{"id":72191,"date":"2026-10-29T19:24:47","date_gmt":"2026-10-29T10:24:47","guid":{"rendered":"https:\/\/kinsta.com\/jp\/?p=72191&#038;preview=true&#038;preview_id=72191"},"modified":"2026-10-29T01:34:43","modified_gmt":"2026-10-28T16:34:43","slug":"the-site-is-experiencing-technical-difficulties","status":"publish","type":"post","link":"https:\/\/kinsta.com\/jp\/blog\/the-site-is-experiencing-technical-difficulties\/","title":{"rendered":"\u300c\u3053\u306e\u30b5\u30a4\u30c8\u3067\u91cd\u5927\u306a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u300dWordPress\u30a8\u30e9\u30fc\u306e\u89e3\u6c7a\u65b9\u6cd5"},"content":{"rendered":"<p data-pm-slice=\"1 1 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alt=\"\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u3067\u8868\u793a\u3055\u308c\u308b\u300c\u3053\u306e\u30b5\u30a4\u30c8\u3067\u91cd\u5927\u306a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u300d\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\" width=\"1500\" height=\"463\"><figcaption id=\"caption-attachment-67103\" class=\"wp-caption-text\">\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u3067\u8868\u793a\u3055\u308c\u308b\u300c\u3053\u306e\u30b5\u30a4\u30c8\u3067\u91cd\u5927\u306a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u300d\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8<\/figcaption><\/figure>\n<p>WordPress\u7ba1\u7406\u753b\u9762\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_67092\" aria-describedby=\"caption-attachment-67092\" style=\"width: 1500px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-67092\" 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href=\"https:\/\/kinsta.com\/jp\/blog\/is-wordpress-free\/\">WordPress\u306f\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2<\/a>\u3067\u3042\u308a\u3001\u3055\u307e\u3056\u307e\u306a\u958b\u767a\u8005\u304c\u72ec\u81ea\u306e\u65b9\u6cd5\u3067\u30d7\u30e9\u30b0\u30a4\u30f3\u3084\u30c6\u30fc\u30de\u3092\u958b\u767a\u30fb\u516c\u958b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u305d\u306e\u305f\u3081\u3001<a 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alt=\"\u300c\u3053\u306e\u30b5\u30a4\u30c8\u3067\u91cd\u5927\u306a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u300d\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3092\u8aac\u660e\u3059\u308b\u30e1\u30fc\u30eb\u4f8b\" width=\"1500\" height=\"1268\"><figcaption id=\"caption-attachment-67098\" class=\"wp-caption-text\">\u300c\u3053\u306e\u30b5\u30a4\u30c8\u3067\u91cd\u5927\u306a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u300d\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3092\u8aac\u660e\u3059\u308b\u30e1\u30fc\u30eb\u4f8b<\/figcaption><\/figure>\n<p>\u3053\u306e\u30e1\u30fc\u30eb\u306b\u306f\u3001\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3092\u3059\u3070\u3084\u304f\u7279\u5b9a\u3059\u308b\u306e\u306b\u5f79\u7acb\u3064\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u60c5\u5831\u304c\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>\n<div>\n<div>\n<p>\u7af6\u5408\u3092\u5f15\u304d\u8d77\u3053\u3057\u3066\u3044\u308b\u30d7\u30e9\u30b0\u30a4\u30f3\u307e\u305f\u306f\u30c6\u30fc\u30de\u306e\u540d\u524d<\/p>\n<\/div>\n<\/div>\n<\/li>\n<li>\n<div>\n<div>\n<p>\u30b5\u30a4\u30c8\u3092<a