{"id":12,"date":"2007-08-28T22:55:17","date_gmt":"2007-08-28T20:55:17","guid":{"rendered":"http:\/\/www.christian-pansch.de\/blog\/utf-8-und-start_session-12\/"},"modified":"2007-10-12T09:59:55","modified_gmt":"2007-10-12T07:59:55","slug":"utf-8-und-start_session","status":"publish","type":"post","link":"https:\/\/www.christian-pansch.de\/blog\/utf-8-und-start_session-12\/","title":{"rendered":"UTF-8 und start_session();"},"content":{"rendered":"<p>Keine brandaktuelle Neuentdeckung, aber vielleicht noch nicht jedem Webentwickler bekannt: bei <strong>UTF-8<\/strong> codierten PHP\/HTML-Seiten und der Verwendung von Sessions kann unter Umst\u00e4nden eine PHP-Fehlermeldung bei dem Aufruf von start_session(); geschmissen werden.<\/p>\n<blockquote><p>Warning: Cannot send session cache limiter &#8211; headers already sent (output<br \/>\nstarted at <em>hier kommt die betreffende Datei<\/em><\/p><\/blockquote>\n<p>Allgemein muss start_session(); immer ganz zu Anfang des PHP-Skripts aufgerufen werden, um die Session zu starten. Es d\u00fcrfen keine Zeichen oder Zeilen vor dem Befehl auftauchen! Das wurde bereits ber\u00fccksichtigt und die Fehlermeldung taucht immer noch auf?<\/p>\n<p>Das <strong><a href=\"http:\/\/de.wikipedia.org\/wiki\/Byte_Order_Mark\">Byte Order Mark <\/a>von UTF-8<\/strong> wird als Zeichenkette interpretiert und ist verantwortlich f\u00fcr das Problem. Wird die UTF-8 codierte Seite mit einem geeigneten Editor ohne BOM gespeichert, sollte es keine Probleme mehr mit Sessions bzw. start_session(); und UTF-8 geben. Ein guter Open Source Editor, der UTF-8 ohne BOM schreiben kann, ist <a href=\"http:\/\/notepad-plus.sourceforge.net\/de\/site.htm\">Notepad++<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Keine brandaktuelle Neuentdeckung, aber vielleicht noch nicht jedem Webentwickler bekannt: bei UTF-8 codierten PHP\/HTML-Seiten und der Verwendung von Sessions kann unter Umst\u00e4nden eine PHP-Fehlermeldung bei dem Aufruf von start_session(); geschmissen werden. Warning: Cannot send session cache limiter &#8211; headers already sent (output started at hier kommt die betreffende Datei Allgemein muss start_session(); immer ganz zu [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,9],"tags":[],"class_list":["post-12","post","type-post","status-publish","format-standard","hentry","category-php","category-web-development"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>UTF-8 und start_session(); - Social Media . 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