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ҙ֎ʹศརͩͬͨ 2019/10/30 PHPษڧձ@౦ژ લా ਓ
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ࣗݾհ w લాਓ w !DIJSPSVYYYY w 3PYY
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w εϙϯαʔืूதͰ͢ʂʂ
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ҙ֎ʹศརͩͬͨ
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ʮʯҙ֎ʹศརͩͬͨ
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1)1ʹ͓͚Δʮʯ ͭ͋Δ
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ՄมݸҾؔ function printArgs(...$inputs) { echo $inputs[0]; // apple echo $inputs[1]; // banana echo $inputs[2]; // chocolate } printArgs('apple', 'banana', 'chocolate');
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ҾͷΞϯύοΫ function printArgs($a, $b, $c) { // (ུ) } $args = ['apple', 'banana', 'chocolate']; printArgs(...$args);
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͍͕ͬͯͨʜ w ػೳ͕ଘࡏ͢Δ͜ͱͬͯͨ w Ͱ࣮ࡍશવͬͯͳ͔ͬͨ w ΠϚΠν͍Ͳ͜Ζ͕Θ͔Βͳ͔ͬͨ ࠷ۙɺศརͳ͍ํΛݟ͚ͭͨ
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ྫ w ࣗͰఆٛͨ͠4UBUVTΫϥε͕͋Δ w 4UBUVTΛෳѻ͏Ϋϥε͕΄͍͠ w ྻΛϥοϓͨ͠Ϋϥε w ཁ݅ҎԼ w ҙͷͷ4UBUVTΠϯελϯεΛཁૉʹ࣋ͭ w 4UBUVTΠϯελϯεҎ֎Λཁૉʹ͍͚࣋ͬͯͳ͍ w Ωʔ࿈൪ͷΈʹ͢Δ ࿈ྻʹ͠ͳ͍
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·ͣී௨ʹ࣮͠·͢
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ී௨ͷ࣮ class StatusCollection { private $items; public function __construct(array $items) { $this->items = $items; } } $items = [Status::random(), Status::random(), Status::random()]; new StatusCollection($items);
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ී௨ͷ࣮ class StatusCollection { private $items; public function __construct(array $items) { foreach ($items as $item) { if (!$item instanceof Status) { throw new InvalidArgumentException(); } } $this->items = $items; } } $items = [Status::random(), Status::random(), Status::random()]; new StatusCollection($items);
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ී௨ͷ࣮ class StatusCollection { private $items; public function __construct(array $items) { foreach ($items as $item) { if (!$item instanceof Status) { throw new InvalidArgumentException(); } } $this->items = array_values($items); } } $items = [Status::random(), Status::random(), Status::random()]; new StatusCollection($items);
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Λ͍͖ͬͯ·͢ʂ
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Λ࣮ͬͨ class StatusCollection { private $items; public function __construct(...$items) { foreach ($items as $item) { if (!$item instanceof Status) { throw new InvalidArgumentException(); } } $this->items = $items; } } $items = [Status::random(), Status::random(), Status::random()]; new StatusCollection(...$items);
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Λ࣮ͬͨ class StatusCollection { private $items; public function __construct(Status ...$items) { $this->items = $items; } } $items = [Status::random(), Status::random(), Status::random()]; new StatusCollection(...$items);
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ศརʂʂ
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·ͱΊ w ʮʯΛ͏ͱҎԼͷέʔεͰϥΫʹͳΔ w ྻͷΩʔʹ͍ͭͯߟ͑ͨ͘ͳ͍ͱ͖ w ྻͷཁૉͷܕΛറΓ͍ͨͱ͖