href=\"https:\/\/make.wordpress.org\/core\/2019\/04\/16\/fatal-error-recovery-mode-in-5-2\/\">\u30ea\u30ab\u30d0\u30ea\u30fc\u30e2\u30fc\u30c9<\/a>\u3067\u8d77\u52d5\u3059\u308b\u305f\u3081\u306e\u30ea\u30f3\u30af<\/p>\n<\/div>\n<\/div>\n<\/li>\n<\/ul>\n<p>\u3053\u308c\u3089\u306e\u60c5\u5831\u304c\u306a\u304f\u3066\u3082\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3092\u8abf\u67fb\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u3059\u304c\u3001\u3069\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u3084\u30c6\u30fc\u30de\u304c\u554f\u984c\u3092\u5f15\u304d\u8d77\u3053\u3057\u3066\u3044\u308b\u306e\u304b\u3001\u4e00\u3064\u305a\u3064\u78ba\u8a8d\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u591a\u6570\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u30b5\u30a4\u30c8\u3067\u306f\u3001\u539f\u56e0\u306e\u7279\u5b9a\u306b\u6642\u9593\u304c\u304b\u304b\u308a\u307e\u3059\u3002<\/p>\n<p>\u30b5\u30a4\u30c8\u306e\u7ba1\u7406\u8005\u3067\u3001\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u300c\u30b5\u30a4\u30c8\u7ba1\u7406\u8005\u306e\u30e1\u30fc\u30eb\u53d7\u4fe1\u30dc\u30c3\u30af\u30b9\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u300d\u3068\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u307e\u305a\u6307\u793a\u901a\u308a\u30e1\u30fc\u30eb\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\uff08\u53d7\u4fe1\u3057\u3066\u3044\u306a\u3051\u308c\u3070\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u3082\u5fd8\u308c\u305a\u306b\u30c1\u30a7\u30c3\u30af\uff09\u3002\u30e1\u30fc\u30eb\u304c\u5c4a\u3044\u3066\u3044\u308c\u3070\u3001\u5f8c\u8ff0\u3059\u308b\u30ea\u30ab\u30d0\u30ea\u30fc\u30e2\u30fc\u30c9\u3067\u306e\u5bfe\u51e6\u624b\u9806\u306b\u9032\u3093\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u30b5\u30a4\u30c8\u7ba1\u7406\u8005\u3067\u306f\u306a\u304f\u3001\u7ba1\u7406\u8005\u306b\u9023\u7d61\u304c\u53d6\u308c\u306a\u3044\u5834\u5408\u3084\u3001\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u30e1\u30fc\u30eb\u306b\u95a2\u3059\u308b\u6848\u5185\u304c\u8868\u793a\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u306f\u3001\u5f8c\u8ff0\u3059\u308bFTP\uff08\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\u30d7\u30ed\u30c8\u30b3\u30eb\uff09\u3092\u4f7f\u7528\u3057\u305f\u624b\u9806\u3092\u304a\u8a66\u3057\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>\u30b9\u30c6\u30c3\u30d72. \u30d7\u30e9\u30b0\u30a4\u30f3\u307e\u305f\u306f\u30c6\u30fc\u30de\u306e\u7af6\u5408\u3092\u89e3\u6c7a\u3059\u308b<\/h3>\n<p>WordPress\u3067\u81f4\u547d\u7684\u306a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u3068\u3001<a href=\"https:\/\/kinsta.com\/blog\/locked-out-of-wordpress-admin\/\">WordPress\u7ba1\u7406\u753b\u9762\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u304f\u306a\u308b<\/a>\u305f\u3081\u3001\u554f\u984c\u306e\u539f\u56e0\u3068\u306a\u3063\u3066\u3044\u308b\u30d7\u30e9\u30b0\u30a4\u30f3\u3084\u30c6\u30fc\u30de\u3092\u901a\u5e38\u306e\u65b9\u6cd5\u3067\u306f\u7121\u52b9\u5316\u3067\u304d\u307e\u305b\u3093\u3002\u3053\u306e\u5834\u5408\u3001\u30ea\u30ab\u30d0\u30ea\u30fc\u30e2\u30fc\u30c9\u306e\u30ea\u30f3\u30af\u3092\u5229\u7528\u3067\u304d\u308b\u304b\u3069\u3046\u304b\u306b\u3088\u3063\u3066\u30012\u3064\u306e\u5bfe\u51e6\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h4>\u30ea\u30ab\u30d0\u30ea\u30fc\u30e2\u30fc\u30c9\u3067\u7af6\u5408\u3092\u89e3\u6d88\u3059\u308b<\/h4>\n<p>\u30ea\u30ab\u30d0\u30ea\u30fc\u30e2\u30fc\u30c9\u306e\u30ea\u30f3\u30af\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u30ea\u30f3\u30af\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002WordPress\u306e\u30ed\u30b0\u30a4\u30f3\u753b\u9762\u304c\u8868\u793a\u3055\u308c\u308b\u306e\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u540d\u3068\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5165\u529b\u3057\u3066\u30ed\u30b0\u30a4\u30f3\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<figure