{"id":17670,"date":"2024-03-16T07:21:55","date_gmt":"2024-03-15T22:21:55","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/php%e3%81%aeempty%e9%96%a2%e6%95%b0%e3%81%ae%e6%a9%9f%e8%83%bd%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%e3%80%82\/"},"modified":"2025-08-06T12:57:35","modified_gmt":"2025-08-06T03:57:35","slug":"php%e3%81%aeempty%e9%96%a2%e6%95%b0%e3%81%ae%e6%a9%9f%e8%83%bd%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/php%e3%81%aeempty%e9%96%a2%e6%95%b0%e3%81%ae%e6%a9%9f%e8%83%bd%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%e3%80%82\/","title":{"rendered":"php\u306eempty\u95a2\u6570\u306e\u6a5f\u80fd\u306f\u4f55\u3067\u3059\u304b\u3002"},"content":{"rendered":"

empty\u95a2\u6570\u306f\u5909\u6570\u304c\u7a7a\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u5909\u6570\u3092\u5f15\u6570\u3068\u3057\u3066\u53d7\u3051\u53d6\u308a\u3001\u305d\u306e\u5909\u6570\u304c\u7a7a\u304b\u3069\u3046\u304b\u3092\u793a\u3059\u30d6\u30fc\u30eb\u5024\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n

\u5909\u6570\u304c\u7279\u5b9a\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3057\u305f\u5834\u5408\u3001empty\u95a2\u6570\u306ftrue\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n

    \n
  1. \u5909\u6570\u304c\u5b58\u5728\u3057\u306a\u3044\u304b\u3001null\u3067\u3059\u3002<\/li>\n
  2. \u5909\u6570\u304c\u7a7a\u306e\u6587\u5b57\u5217\uff08””\uff09\u3067\u3042\u308b<\/li>\n
  3. \u5909\u6570\u304c0\u3067\u3042\u308b\uff08\u6574\u6570\u578b\uff09<\/li>\n
  4. \u5909\u6570\u306f0.0\uff08\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\uff09\u3067\u3059\u3002<\/li>\n
  5. \u5909\u6570\u306f\u6587\u5b57\u5217\u578b\u306e”0″\u3067\u3059\u3002<\/li>\n<\/ol>\n

    \u4e0a\u8a18\u306e\u5834\u5408\u4ee5\u5916\u3001empty\u95a2\u6570\u306ffalse\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

