{"id":40,"date":"2012-07-20T09:43:41","date_gmt":"2012-07-20T07:43:41","guid":{"rendered":"http:\/\/www2.emiwa.pl\/?p=40"},"modified":"2025-06-04T09:44:53","modified_gmt":"2025-06-04T07:44:53","slug":"blad-warning-cannot-modify-header-information-po-przeniesieniu-strony","status":"publish","type":"post","link":"https:\/\/www.emiwa.pl\/?p=40","title":{"rendered":"B\u0142\u0105d: „Warning: Cannot modify header information …” po przeniesieniu strony."},"content":{"rendered":"

Ostatnio musia\u0142em przenie\u015b\u0107 pewna stron\u0119 z jednego serwera na drugi. I jakie\u017c by\u0142o moje zaskoczenie kiedy na nowym serwerze strona przywita\u0142a mnie pi\u0119knym komunikatem:<\/p>\n

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Warning: Cannot modify header information - headers already sent by (output started at \/configure\/lang.php:1) in \/client\/p.php on line 530<\/pre>\n<\/blockquote>\n
No przecie\u017c nie mo\u017cliwe \u017ceby powodem by\u0142 troch\u0119 inaczej skonfigurowany serwer. Pogrzeba\u0142em w necie i okazuje si\u0119, \u017ce po za oczywistymi b\u0142\u0119dami pope\u0142nianymi podczas pisania kodu strony b\u0142\u0105d taki mo\u017ce zosta\u0107 r\u00f3wnie\u017c z powodu sposobu kodowania pliku kiedy korzystamy z UTF-8. Poniewa\u017c b\u0142\u0105d programisty przy przenoszeniu strony raczej nie wchodzi\u0142 w gr\u0119 pozosta\u0142 problem z kodowaniem. Kt\u00f3ry to dok\u0142adnie plik wiadomo bo wskazuje go komunikat ostrze\u017cenia w moim wypadku to lang.php. Plik wystarczy\u0142o wyedytowa\u0107 np. w programie Notepad+++ i zapisa\u0107 ponownie zmieniaj\u0105c wcze\u015bniej w menu format kodowania na \u201eKoduj w UTF-8 (bez BOM)\u201d oraz upewniaj\u0105c si\u0119, \u017ce na pocz\u0105tku pliku nie mamy jaki\u015b \u015bmieci.<\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[47,62],"class_list":["post-40","post","type-post","status-publish","format-standard","hentry","category-newbie","tag-html","tag-www"],"_links":{"self":[{"href":"https:\/\/www.emiwa.pl\/index.php?rest_route=\/wp\/v2\/posts\/40","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.emiwa.pl\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.emiwa.pl\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.emiwa.pl\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.emiwa.pl\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=40"}],"version-history":[{"count":2,"href":"https:\/\/www.emiwa.pl\/index.php?rest_route=\/wp\/v2\/posts\/40\/revisions"}],"predecessor-version":[{"id":115,"href":"https:\/\/www.emiwa.pl\/index.php?rest_route=\/wp\/v2\/posts\/40\/revisions\/115"}],"wp:attachment":[{"href":"https:\/\/www.emiwa.pl\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=40"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emiwa.pl\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=40"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emiwa.pl\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=40"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}