id=\"attachment_72281\" aria-describedby=\"caption-attachment-72281\" style=\"width: 1319px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-72281 size-full\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/10\/wp-admin-recovery-mode.png\" alt=\"\u30ea\u30ab\u30d0\u30ea\u30fc\u30e2\u30fc\u30c9\u306b\u306a\u3063\u305fWordPress\u30ed\u30b0\u30a4\u30f3\u30da\u30fc\u30b8\" width=\"1319\" height=\"803\" srcset=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/10\/wp-admin-recovery-mode.png 1319w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/10\/wp-admin-recovery-mode-300x183.png 300w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/10\/wp-admin-recovery-mode-1024x623.png 1024w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/10\/wp-admin-recovery-mode-768x468.png 768w\" sizes=\"auto, (max-width: 1319px) 100vw, 1319px\" \/><figcaption id=\"caption-attachment-72281\" class=\"wp-caption-text\">\u30ea\u30ab\u30d0\u30ea\u30fc\u30e2\u30fc\u30c9\u306b\u306a\u3063\u305fWordPress\u30ed\u30b0\u30a4\u30f3\u30da\u30fc\u30b8<\/figcaption><\/figure>\n<p>\u306a\u304a\u3001\u7ba1\u7406\u8005\u30a2\u30ab\u30a6\u30f3\u30c8\u3067\u30ed\u30b0\u30a4\u30f3\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30b5\u30a4\u30c8\u7ba1\u7406\u8005\u304c\u5225\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u30ea\u30ab\u30d0\u30ea\u30fc\u30e2\u30fc\u30c9\u306e\u30ea\u30f3\u30af\u3092\u5171\u6709\u3057\u3001\u30a8\u30e9\u30fc\u3078\u306e\u5bfe\u51e6\u3092\u4f9d\u983c\u3059\u308b\u5834\u5408\u3001\u305d\u306e\u30e6\u30fc\u30b6\u30fc\u306f\u81ea\u5206\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\u3067\u30ed\u30b0\u30a4\u30f3\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<p>\u6ce8\u610f\u70b9\u3068\u3057\u3066\u3001\u30ea\u30ab\u30d0\u30ea\u30fc\u30e2\u30fc\u30c9\u3067\u4f5c\u696d\u3057\u3066\u3044\u308b\u9593\u3082\u3001<strong>\u4ed6\u306e\u30e6\u30fc\u30b6\u30fc\u3084\u30b5\u30a4\u30c8\u306e\u8a2a\u554f\u8005\u306b\u306f\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u307e\u3059<\/strong>\u3002\u901a\u5e38\u3069\u304a\u308a\u30b5\u30a4\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u306e\u306f\u3001\u30ea\u30ab\u30d0\u30ea\u30fc\u30e2\u30fc\u30c9\u306e\u30ea\u30f3\u30af\u304b\u3089\u30ed\u30b0\u30a4\u30f3\u3057\u305f\u30e6\u30fc\u30b6\u30fc\u306e\u307f\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u30ea\u30ab\u30d0\u30ea\u30fc\u30e2\u30fc\u30c9\u3067\u306f\u3001WordPress\u304c\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3068\u5224\u65ad\u3057\u305f\u30d7\u30e9\u30b0\u30a4\u30f3\u3084\u30c6\u30fc\u30de\u304c\u4e00\u6642\u505c\u6b62\u3055\u308c\u307e\u3059\u3002\u307e\u305f\u3001\u753b\u9762\u4e0a\u90e8\u306b\u8868\u793a\u3055\u308c\u308b\u901a\u77e5\u30d0\u30ca\u30fc\u3067\u3001\u554f\u984c\u306e\u3042\u308b\u30d7\u30e9\u30b0\u30a4\u30f3\u3084\u30c6\u30fc\u30de\u3092\u78ba\u8a8d\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<p>\u901a\u77e5\u5185\u306e\u300c<strong>\u30d7\u30e9\u30b0\u30a4\u30f3<\/strong>\u300d\u753b\u9762\u3078\u306e\u30ea\u30f3\u30af\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u3001\u7af6\u5408\u306e\u539f\u56e0\u3068\u306a\u3063\u3066\u3044\u308b\u30d7\u30e9\u30b0\u30a4\u30f3\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_67109\" aria-describedby=\"caption-attachment-67109\" style=\"width: 1500px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-67109\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2020\/02\/wordpress-recovery-mode-1.png\" alt=\"WordPress\u306e\u30ea\u30ab\u30d0\u30ea\u30fc\u30e2\u30fc\u30c9\" width=\"1500\" height=\"677\"><figcaption