
200
kahara33
0
110
uzabasetech
0
120
hayatan
0
200
tenjuu99
1
260
miyake
1
430
ihcomega56
1
580
youtalk
0
420
mii3king
0
430
Featured
See All Featured
mojombo
359
62k
thoeni
3
610
geeforr
332
29k
edds
56
9.4k
zenorocha
296
40k
lara
590
61k
paulrobertlloyd
71
3.6k
holman
461
280k
shpigford
165
19k
lara
172
9.6k
holman
288
130k
ddemaree
273
31k
Transcript
ܕΛҙࣝͨ͠ 1)1ΞϓϦέʔγϣϯ։ൃ ɹ!shin1x1 2017//08 phpcon 2017
https://php-genba.shin1x1.com/
D .BTBTIJ4IJOCBSB!TIJOY ΞδΣϯμ w1)1ͷܕγεςϜ wܕએݴΛར༻ͨ͠ίʔυ࣮ wυϝΠϯಛԽܕͷ࣮5JQT w͍͞͝ʹ
1)1ͷܕγεςϜ
&MPRVFOU 3FQPTJUPSZ $foo = 123; echo gettype($foo), PHP_EOL; => integer
$foo = 'Hello'; echo gettype($foo), PHP_EOL; => string $foo = [1, 2, 3]; echo gettype($foo), PHP_EOL; => array มܕΛ࣋ͨͳ͍ɺ͕ܕΛ࣋ͭ
&MPRVFOU 3FQPTJUPSZ echo 10 + 5, PHP_EOL; => 15 ԋࢉࢠJOUܕͱqPBUܕ͕ର
҉తܕม
&MPRVFOU 3FQPTJUPSZ echo 10 + "5", PHP_EOL; => 15 TUSJOH͕JOUʹม͞ΕΔ
҉తܕม
&MPRVFOU 3FQPTJUPSZ echo 10 + "5e", PHP_EOL; => 15 ҉తܕม
&MPRVFOU 3FQPTJUPSZ echo 10 + "5e2", PHP_EOL; => ??? ҉తܕม
&MPRVFOU 3FQPTJUPSZ echo 10 + "5e2", PHP_EOL; => 510 ҉తܕม
&MPRVFOU 3FQPTJUPSZ 5e2 ʢ5=Ծ෦, 2=ࢦ෦, 10=جʣ => 5 * (10
** 2) => 500 ˞ࢦදه
&MPRVFOU 3FQPTJUPSZ <?php declare(strict_types=1); function double(int $i): int { return
$i * 2; } double(1); // 2 double(“5e”); // TypeError ܕએݴ
D .BTBTIJ4IJOCBSB!TIJOY 1)1ͷܕγεςϜ w͕ܕΛ࣋ͭ w҉తܕมͰॊೈʹ։ൃ wܕએݴͰݫີʹ։ൃ wϢʔβ͕ελΠϧΛબͰ͖Δ
ܕΛ׆༻ͨ͠1)1ίʔυͷ࣮
D .BTBTIJ4IJOCBSB!TIJOY FY੫ࠐΈՁ֨ͷࢉग़ wՁ֨ ফඅ੫ খҎԼΓࣺͯ wՁ֨ਖ਼ͷ
wফඅ੫খͱ͢Δʢʣ
D .BTBTIJ4IJOCBSB!TIJOY %FNP wܕએݴແ͠ wεΧϥʔܕͰܕએݴ wϢʔβఆٛܕͰܕએݴ
D .BTBTIJ4IJOCBSB!TIJOY %FNP https://github.com/shin1x1/phpcon2017
D .BTBTIJ4IJOCBSB!TIJOY υϝΠϯʹಛԽͨ͠ܕΛ࡞Δ wΞϓϦέʔγϣϯυϝΠϯΛදݱ wυϝΠϯϧʔϧΛݕূ wܕએݴʹΑΔදݱͱڧ੍
&MPRVFOU 3FQPTJUPSZ // ܕએݴແ͠ function calculate($price, $taxRate) // υϝΠϯಛԽܕͰܕએݴ function
calculate( Price $price, TaxRate $taxRate): PriceWithTax
υϝΠϯಛԽܕͷ࣮5JQT
D .BTBTIJ4IJOCBSB!TIJOY ҆қʹܧঝΛΘͳ͍ wܧঝݩΫϥεܕͷద߹Λ͙ wܧঝݩϝιουؚ͕·Εͯ͠·͏ wҕৡτϨΠτͰڞ༗
&MPRVFOU 3FQPTJUPSZ // ܧঝ final class PriceWithTax extends Price {}
ܧঝ $price = PriceWithTaxCalculator::calculate($price, $taxRate); // PriceWithTax Price ܕͳͷͰಈ͍ͯ͠·͏ $price = PriceWithTaxCalculator::calculate($price, $taxRate);
D .BTBTIJ4IJOCBSB!TIJOY Πϛϡʔλϒϧʹ͢Δͱ҆શ wશίϯετϥΫλ wෆม݅ݕূ͕ҰͰࡁΉ wϛϡʔλϒϧͳΒݕূ
D .BTBTIJ4IJOCBSB!TIJOY ϑΝΫτϦϝιου wίϯετϥΫλΛQSJWBUF wϑΝΫτϦϝιου wҾʹΑΔόϦΤʔγϣϯ
&MPRVFOU 3FQPTJUPSZ ϑΝΫτϦϝιου public static function of(float $value): self {
return new self($value); } public static function ofByInt(int $value): self { return new self($value / 100); }
&MPRVFOU 3FQPTJUPSZ ϑΝΫτϦϝιου // float TaxRate::of(0.08); // int TaxRate::ofByInt(8);
D .BTBTIJ4IJOCBSB!TIJOY ։ൃͰͷܕݕࠪ wࣗಈςετ $* w1IQ4UPSN w1IBO
D .BTBTIJ4IJOCBSB!TIJOY 1IQ4UPSN wΤσΟλ ϦΞϧλΠϜͳνΣοΫ w*OTQFDU$PEFT ϓϩδΣΫτશମΛҰׅνΣοΫ w6TBHFTPG ܕͷར༻ҰཡΛྻڍ
D .BTBTIJ4IJOCBSB!TIJOY 1IBO w1)1Ͱ࣮͞Εͨ$-*πʔϧ wܕෆҰகTUSJDUҧͳͲΛݕ w$*Ͱܕݕࠪ https://github.com/phan/phan
͍͞͝ʹ
wܕએݴͰܕΛڧ੍ wυϝΠϯΛܕͰදݱ wܕͰؾ͍͍࣋ͪ։ൃΛ D .BTBTIJ4IJOCBSB!TIJOY ܕΛ׆༻ͨ͠։ൃ
D .BTBTIJ4IJOCBSB!TIJOY !TIJOY !TIJOY D .BTBTIJ4IJOCBSB!TIJOY