{"id":1434,"date":"2019-05-20T21:28:26","date_gmt":"2019-05-20T12:28:26","guid":{"rendered":"https:\/\/katblog.manadream.net\/?p=1434"},"modified":"2019-10-09T15:09:17","modified_gmt":"2019-10-09T06:09:17","slug":"php-int-max","status":"publish","type":"post","link":"https:\/\/katblog.manadream.net\/index.php\/2019\/05\/20\/php-int-max\/","title":{"rendered":"\u3010PHP\u3011int\u578b\u306bcast\u3059\u308b\u969b\u306f\u4e0a\u9650\u5024\u306b\u6ce8\u610f\u3057\u3088\u3046\uff01"},"content":{"rendered":"<p>\u3069\u3046\u3082\u3001kat\u3067\u3059\u3002<\/p>\n<p>\u4eca\u56de\u306f\u3001PHP\u306e<span style=\"color: #0000ff;\"><strong>\u578b<\/strong><\/span>\u306b\u3064\u3044\u3066\u306e\u304a\u8a71\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>PHP\u3067\u306f\u3001(int)\u306a\u3069\u3092\u5909\u6570\u306e\u524d\u306b\u3064\u3051\u308b\u3053\u3068\u3067\u3001\u5909\u6570\u306e\u578b\u3092cast\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u516c\u5f0f\u306b\u8a18\u8f09\u306ecast\u306e\u7a2e\u985e\u306f\u4ee5\u4e0b\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<div class=\"simple-box4\">\n<ul class=\"itemizedlist\">\n<li class=\"listitem\"><span class=\"simpara\">(int), (integer) &#8211; \u6574\u6570\u3078\u306e\u30ad\u30e3\u30b9\u30c8<\/span><\/li>\n<li class=\"listitem\"><span class=\"simpara\">(bool), (boolean) &#8211; \u8ad6\u7406\u5024\u3078\u306e\u30ad\u30e3\u30b9\u30c8<\/span><\/li>\n<li class=\"listitem\"><span class=\"simpara\">(float), (double), (real) &#8211; float \u3078\u306e\u30ad\u30e3\u30b9\u30c8<\/span><\/li>\n<li class=\"listitem\"><span class=\"simpara\">(string) &#8211; \u6587\u5b57\u5217\u3078\u306e\u30ad\u30e3\u30b9\u30c8<\/span><\/li>\n<li class=\"listitem\"><span class=\"simpara\">(array) &#8211; \u914d\u5217\u3078\u306e\u30ad\u30e3\u30b9\u30c8<\/span><\/li>\n<li class=\"listitem\"><span class=\"simpara\">(object) &#8211; \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3078\u306e\u30ad\u30e3\u30b9\u30c8<\/span><\/li>\n<li class=\"listitem\"><span class=\"simpara\">(unset) &#8211; <span class=\"type\"><a class=\"type NULL\" href=\"https:\/\/www.php.net\/manual\/ja\/language.types.null.php\">NULL<\/a><\/span> \u3078\u306e\u30ad\u30e3\u30b9\u30c8 (PHP 5)<\/span><\/li>\n<\/ul>\n<\/div>\n<p>\u4eca\u56de\u306f\u3001\u3053\u306e\u4e2d\u3067\u3001<strong>\u6574\u6570\u3078\u306ecast<\/strong>\u306b\u3064\u3044\u3066\u66f8\u3044\u3066\u3044\u3053\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n<h2 class=\"wp-block-heading\">int\u578b\u306b\u306f\u4e0a\u9650\u5024\u304c\u3042\u308b<\/h2>\n\n\n<p>\u65e9\u901f\u3001\u7d50\u8ad6\u306b\u306a\u308a\u307e\u3059\u304c\u3001int, integer\u3078cast\u306b\u306f\u3001<strong>\u4e0a\u9650\u5024\u304c\u5b58\u5728\u3057\u307e\u3059<\/strong>\u3002<\/p>\n<p>\u5177\u4f53\u7684\u306b\u306f\u3001PHP_INT_MAX\u3068\u3044\u3046\u5b9a\u6570\u3067\u4e0a\u9650\u5024\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: php; title: ; notranslate\" title=\"\">\nvar_dump(PHP_INT_MAX);\n<\/pre><\/div>\n\n<p>\u306a\u3069\u3068\u3059\u308b\u3068\u3001\u4e0a\u9650\u5024\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u5024\u306f\u3001\u74b0\u5883\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u5177\u4f53\u7684\u306b\u306f<\/p>\n\n<div class=\"simple-box4\">\n<ul>\n<li>\u30b7\u30b9\u30c6\u30e0\u306ebit\u6570\uff0832 or 