id=\"caption-attachment-67109\" class=\"wp-caption-text\">WordPress\u306e\u30ea\u30ab\u30d0\u30ea\u30fc\u30e2\u30fc\u30c9<\/figcaption><\/figure>\n<p>\u554f\u984c\u306e\u3042\u308b\u30d7\u30e9\u30b0\u30a4\u30f3\u3084\u30c6\u30fc\u30de\u306e\u540d\u524d\u306e\u4e0b\u306b\u3042\u308b\u300c<strong>\u7121\u52b9\u5316<\/strong>\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_67101\" aria-describedby=\"caption-attachment-67101\" style=\"width: 1500px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-67101\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2020\/02\/recovery-mode-plugins-1.png\" alt=\"\u30ea\u30ab\u30d0\u30ea\u30fc\u30e2\u30fc\u30c9\u3067\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u7121\u52b9\u5316\" width=\"1500\" height=\"680\"><figcaption id=\"caption-attachment-67101\" class=\"wp-caption-text\">\u30ea\u30ab\u30d0\u30ea\u30fc\u30e2\u30fc\u30c9\u3067\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u7121\u52b9\u5316<\/figcaption><\/figure>\n<p>\u7d9a\u3044\u3066\u3001\u4e0a\u90e8\u7ba1\u7406\u30d0\u30fc\u306e\u300c<strong>\u30ea\u30ab\u30d0\u30ea\u30fc\u30e2\u30fc\u30c9\u3092\u7d42\u4e86<\/strong>\u300d\u3092\u9078\u629e\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_67105\" aria-describedby=\"caption-attachment-67105\" style=\"width: 1500px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-67105\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2020\/02\/exit-recovery-mode-1.png\" alt=\"\u30ea\u30ab\u30d0\u30ea\u30fc\u30e2\u30fc\u30c9\u3092\u7d42\u4e86\" width=\"1500\" height=\"663\"><figcaption id=\"caption-attachment-67105\" class=\"wp-caption-text\">\u30ea\u30ab\u30d0\u30ea\u30fc\u30e2\u30fc\u30c9\u3092\u7d42\u4e86<\/figcaption><\/figure>\n<p>\u3053\u308c\u3067\u554f\u984c\u306e\u3042\u308b\u30d7\u30e9\u30b0\u30a4\u30f3\u3084\u30c6\u30fc\u30de\u304c\u3059\u3079\u3066\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u5bfe\u3057\u3066\u7121\u52b9\u5316\u3055\u308c\u3001\u30b5\u30a4\u30c8\u306b\u518d\u3073\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u306f\u305a\u3067\u3059\u3002\u307e\u305a\u306f\u3001\u30b5\u30a4\u30c8\u304c\u6b63\u5e38\u306b\u8868\u793a\u3055\u308c\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3001\u305d\u306e\u5f8c\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u4ee5\u4e0b\u306e\u5bfe\u5fdc\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>\n<div>\n<div>\n<p>\u30b5\u30a4\u30c8\u306e\u4e3b\u8981\u306a\u6a5f\u80fd\u306b\u5f71\u97ff\u3057\u306a\u3044\u30d7\u30e9\u30b0\u30a4\u30f3\u3084\u30c6\u30fc\u30de\u3067\u3042\u308c\u3070\u524a\u9664\u3059\u308b<\/p>\n<\/div>\n<\/div>\n<\/li>\n<li>\n<div>\n<div>\n<p><a href=\"https:\/\/kinsta.com\/jp\/blog\/uninstall-wordpress-plugin\/\">\u7af6\u5408\u3057\u3066\u3044\u308b\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u30a2\u30f3\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/a>\u3059\u308b\u304b\u3001<a 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href=\"https:\/\/kinsta.com\/jp\/blog\/php-versions\/\">\u30b5\u30dd\u30fc\u30c8\u5bfe\u8c61\u306e\u30d0\u30fc\u30b8\u30e7\u30f3<\/a>\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002WordPress\u516c\u5f0f\u3067\u306f\u73fe\u5728\u3001PHP 8.3\u4ee5\u4e0a\u306e\u4f7f\u7528\u3092\u63a8\u5968\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p data-pm-slice=\"1 1 []\">\u307e\u305f\u3001PHP\u306e\u958b\u767a\u5143\u306b\u3088\u308b\u30b5\u30dd\u30fc\u30c8\u304c\u7d99\u7d9a\u3057\u3066\u3044\u308b\u306e\u306f\u3001\u30d0\u30fc\u30b8\u30e7\u30f38.2\u4ee5\u964d\u306e\u307f\u3067\u3059\u3002PHP 