{"id":9969,"date":"2024-03-15T04:05:05","date_gmt":"2024-03-14T19:05:05","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/php%e3%81%ae%e6%96%87%e5%ad%97%e5%88%97%e3%82%92%e5%88%87%e3%82%8a%e5%8f%96%e3%82%8bsubstr%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%82%92%e6%95%99%e3%81%88%e3%81%a6%e3%81%8f%e3%81%a0\/"},"modified":"2025-08-04T04:43:26","modified_gmt":"2025-08-03T19:43:26","slug":"php%e3%81%ae%e6%96%87%e5%ad%97%e5%88%97%e3%82%92%e5%88%87%e3%82%8a%e5%8f%96%e3%82%8bsubstr%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%82%92%e6%95%99%e3%81%88%e3%81%a6%e3%81%8f%e3%81%a0","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/php%e3%81%ae%e6%96%87%e5%ad%97%e5%88%97%e3%82%92%e5%88%87%e3%82%8a%e5%8f%96%e3%82%8bsubstr%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%82%92%e6%95%99%e3%81%88%e3%81%a6%e3%81%8f%e3%81%a0\/","title":{"rendered":"PHP substr\u95a2\u6570\uff1a\u6587\u5b57\u5217\u5207\u308a\u51fa\u3057\u306e\u57fa\u672c\u3068\u5fdc\u7528\u3010\u5fb9\u5e95\u89e3\u8aac\u3011"},"content":{"rendered":"

substr()\u95a2\u6570\u306f\u3001\u6587\u5b57\u5217\u3092\u5207\u308a\u53d6\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u3001\u57fa\u672c\u7684\u306a\u69cb\u6587\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n

substr<\/span>(string<\/span> $string<\/span>, int<\/span> $start<\/span>, ?int<\/span> $length<\/span> = null<\/span>) : string<\/span>\r\n<\/code><\/pre>\n
\u8aac\u660e\uff1a<\/p>\n
    \n
  1. $string: \u5207\u308a\u53d6\u308a\u305f\u3044\u5143\u306e\u6587\u5b57\u5217<\/li>\n
  2. \u958b\u59cb\u4f4d\u7f6e\u306f0\u304b\u3089\u6570\u3048\u307e\u3059\u3002<\/li>\n
  3. $length\u306f\u4efb\u610f\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3067\u3042\u308a\u3001\u53d6\u5f97\u3057\u305f\u3044\u9577\u3055\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u6307\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u6587\u5b57\u5217\u306e\u672b\u5c3e\u307e\u3067\u53d6\u5f97\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n
    \u30ab\u30f3\u30ac\u30eb\u30fc\u306f\u3001\u30aa\u30fc\u30b9\u30c8\u30e9\u30ea\u30a2\u306e\u56fd\u306e\u30b7\u30f3\u30dc\u30eb\u3067\u3059\u3002<\/p>\n
    $string<\/span> = \"Hello, World!\"<\/span>;\r\n$substring<\/span> = substr<\/span>($string<\/span>, 7<\/span>); \/\/ \u622a\u53d6\u4ece\u7b2c7\u4e2a\u5b57\u7b26\u5230\u5b57\u7b26\u4e32\u672b\u5c3e\u7684\u90e8\u5206<\/span>\r\necho<\/span> $substring<\/span>;\r\n\/\/ \u8f93\u51fa\uff1a World!<\/span>\r\n<\/code><\/pre>\n
    $string<\/span> = \"Hello, World!\"<\/span>;\r\n$substring<\/span> = substr<\/span>($string<\/span>, 0<\/span>, 5<\/span>); \/\/ \u622a\u53d6\u4ece\u7b2c0\u4e2a\u5b57\u7b26\u5f00\u59cb\u76845\u4e2a\u5b57\u7b26<\/span>\r\necho<\/span> $substring<\/span>;\r\n\/\/ \u8f93\u51fa\uff1a Hello<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
    substr()\u95a2\u6570\u306f\u3001\u6587\u5b57\u5217\u3092\u5207\u308a\u53d6\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u3001\u57fa\u672c\u7684\u306a\u69cb\u6587\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a substr(string $string, int $start, ?int $length = null) : string \u8aac […]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[161,452,26,4273,48,407],"class_list":["post-9969","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-php","tag-substr","tag-26","tag-4273","tag-48","tag-407"],"yoast_head":"\nPHP substr\u95a2\u6570\uff1a\u6587\u5b57\u5217\u5207\u308a\u51fa\u3057\u306e\u57fa\u672c\u3068\u5fdc\u7528\u3010\u5fb9\u5e95\u89e3\u8aac\u3011 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"PHP\u306esubstr()\u95a2\u6570\u3092\u4f7f\u3063\u305f\u6587\u5b57\u5217\u306e\u5207\u308a\u51fa\u3057\u65b9\u3092\u5fb9\u5e95\u89e3\u8aac\u3002\u57fa\u672c\u69cb\u6587\u304b\u3089\u5fdc\u7528\u4f8b\u3001\u6ce8\u610f\u70b9\u307e\u3067\u7db2\u7f85\u3002\u521d\u5fc3\u8005\u3067\u3082\u3059\u3050\u306b\u7406\u89e3\u3067\u304d\u308b\uff01\" \/>\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\u306e\u6587\u5b57\u5217\u3092\u5207\u308a\u53d6\u308bsubstr\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u3092\u6559\u3048\u3066\u304f\u3060\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PHP substr\u95a2\u6570\uff1a\u6587\u5b57\u5217\u5207\u308a\u51fa\u3057\u306e\u57fa\u672c\u3068\u5fdc\u7528\u3010\u5fb9\u5e95\u89e3\u8aac\u3011\" \/>\n<meta property=\"og:description\" content=\"PHP\u306esubstr()\u95a2\u6570\u3092\u4f7f\u3063\u305f\u6587\u5b57\u5217\u306e\u5207\u308a\u51fa\u3057\u65b9\u3092\u5fb9\u5e95\u89e3\u8aac\u3002\u57fa\u672c\u69cb\u6587\u304b\u3089\u5fdc\u7528\u4f8b\u3001\u6ce8\u610f\u70b9\u307e\u3067\u7db2\u7f85\u3002\u521d\u5fc3\u8005\u3067\u3082\u3059\u3050\u306b\u7406\u89e3\u3067\u304d\u308b\uff01\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/php\u306e\u6587\u5b57\u5217\u3092\u5207\u308a\u53d6\u308bsubstr\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u3092\u6559\u3048\u3066\u304f\u3060\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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