64bit\uff09<\/li>\n<li>PHP\u306e\u30d0\u30fc\u30b8\u30e7\u30f3<\/li>\n<\/ul>\n<\/div>\n\n<p>\u306b\u3088\u3063\u3066\u3001MAX\u5024\u304c\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u57fa\u672c\u7684\u306b\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u304c<strong>32bit<\/strong>\u306e\u5834\u5408\u306f\u3001<strong>2147483647<\/strong>\u3001<strong>64bit<\/strong>\u306e\u5834\u5408\u306f<strong>9223372036854775807<\/strong>\u304c\u4e0a\u9650\u5024\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u4f8b\u5916\u3068\u3057\u3066\u3001<strong>Windows\u306e\u5834\u5408\u306f\u3001PHP\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u304c7\u4ee5\u524d\u306e\u5834\u5408\u306f\u300132bit\u3068\u540c\u30582147483647\u304c\u9069\u7528\u3055\u308c\u308b<\/strong>\u307f\u305f\u3044\u3067\u3059\u3002\uff086.5\u3067\u78ba\u8a8d\u6e08\uff09<\/p>\n\n\n<h2 class=\"wp-block-heading\">float\u3078\u306e\u81ea\u52d5cast\u306b\u6ce8\u610f\uff01<\/h2>\n\n\n<p>int\u578b\u306e<strong>\u4e0a\u9650\u5024\u3092\u8d85\u3048\u305f\u5834\u5408\u3001\u81ea\u52d5\u7684\u306bfloat\u578b\u306bcast\u3055\u308c<\/strong>\u307e\u3059\u304c\u3001float\u578b\u306b\u3064\u3044\u3066\u306f\u3001<span style=\"color: #ff0000;\"><strong>PHP\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u3088\u3063\u3066\u3001cast\u306e\u3055\u308c\u65b9\u304c\u7570\u306a\u308a\u307e\u3059\u306e\u3067\u3001\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059<\/strong><\/span>\u3002<\/p>\n\n\n<p>\u4f8b\u3048\u3070\u3001<\/p>\n\n\n<div class=\"simple-box4\">\n<p><span style=\"color: #0000ff;\"><strong>PHP_INT_MAX + 1025<\/strong><\/span><\/p>\n<p>\u3068\u3001<\/p>\n<p><strong><span style=\"color: #0000ff;\">PHP_INT_MAX<\/span><\/strong><\/p>\n<\/div>\n\n<p>\u304c\u7b49\u3057\u3044\u3068\u5224\u65ad\u3055\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\uff08PHP7\u3067\u5b9f\u8a3c\u3002PHP6.5\u3067\u306f\u518d\u73fe\u305b\u305a\uff09<\/p>\n<p>\u306a\u306e\u3067\u3001<strong>\u6841\u6570\u306e\u591a\u3044\u5024\u3092\u5b89\u6613\u306b\u6bd4\u8f03\u3059\u308b\u306e\u306f\u30ea\u30b9\u30af\u304c\u9ad8\u3044<\/strong>\u3068\u8a00\u3048\u307e\u3059\u3002<\/p>\n<p>\u3060\u304b\u3089\u3068\u8a00\u3063\u3066\u3001\u6bd4\u8f03\u3059\u308b\u969b\u306b\u3001<\/p>\n<p>(int)$num1 == (int)$num2<\/p>\n<p>\u306e\u3088\u3046\u306b\u3001<strong>(int)\u3067cast\u3057\u305f\u3068\u3057\u3066\u3082\u3001PHP_INT_MAX\u3092\u8d85\u3048\u308b\u5024\u304c\u5165\u3063\u3066\u304d\u305f\u5834\u5408\u306b\u3001\u6b63\u3057\u304fcast\u3055\u308c\u305a\u3001\u304a\u304b\u3057\u306a\u6bd4\u8f03\u7d50\u679c\u3068\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059<\/strong>\u3002<\/p>\n\n\n<h2 class=\"wp-block-heading\">\u5bfe\u51e6\u65b9\u6cd5<\/h2>\n\n\n<p>\u305d\u3082\u305d\u3082\u3001<span style=\"color: #0000ff;\"><strong>PHP_INT_MAX\u3092\u8d85\u3048\u308b\u3088\u3046\u306a\u5927\u304d\u306a\u5024\u3092\u4fdd\u6301\u3057\u306a\u3044\u3088\u3046\u306b\u8a2d\u8a08\u3059\u308b\u3053\u3068\u304c\u7b2c\u4e00<\/strong><\/span>\u3067\u3059\u3002<\/p>\n<p>\u3068\u306f\u8a00\u3048\u3001\u305d\u3046\u3082\u3044\u304b\u306a\u3044\u5834\u5408\u3082\u3042\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u306e\u3067\u3001\u5927\u304d\u3044\u6570\u5024\u3092\u6271\u3046\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306b\u6c17\u3092\u3064\u3051\u3066\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3067\u3001\u554f\u984c\u306a\u304f\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n<div class=\"simple-box4\">\n<p>\u30fb<strong>\u672c\u756a\u30b5\u30fc\u30d0\u30fc\u306f\u3001PHP7\u3082\u3057\u304f\u306f\u3001Windows\u4ee5\u5916\u306e\u30b5\u30fc\u30d0\u30fc\u304b\u306464bit\u3068\u3059\u308b\u3053\u3068<\/strong><\/p>\n<p>\u30fb<strong>\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3067\u3001\u5165\u529b\u5024\u309218\u6841\u307e\u3067\u3068\u3059\u308b<\/strong>\uff08\u3082\u3063\u3068\u5c11\u306a\u304f\u3066\u3082\u554f\u984c\u306a\u3044\u3067\u3059\uff09<\/p>\n<\/div>\n<p>\u3069\u3046\u3057\u3066\u3082\u4e0a\u8a18\u306e\u6761\u4ef6\u3092\u30af\u30ea\u30a2\u3067\u304d\u306a\u3044\u3068\u3044\u3046\u3053\u3068\u3067\u3057\u305f\u3089\u3001\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3067<strong>9\u6841<\/strong>\u307e\u3067\u3068\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n<h2 