8.2\u306b\u3064\u3044\u3066\u3082\u30012026\u5e7412\u670831\u65e5\u306b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b5\u30dd\u30fc\u30c8\u304c\u7d42\u4e86\u3059\u308b\u4e88\u5b9a\u3067\u3059\u3002<\/p>\n<p>\u4f7f\u7528\u4e2d\u306ePHP\u30d0\u30fc\u30b8\u30e7\u30f3\u306f\u901a\u5e38\u3001\u5229\u7528\u3057\u3066\u3044\u308b\u30b5\u30fc\u30d0\u30fc\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d1\u30cd\u30eb\u3067\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002Kinsta\u3092\u3054\u5229\u7528\u306e\u5834\u5408\u306f\u3001<a href=\"https:\/\/kinsta.com\/jp\/mykinsta\/\">MyKinsta<\/a>\u306b\u30ed\u30b0\u30a4\u30f3\u3057\u3001\u300c<strong>\u30b5\u30a4\u30c8<\/strong>\u300d\u753b\u9762\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<figure id=\"attachment_72282\" aria-describedby=\"caption-attachment-72282\" style=\"width: 1083px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-72282 size-full\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/10\/mykinsta-sites-php-versions.png\" alt=\"MyKinsta\u306e\u30b5\u30a4\u30c8\u753b\u9762\u3067\u5404\u74b0\u5883\u306ePHP\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u78ba\u8a8d\u53ef\u80fd\" width=\"1083\" height=\"463\" srcset=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/10\/mykinsta-sites-php-versions.png 1083w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/10\/mykinsta-sites-php-versions-300x128.png 300w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/10\/mykinsta-sites-php-versions-1024x438.png 1024w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/10\/mykinsta-sites-php-versions-768x328.png 768w\" sizes=\"auto, (max-width: 1083px) 100vw, 1083px\" \/><figcaption id=\"caption-attachment-72282\" class=\"wp-caption-text\">MyKinsta\u306e\u30b5\u30a4\u30c8\u753b\u9762\u3067\u5404\u74b0\u5883\u306ePHP\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u78ba\u8a8d\u53ef\u80fd<\/figcaption><\/figure>\n<p>\u53e4\u3044\u30d0\u30fc\u30b8\u30e7\u30f3\u306ePHP\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u30d0\u30fc\u30b8\u30e7\u30f3\u30a2\u30c3\u30d7\u3092\u884c\u3063\u3066\u304f\u3060\u3055\u3044\u3002<a href=\"https:\/\/kinsta.com\/jp\/blog\/how-to-update-php-in-wordpress\/\">PHP\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u5909\u66f4\u624b\u9806<\/a>\u306f\u3001\u5229\u7528\u3057\u3066\u3044\u308b\u30b5\u30fc\u30d0\u30fc\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>Kinsta\u3092\u3054\u5229\u7528\u306e\u5834\u5408\u306f\u3001MyKinsta\u3067\u300c<strong>\u30b5\u30a4\u30c8<\/strong>\u300d\uff1e\uff08<strong>\u30b5\u30a4\u30c8\u540d<\/strong>\uff09\uff1e\u300c<strong>\u30c4\u30fc\u30eb<\/strong>\u300d\u306b\u79fb\u52d5\u3057\u3001\u300c<strong>PHP\u8a2d\u5b9a<\/strong>\u300d\u30bb\u30af\u30b7\u30e7\u30f3\u306e\u300c<strong>\u5909\u66f4<\/strong>\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<figure id=\"attachment_72283\" aria-describedby=\"caption-attachment-72283\" style=\"width: 1089px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-72283 size-full\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/10\/mykinsta-change-php-version.png\" alt=\"PHP\u8a2d\u5b9a\u306e\u300c\u5909\u66f4\u3059\u308b\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u5909\u66f4\" width=\"1089\" height=\"574\" srcset=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/10\/mykinsta-change-php-version.png 1089w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/10\/mykinsta-change-php-version-300x158.png 300w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/10\/mykinsta-change-php-version-1024x540.png 1024w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/10\/mykinsta-change-php-version-768x405.png 768w\" sizes=\"auto, (max-width: 1089px) 