Notice: Undefined index & Warning: Cannot modify header information

Select contents from post.php

Starting with line 185

// Check if the revisions have been upgraded
		if ( $revisions && _wp_get_post_revision_version( $revision ) < 1 )
			_wp_upgrade_revisions_of_post( $post, wp_get_post_revisions( $post_ID ) );
	}

	$post_data = _wp_translate_postdata( true, $post_data );
	if ( is_wp_error($post_data) )
		wp_die( $post_data->get_error_message() );
	if ( ( empty( $post_data['action'] ) || 'autosave' != $post_data['action'] ) && 'auto-draft' == $post_data['post_status'] ) {
		$post_data['post_status'] = 'draft';
	}

	if ( isset($post_data['visibility']) ) {
		switch ( $post_data['visibility'] ) {
			case 'public' :
				$post_data['post_password'] = '';
				break;
			case 'password' :
				unset( $post_data['sticky'] );
				break;
			case 'private' :
				$post_data['post_status'] = 'private';
				$post_data['post_password'] = '';
				unset( $post_data['sticky'] );
				break;
		}
	}

Line 206 says $post_data['post_status'] = 'private';

————————————————–

Select code from pluggable.php starting at line 878

/**
	 * Filter the redirect status code.
	 *
	 * @since 2.3.0
	 *
	 * @param int    $status   Status code to use.
	 * @param string $location The path to redirect to.
	 */
	$status = apply_filters( 'wp_redirect_status', $status, $location );

	if ( ! $location )
		return false;

	$location = wp_sanitize_redirect($location);

	if ( !$is_IIS && php_sapi_name() != 'cgi-fcgi' )
		status_header($status); // This causes problems on IIS and some FastCGI setups

	header("Location: $location", true, $status);

	return true;
}
endif;

if ( !function_exists('wp_sanitize_redirect') ) :

Line 896 says header("Location: $location", true, $status);

Links

https://www.hunterthinks.com/?attachment_id=249

https://www.hunterthinks.com/wp-content/uploads/2014/04/Latina_19.jpg

Try re-uploading all files & folders – except the root wp-config.php & .htaccess files and the wp-content folder – from a fresh download of WordPress. Make sure that you delete the old copies of files & folder before uploading the new ones.

Thank you.

I will delete:

1. /wp-admin/
2. /wp-includes/
3. index.php
4. license.txt
5. missing.html
6. readme.html
7. wp-activate.php
8. wp-blog-header.php
9. wp-comments-post.php
10. wp-config-sample.php
11. wp-content
12. wp-cron.php
13. wp-links-opml.php
14. wp-load.php
15. wp-login.php
16. wp-mail.php
17. wp-settings.php
18. wp-signup.php
19. wp-trackback.php
20. xmlrpc.php

I will also delete these files that are unnecessary

1. .FormMail.conf
2. webformmailer.php
3. php.ini
4. robots.txt

The first three are some sort of webmail feature provided by GoDaddy. I never use them. My robots.txt only has three lines.

I will not delete:

1. index.html
2. favicon.ico

Because this is an active website.

I will not delete:

1. /wp-content/
2. .htaccess
3. wp-config.php

Contents of .htaccess if it matters (I could probably clean out a few old things)