class=\"wp-block-heading\">\u6700\u5f8c\u306b<\/h2>\n\n\n<p>\u3044\u304b\u304c\u3060\u3063\u305f\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p>int\u3084float\u5468\u308a\u306f\u3001\u74b0\u5883\u3084\u3001<strong>PHP\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u3088\u3063\u3066\u6319\u52d5\u304c\u5909\u308f\u308b<\/strong>\u90e8\u5206\u3067\u3082\u3042\u308a\u3001<span style=\"color: #ff0000;\"><strong>\u3088\u304f\u77e5\u3089\u305a\u306b\u5b9f\u88c5\u3057\u3066\u3057\u307e\u3046\u3068\u3001\u74b0\u5883\u306b\u3088\u3063\u3066\u6319\u52d5\u304c\u304a\u304b\u3057\u3044\u306a\u3069\u3001\u30d0\u30b0\u306e\u539f\u56e0\u306b\u306a\u308a\u304b\u306d\u307e\u305b\u3093<\/strong><\/span>\u306e\u3067\u3001\u6c17\u3092\u3064\u3051\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u4ee5\u4e0a\u3001\u300cPHP\u306eint\u578b\u306bcast\u3059\u308b\u969b\u306f\u4e0a\u9650\u5024\u306b\u6ce8\u610f\u3057\u3088\u3046\uff01\u300d\u3067\u3057\u305f\u301c\u3002<\/p>","protected":false},"excerpt":{"rendered":"<p>\u3069\u3046\u3082\u3001kat\u3067\u3059\u3002 \u4eca\u56de\u306f\u3001PHP\u306e\u578b\u306b\u3064\u3044\u3066\u306e\u304a\u8a71\u306b\u306a\u308a\u307e\u3059\u3002 PHP\u3067\u306f\u3001(int)\u306a\u3069\u3092\u5909\u6570\u306e\u524d\u306b\u3064\u3051\u308b\u3053\u3068\u3067\u3001\u5909\u6570\u306e\u578b\u3092cast\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u516c\u5f0f\u306b\u8a18\u8f09\u306ecast\u306e\u7a2e\u985e\u306f\u4ee5\u4e0b\u306b\u306a\u308a\u307e\u3059\u3002 (int), <\/p>\n","protected":false},"author":1,"featured_media":1464,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_locale":"","_original_post":"","_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"categories":[25,2],"tags":[32,36],"class_list":["post-1434","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-php","category-programing","tag-it","tag-php","ja"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/katblog.manadream.net\/wp-content\/uploads\/2019\/05\/php.jpg","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paUgnN-n8","_links":{"self":[{"href":"https:\/\/katblog.manadream.net\/index.php\/wp-json\/wp\/v2\/posts\/1434"}],"collection":[{"href":"https:\/\/katblog.manadream.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/katblog.manadream.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/katblog.manadream.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/katblog.manadream.net\/index.php\/wp-json\/wp\/v2\/comments?post=1434"}],"version-history":[{"count":31,"href":"https:\/\/katblog.manadream.net\/index.php\/wp-json\/wp\/v2\/posts\/1434\/revisions"}],"predecessor-version":[{"id":2566,"href":"https:\/\/katblog.manadream.net\/index.php\/wp-json\/wp\/v2\/posts\/1434\/revisions\/2566"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/katblog.manadream.net\/index.php\/wp-json\/wp\/v2\/media\/1464"}],"wp:attachment":[{"href":"https:\/\/katblog.manadream.net\/index.php\/wp-json\/wp\/v2\/media?parent=1434"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/katblog.manadream.net\/index.php\/wp-json\/wp\/v2\/categories?post=1434"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/katblog.manadream.net\/index.php\/wp-json\/wp\/v2\/tags?post=1434"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}