100vw, 1089px\" \/><figcaption id=\"caption-attachment-72283\" class=\"wp-caption-text\">PHP\u8a2d\u5b9a\u306e\u300c\u5909\u66f4\u3059\u308b\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u5909\u66f4<\/figcaption><\/figure>\n<p>\u7d9a\u3044\u3066\u3001\u30b5\u30a4\u30c8\u3067\u4f7f\u7528\u3059\u308bPHP\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u9078\u629e\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_72284\" aria-describedby=\"caption-attachment-72284\" style=\"width: 753px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-72284 size-full\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/10\/mykinsta-choose-php-version.png\" alt=\"\u30b5\u30a4\u30c8\u306b\u9069\u3057\u305fPHP\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u9078\u629e\" width=\"753\" height=\"405\" srcset=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/10\/mykinsta-choose-php-version.png 753w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/10\/mykinsta-choose-php-version-300x161.png 300w\" sizes=\"auto, (max-width: 753px) 100vw, 753px\" \/><figcaption id=\"caption-attachment-72284\" class=\"wp-caption-text\">\u30b5\u30a4\u30c8\u306b\u9069\u3057\u305fPHP\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u9078\u629e<\/figcaption><\/figure>\n<p>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u89b3\u70b9\u304b\u3089\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/php-7-4\/\">\u5229\u7528\u53ef\u80fd\u306a\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u306ePHP<\/a>\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\u3002\u66f4\u65b0\u304c\u5b8c\u4e86\u3057\u305f\u3089\u3001\u30b5\u30a4\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3066\u81f4\u547d\u7684\u306a\u30a8\u30e9\u30fc\u304c\u89e3\u6d88\u3055\u308c\u305f\u304b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>\u30b9\u30c6\u30c3\u30d74. WordPress\u306e\u30c7\u30d0\u30c3\u30b0\u30e2\u30fc\u30c9\u3092\u6709\u52b9\u306b\u3059\u308b<\/h3>\n<p>\u300c\u3053\u306e\u30b5\u30a4\u30c8\u3067\u91cd\u5927\u306a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u300d\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u6d88\u3048\u306a\u3044\u5834\u5408\u306f\u3001<a href=\"https:\/\/kinsta.com\/jp\/docs\/wordpress-hosting\/wordpress-troubleshooting\/wordpress-debugging\/#enable-wp-debug\">WordPress\u306e\u30c7\u30d0\u30c3\u30b0\u30e2\u30fc\u30c9<\/a>\u3092\u4f7f\u7528\u3057\u3066\u539f\u56e0\u3092\u8abf\u67fb\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u30c7\u30d0\u30c3\u30b0\u30e2\u30fc\u30c9\u306fWordPress\u306b\u6a19\u6e96\u642d\u8f09\u3055\u308c\u3066\u3044\u308b\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u6a5f\u80fd\u3067\u3001\u901a\u5e38\u306f\u8868\u793a\u3055\u308c\u306a\u3044PHP\u30a8\u30e9\u30fc\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u30c7\u30d0\u30c3\u30b0\u30e2\u30fc\u30c9\u3092\u6709\u52b9\u306b\u3059\u308b\u306b\u306f\u3001FTP\u7d4c\u7531\u3067\u300cwp-config.php\u300d\u30d5\u30a1\u30a4\u30eb\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3001\u300cThat&#8217;s all, stop editing! Happy publishing.