{"id":3654,"date":"2023-03-03T14:00:16","date_gmt":"2023-03-03T05:00:16","guid":{"rendered":"https:\/\/taitan916.info\/blog\/?p=3654"},"modified":"2023-03-03T14:45:41","modified_gmt":"2023-03-03T05:45:41","slug":"post-3654","status":"publish","type":"post","link":"https:\/\/taitan916.info\/blog\/archives\/3654","title":{"rendered":"PHP \/ MySQL\u30672038\u5e74\u554f\u984c\u306e\u5bfe\u7b56"},"content":{"rendered":"

\u5148\u65e5\u6253\u3061\u5408\u308f\u305b\u306e\u969b\u306b\u300c\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u3092\u4f7f\u3063\u3066\u30e6\u30cb\u30fc\u30af\u30ad\u30fc\u306b\u4e91\u3005\uff5e\uff5e\u300d\u3068\u3044\u3063\u305f\u3088\u3046\u306a\u5185\u5bb9\u306e\u8a71\u304c\u3042\u304c\u308a\u3001\u305d\u306e\u969b\u306b(\u3042\u308c\u3001\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u3068\u8a00\u3048\u30702038\u5e74\u554f\u984c\u304c\u30cd\u30c3\u30af\u306b\u306a\u308b\u3093\u3058\u3083\u306a\u304b\u3063\u305f\u3063\u3051)\u3068\u601d\u3063\u305f\u3082\u306e\u306e\u30012038\u5e74\u554f\u984c\u306e\u5bfe\u7b56\u306b\u3064\u3044\u3066\u306f\u52c9\u5f37\u3057\u3066\u3044\u306a\u304b\u3063\u305f\u306e\u3067\u305d\u306e\u5834\u306f\u30b9\u30eb\u30fc\u3057\u305f\u3002\u305d\u306e\u307e\u307e\u306b\u3057\u3066\u304a\u304f\u8a33\u306b\u3082\u3044\u304b\u306a\u3044\u306e\u3067PHP \/ MySQL\u3067\u306e2038\u5e74\u554f\u984c\u306e\u5bfe\u7b56\u65b9\u6cd5\u3092\u4ee5\u4e0b\u306b\u30e1\u30e2\u3002<\/p>\n

 <\/p>\n

2038\u5e74\u554f\u984c\u3068\u306f<\/h2>\n

32bit\u7248OS\u3060\u3068\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u306f\u300c2147483647\u300d\u307e\u3067\u3057\u304b\u53d6\u308a\u6271\u3048\u305a\u3001\u6700\u5927\u5024\u3092\u8d85\u3048\u3066\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u3059\u308b\u3068\u8aa4\u52d5\u4f5c\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002\u5c1a\u300164bit\u7248OS\u3060\u3068\u5927\u4e08\u592b<\/a>\u307f\u305f\u3044\u3002<\/p>\n

\u3061\u306a\u307f\u306b32bit\u304b64bit\u304b\u3092\u8abf\u3079\u308b\u306b\u306fSSH\u63a5\u7d9a\u3057\u3066\u4ee5\u4e0b\u30b3\u30de\u30f3\u30c9\u3092\u6253\u3064\u3068\u78ba\u8a8d\u3067\u304d\u308b\u3002<\/p>\n

#\u4ee5\u4e0b\u30b3\u30de\u30f3\u30c9\u3092\u6253\u3064\r\nuname -a\r\n\r\n#\u5f53\u65b9\u306e\u74b0\u5883\u3067\u306f\u4ee5\u4e0b\u304c\u51fa\u529b\u3055\u308c\u305f(64bit\u7248OS)\r\nLinux i-12100000189047 3.10.0-1160.36.2.el7.x86_64 #1 SMP Wed Jul 21 11:57:15 UTC 2021 x86_64 x86_64 x86_64 GNU\/Linux<\/pre>\n
 <\/p>\n
PHP\u3067\u306e\u5bfe\u7b56<\/h2>\n
date\u95a2\u6570\u53ca\u3073strtotime\u95a2\u6570\u306f\u4f7f\u308f\u306a\u3044<\/h3>\n
DateTime\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3002\u3088\u304f\u4f7f\u3044\u305d\u3046\u306a\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3002<\/p>\n
#\u73fe\u5728\u65e5\u6642\u3092\u51fa\u529b\r\n$date = new DateTime();\r\necho $date->format('Y-m-d H:i:s');\r\n\r\n#\u4efb\u610f\u306e\u65e5\u6642\u3092\u51fa\u529b\r\n$date = new DateTime('2023-03-03 14:00:00');\r\necho $date->format('Y-m-d H:i:s');\r\n\r\n#\u4efb\u610f\u306e\u65e5\u6642\u304b\u3089\u3007\u6642\u9593\u3001\u65e5\u3001\u9031\u3001\u6708\u5f8c\u3092\u51fa\u529b\r\n$date = new DateTime('2023-03-03 14:00:00');\r\necho $date->modify('+1 hours')->format('Y-m-d H:i:s');\r\necho $date->modify('+1 days')->format('Y-m-d H:i:s');\r\necho $date->modify('+1 weeks')->format('Y-m-d H:i:s');\r\necho $date->modify('+1 months')->format('Y-m-d H:i:s');<\/pre>\n
 <\/p>\n
MySQL\u3067\u306e\u5bfe\u7b56<\/h2>\n
TIMESTAMP\u578b\u3092\u4f7f\u308f\u306a\u3044<\/h3>\n
DATE\u578b\u3084DATETIME\u578b\u3092\u4f7f\u7528\u3059\u308b\u3002\u307e\u305f\u3001\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u306e\u30c7\u30fc\u30bf\u3092\u683c\u7d0d\u3057\u305f\u3044\u5834\u5408\u306fINT\u578b\u3084BIGINT\u578b\u3092\u4f7f\u7528\u3059\u308b\u3002<\/p>\n
 <\/p>\n
\u6240\u611f<\/h2>\n
PHP\u306edate\u95a2\u6570\u53ca\u3073strtotime\u95a2\u6570\u3092\u3088\u304f\u4f7f\u3063\u3066\u3044\u305f\u306e\u3067\u4eca\u5f8c\u306fDateTime\u30af\u30e9\u30b9\u3092\u4f7f\u3046\u3088\u3046\u306b\u6c17\u3092\u4ed8\u3051\u308b\u3002\u307e\u305f\u3001\u4ed6\u306b\u3082\u5bfe\u7b56\u304c\u5fc5\u8981\u306a\u554f\u984c\u70b9\u304c\u898b\u3064\u304b\u308c\u3070\u8ffd\u8a18\u3059\u308b\u3002<\/p>\n
 <\/p>\n
\u53c2\u8003\u30b5\u30a4\u30c8<\/h2>\n
https:\/\/qiita.com\/re-24\/items\/c3ed814f2e1ee0f8e811<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
\u5148\u65e5\u6253\u3061\u5408\u308f\u305b\u306e\u969b\u306b\u300c\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u3092\u4f7f\u3063\u3066\u30e6\u30cb\u30fc\u30af\u30ad\u30fc\u306b\u4e91\u3005\uff5e\uff5e\u300d\u3068\u3044\u3063\u305f\u3088\u3046 ... <\/p>\n","protected":false},"author":1,"featured_media":1085,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[2,5,66],"tags":[],"class_list":["post-3654","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-php","category-mysql","category-database"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t