    empty\u95a2\u6570\u306f\u5909\u6570\u304c\u7a7a\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u5909\u6570\u3092\u5f15\u6570\u3068\u3057\u3066\u53d7\u3051\u53d6\u308a\u3001\u305d\u306e\u5909\u6570\u304c\u7a7a\u304b\u3069\u3046\u304b\u3092\u793a\u3059\u30d6\u30fc\u30eb\u5024\u3092\u8fd4\u3057\u307e\u3059\u3002 \u5909\u6570\u304c\u7279\u5b9a\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3057\u305f\u5834\u5408\u3001empty\u95a2\u6570\u306ftrue\u3092\u8fd4\u3057\u307e\u3059\u3002 \u5909\u6570\u304c\u5b58\u5728\u3057\u306a […]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-17670","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"\nphp\u306eempty\u95a2\u6570\u306e\u6a5f\u80fd\u306f\u4f55\u3067\u3059\u304b\u3002 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"php\u306eempty\u95a2\u6570\u306e\u6a5f\u80fd\u306f\u4f55\u3067\u3059\u304b\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/ja\/blog\/php\u306eempty\u95a2\u6570\u306e\u6a5f\u80fd\u306f\u4f55\u3067\u3059\u304b\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"php\u306eempty\u95a2\u6570\u306e\u6a5f\u80fd\u306f\u4f55\u3067\u3059\u304b\u3002\" \/>\n<meta property=\"og:description\" content=\"php\u306eempty\u95a2\u6570\u306e\u6a5f\u80fd\u306f\u4f55\u3067\u3059\u304b\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/php\u306eempty\u95a2\u6570\u306e\u6a5f\u80fd\u306f\u4f55\u3067\u3059\u304b\u3002\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-15T22:21:55+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-06T03:57:35+00:00\" \/>\n<meta name=\"author\" content=\"\u82bd\u4f9d, \u96e8\u591c\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u82bd\u4f9d, \u96e8\u591c\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"1\u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/php%e3%81%aeempty%e9%96%a2%e6%95%b0%e3%81%ae%e6%a9%9f%e8%83%bd%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%e3%80%82\/\",\"url\":\"https:\/\/www.silicloud.com\/ja\/blog\/php%e3%81%aeempty%e9%96%a2%e6%95%b0%e3%81%ae%e6%a9%9f%e8%83%bd%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%e3%80%82\/\",\"name\":\"php\u306eempty\u95a2\u6570\u306e\u6a5f\u80fd\u306f\u4f55\u3067\u3059\u304b\u3002 - Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#website\"},\"datePublished\":\"2024-03-15T22:21:55+00:00\",\"dateModified\":\"2025-08-06T03:57:35+00:00\",\"author\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/aeb60a7861f2f002b54c66bd65bc6c27\"},\"description\":\"php\u306eempty\u95a2\u6570\u306e\u6a5f\u80fd\u306f\u4f55\u3067\u3059\u304b\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\",\"breadcrumb\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/php%e3%81%aeempty%e9%96%a2%e6%95%b0%e3%81%ae%e6%a9%9f%e8%83%bd%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%e3%80%82\/#breadcrumb\"},\"inLanguage\":\"ja\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.silicloud.com\/ja\/blog\/php%e3%81%aeempty%e9%96%a2%e6%95%b0%e3%81%ae%e6%a9%9f%e8%83%bd%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%e3%80%82\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/php%e3%81%aeempty%e9%96%a2%e6%95%b0%e3%81%ae%e6%a9%9f%e8%83%bd%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%e3%80%82\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.silicloud.com\/ja\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"php\u306eempty\u95a2\u6570\u306e\u6a5f\u80fd\u306f\u4f55\u3067\u3059\u304b\u3002\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#website\",\"url\":\"https:\/\/www.silicloud.com\/ja\/blog\/\",\"name\":\"Blog - Silicon Cloud\",\"description\":\"\",\"inLanguage\":\"ja\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/aeb60a7861f2f002b54c66bd65bc6c27\",\"name\":\"\u82bd\u4f9d, \u96e8\u591c\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/6305fe5cabc2b854c1208975a47fbf3f8cef3f7cd775b94dceedbe59b74a8010?