\u300d\u3068\u3044\u3046\u884c\u306e\u76f4\u524d\u306b\u3001\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-php\">define( 'WP_DEBUG', true );<\/code><\/pre>\n<p>\u30d5\u30a1\u30a4\u30eb\u3092\u4fdd\u5b58\u3057\u3066\u30b5\u30fc\u30d0\u30fc\u306b\u518d\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3057\u305f\u3089\u3001\u30b5\u30a4\u30c8\u306b\u623b\u3063\u3066\u30da\u30fc\u30b8\u3092\u518d\u8aad\u307f\u8fbc\u307f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30c7\u30d0\u30c3\u30b0\u30e2\u30fc\u30c9\u3067\u8868\u793a\u3055\u308c\u308b\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u78ba\u8a8d\u3057\u3001\u81f4\u547d\u7684\u306a\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3068\u306a\u3063\u3066\u3044\u308b\u3082\u306e\u304c\u306a\u3044\u304b\u8abf\u3079\u307e\u3059\u3002\u539f\u56e0\u3092\u7279\u5b9a\u3067\u304d\u305f\u3089\u3001\u305d\u306e\u30a8\u30e9\u30fc\u306b\u5fdc\u3058\u305f\u5bfe\u51e6\u3092\u884c\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u306a\u304a\u3001\u30c7\u30d0\u30c3\u30b0\u30e2\u30fc\u30c9\u306f\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u969b\u306b\u306e\u307f\u4f7f\u7528\u3057\u3001\u4f5c\u696d\u304c\u7d42\u308f\u3063\u305f\u3089\u5fc5\u305a\u7121\u52b9\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u6709\u52b9\u306b\u3057\u305f\u307e\u307e\u306b\u3059\u308b\u3068\u3001\u6a5f\u5bc6\u60c5\u5831\u304c\u30b5\u30a4\u30c8\u306e\u8a2a\u554f\u8005\u306b\u8868\u793a\u3055\u308c\u308b\u304a\u305d\u308c\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u30c7\u30d0\u30c3\u30b0\u30e2\u30fc\u30c9\u3092\u7121\u52b9\u306b\u3059\u308b\u306b\u306f\u3001\u300cwp-config.php\u300d\u30d5\u30a1\u30a4\u30eb\u306b\u8ffd\u52a0\u3057\u305f\u30b3\u30fc\u30c9\u306e\u300ctrue\u300d\u3092\u300cfalse\u300d\u306b\u5909\u66f4\u3057\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u30d5\u30a1\u30a4\u30eb\u3092\u4fdd\u5b58\u3057\u3066\u30b5\u30fc\u30d0\u30fc\u306b\u518d\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>\u30b9\u30c6\u30c3\u30d75. \u30b5\u30fc\u30d0\u30fc\u306e\u30a8\u30e9\u30fc\u30ed\u30b0\u3092\u78ba\u8a8d\u3059\u308b<\/h3>\n<p>\u30c7\u30d0\u30c3\u30b0\u30e2\u30fc\u30c9\u3067\u539f\u56e0\u3068\u306a\u308a\u305d\u3046\u306a\u30a8\u30e9\u30fc\u304c\u898b\u3064\u304b\u3089\u306a\u3044\u5834\u5408\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u30a8\u30e9\u30fc\u30ed\u30b0\u3082\u78ba\u8a8d\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u901a\u5e38\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/wordpress-error-log\/\">\u30a8\u30e9\u30fc\u30ed\u30b0\u306f\u30b5\u30fc\u30d0\u30fc\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d1\u30cd\u30eb\u304b\u3089\u78ba\u8a8d<\/a>\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>Kinsta\u3092\u3054\u5229\u7528\u306e\u5834\u5408\u306f\u3001MyKinsta\u306e\u300c<strong>\u30b5\u30a4\u30c8<\/strong>\u300d\uff1e\uff08<strong>\u30b5\u30a4\u30c8\u540d<\/strong>\uff09\uff1e\u300c<strong>\u30ed\u30b0<\/strong>\u300d\u306b\u79fb\u52d5\u3057\u3001\u300c<strong>error.log<\/strong>\u300d\u30bf\u30d6\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_70819\" aria-describedby=\"caption-attachment-70819\" style=\"width: 1076px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-70819 size-full\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/08\/mykinsta-log-viewer.png\" 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class=\"wp-caption-text\">MyKinsta\u3067error.log\u30d5\u30a1\u30a4\u30eb\u3092\u8868\u793a<\/figcaption><\/figure>\n<p>\u30ed\u30b0\u306e\u5185\u5bb9\u3092\u78ba\u8a8d\u3057\u3001\u300c\u3053\u306e\u30b5\u30a4\u30c8\u3067\u91cd\u5927\u306a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u300d\u3068\u3044\u3046\u30a8\u30e9\u30fc\u306b\u3064\u306a\u304c\u308b\u554f\u984c\u304c\u8a18\u9332\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u8abf\u3079\u307e\u3059\u3002\u539f\u56e0\u304c\u898b\u3064\u304b\u3063\u305f\u5834\u5408\u306f\u3001\u305d\u306e\u554f\u984c\u306b\u5fdc\u3058\u305f\u5bfe\u51e6\u3092\u884c\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>\u30b9\u30c6\u30c3\u30d76. 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