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/6305fe5cabc2b854c1208975a47fbf3f8cef3f7cd775b94dceedbe59b74a8010?s=96&d=mm&r=g\",\"caption\":\"\u82bd\u4f9d, \u96e8\u591c\"},\"url\":\"https:\/\/www.silicloud.com\/ja\/blog\/author\/meiamaya\/\"},{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/php%e3%81%aeempty%e9%96%a2%e6%95%b0%e3%81%ae%e6%a9%9f%e8%83%bd%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%e3%80%82\/#local-main-organization-logo\",\"url\":\"\",\"contentUrl\":\"\",\"caption\":\"Blog - Silicon Cloud\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"php\u306eempty\u95a2\u6570\u306e\u6a5f\u80fd\u306f\u4f55\u3067\u3059\u304b\u3002 - Blog - Silicon Cloud","description":"php\u306eempty\u95a2\u6570\u306e\u6a5f\u80fd\u306f\u4f55\u3067\u3059\u304b\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.silicloud.com\/ja\/blog\/php\u306eempty\u95a2\u6570\u306e\u6a5f\u80fd\u306f\u4f55\u3067\u3059\u304b\u3002\/","og_locale":"ja_JP","og_type":"article","og_title":"php\u306eempty\u95a2\u6570\u306e\u6a5f\u80fd\u306f\u4f55\u3067\u3059\u304b\u3002","og_description":"php\u306eempty\u95a2\u6570\u306e\u6a5f\u80fd\u306f\u4f55\u3067\u3059\u304b\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002","og_url":"https:\/\/www.silicloud.com\/ja\/blog\/php\u306eempty\u95a2\u6570\u306e\u6a5f\u80fd\u306f\u4f55\u3067\u3059\u304b\u3002\/","og_site_name":"Blog - Silicon Cloud","article_published_time":"2024-03-15T22:21:55+00:00","article_modified_time":"2025-08-06T03:57:35+00:00","author":"\u82bd\u4f9d, \u96e8\u591c","twitter_card":"summary_large_image","twitter_misc":{"\u57f7\u7b46\u8005":"\u82bd\u4f9d, \u96e8\u591c","\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593":"1\u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.silicloud.com\/ja\/blog\/php%e3%81%aeempty%e9%96%a2%e6%95%b0%e3%81%ae%e6%a9%9f%e8%83%bd%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%e3%80%82\/","url":"https:\/\/www.silicloud.com\/ja\/blog\/php%e3%81%aeempty%e9%96%a2%e6%95%b0%e3%81%ae%e6%a9%9f%e8%83%bd%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%e3%80%82\/","name":"php\u306eempty\u95a2\u6570\u306e\u6a5f\u80fd\u306f\u4f55\u3067\u3059\u304b\u3002 - Blog - Silicon Cloud","isPartOf":{"@id":"https:\/\/www.silicloud.com\/ja\/blog\/#website"},"datePublished":"2024-03-15T22:21:55+00:00","dateModified":"2025-08-06T03:57:35+00:00","author":{"@id":"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/aeb60a7861f2f002b54c66bd65bc6c27"},"description":"php\u306eempty\u95a2\u6570\u306e\u6a5f\u80fd\u306f\u4f55\u3067\u3059\u304b\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002","breadcrumb":{"@id":"https:\/\/www.silicloud.com\/ja\/blog\/php%e3%81%aeempty%e9%96%a2%e6%95%b0%e3%81%ae%e6%a9%9f%e8%83%bd%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%e3%80%82\/#breadcrumb"},"inLanguage":"ja","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.silicloud.com\/ja\/blog\/php%e3%81%aeempty%e9%96%a2%e6%95%b0%e3%81%ae%e6%a9%9f%e8%83%bd%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%e3%80%82\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.silicloud.com\/ja\/blog\/php%e3%81%aeempty%e9%96%a2%e6%95%b0%e3%81%ae%e6%a9%9f%e8%83%bd%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%e3%80%82\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.silicloud.com\/ja\/blog\/"},{"@type":"ListItem","position":2,"name":"php\u306eempty\u95a2\u6570\u306e\u6a5f\u80fd\u306f\u4f55\u3067\u3059\u304b\u3002"}]},{"@type":"WebSite","@id":"https:\/\/www.silicloud.com\/ja\/blog\/#website","url":"https:\/\/www.silicloud.com\/ja\/blog\/","name":"Blog - Silicon Cloud","description":"","inLanguage":"ja"},{"@type":"Person","@id":"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/aeb60a7861f2f002b54c66bd65bc6c27","name":"\u82bd\u4f9d, \u96e8\u591c","image":{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/6305fe5cabc2b854c1208975a47fbf3f8cef3f7cd775b94dceedbe59b74a8010?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/6305fe5cabc2b854c1208975a47fbf3f8cef3f7cd775b94dceedbe59b74a8010?s=96&d=mm&r=g","caption":"\u82bd\u4f9d, \u96e8\u591c"},"url":"https:\/\/www.silicloud.com\/ja\/blog\/author\/meiamaya\/"},{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/www.silicloud.com\/ja\/blog\/php%e3%81%aeempty%e9%96%a2%e6%95%b0%e3%81%ae%e6%a9%9f%e8%83%bd%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%e3%80%82\/#local-main-organization-logo","url":"","contentUrl":"","caption":"Blog - Silicon Cloud"}]}},"_links":{"self":[{"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/posts\/17670","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/comments?post=17670"}],"version-history":[{"count":2,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/posts\/17670\/revisions"}],"predecessor-version":[{"id":93958,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/posts\/17670\/revisions\/93958"}],"wp:attachment":[{"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/media?parent=17670"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/categories?post=17670"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/tags?post=17670"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}