DirectoryIndex index.php index.html
<IfModule mod_mime.c>
	AddCharset UTF-8 .htm .html .php
</IfModule>
<IfModule mod_expires.c>
	<IfModule mod_headers.c>
# includes subdirectories
		ExpiresActive on
		ExpiresDefault "access plus 7 days"
# Media
		<FilesMatch "\.(avi|doc|flv|gif|ico|jpeg|jpg|mov|mp3|pdf|png|ppt|swf|wav|wmv)$">
			ExpiresDefault "access plus 1 year"
		</FilesMatch>
# Markup
		<FilesMatch "\.(css|js)$">
			ExpiresDefault "access plus 1 day"
		</FilesMatch>
# Content
		<FilesMatch "\.(htm|html|txt|xml)$">
			ExpiresDefault "access plus 1 day"
		</FilesMatch>
# Index pages
		<FilesMatch "index\.html$">
			ExpiresDefault "access plus 10 minutes"
		</FilesMatch>
# Dynamic
		<FilesMatch "\.(cgi|php|pl)$">
			ExpiresActive Off
			Header set Cache-Control "private, no-cache, no-store, proxy-revalidate, no-transform"
			Header set Pragma "no-cache"
		</FilesMatch>
	</IfModule>
</IfModule>
AddOutputFilterByType DEFLATE text/text text/html text/plain text/xml text/css application/x-javascript application/javascript image/x-icon
Redirect permanent /blogger/2004...uides.html /blogger/2004/12/study-guides.html
Redirect permanent /solo/redirect/about_truly_news.html /2008/09/about-truly-news.html
Redirect permanent /solo/redirect/about_hunter_hogan.html /blogger/2008/09/about-hunter-hogan.html
Redirect permanent /studyguide/index.html /blogger/2004/12/study-guides.html
Redirect permanent /studyguide/Ethics/index.html /blogger/2004/12/excelsior-college-ethics-exam-study.html
Redirect permanent /studyguide/ethics/index.html /blogger/2004/12/excelsior-college-ethics-exam-study.html
Redirect permanent /studyguide/Ethics/Excelsior_College_Ethics_Exam_Study_Guide.doc /blogger/2004/12/excelsior-college-ethics-exam-study.html
Redirect permanent /studyguide/ethics/Excelsior_College_Ethics_Exam_Study_Guide.doc /blogger/2004/12/excelsior-college-ethics-exam-study.html
Redirect permanent /studyguide/gre/index.html /blogger/2004/11/computer-science-gre-study-guide-home.html
Redirect permanent /studyguide/gre/Computer_Science_GRE_Study_Guide.doc /blogger/2004/11/computer-science-gre-study-guide-home.html
Redirect permanent /studyguide/gre/Computer_Science_GRE_Study_Guide.doc. /blogger/2004/11/computer-science-gre-study-guide-home.html
Redirect permanent /studyguide/gre/Computer_Science_GRE_Study_Guide.htm /blogger/2004/11/computer-science-gre-study-guide-home.html
Redirect permanent /studyguide/gre/studyguide.htm /blogger/2004/11/computer-science-gre-study-guide-home.html
Redirect permanent /web/IA/index.html /web/
Redirect permanent /politics/attitudes/index.html /politics/
Redirect permanent /politics/history/index.html /politics/
Redirect permanent /politics/iraq/index.html /politics/
Redirect permanent /politics/policies/index.html /politics/
Options +FollowSymLinks
RewriteEngine on
RewriteCond %{HTTP_HOST} ^hunterthinks.com [NC]
RewriteRule ^(.*)$ https://www.hunterthinks.com/$1 [R=301]
RewriteCond \.(asp)$ [NC]
RewriteRule / [R=301,L]
RewriteRule ^blogger/200\d_\d\d_\d\d_archive.html /blogger/ [R=301,L]

# BEGIN WPSuperCache
# END WPSuperCache

# BEGIN W3TC Browser Cache
<IfModule mod_deflate.c>
    <IfModule mod_headers.c>
        Header append Vary User-Agent env=!dont-vary
    </IfModule>
        AddOutputFilterByType DEFLATE text/css text/x-component application/x-javascript application/javascript text/javascript text/x-js text/html text/richtext image/svg+xml text/plain text/xsd text/xsl text/xml image/x-icon application/json
    <IfModule mod_mime.c>
        # DEFLATE by extension
        AddOutputFilter DEFLATE js css htm html xml
    </IfModule>
</IfModule>
# END W3TC Browser Cache
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

1. I deleted all of the above files (even missing.html though it was not necessary)
2. I download 3.8.2 to my local computer and unzipped it
3. I am uploading all of the files except to /wp-content/ directory

I live in Cairo, and upload speeds are measured in nanobits per hour, so I try to report back later.

Done uploading. I did not make any changes to any file. Followed the above steps to reproduce the problem. The exact same error, including line numbers. I tried updating the file twice and had the same results.

Upload a new photograph using upload media drag and drop. Click Edit. Add only the word “Caption” to the caption. Click update. Same error. The change was preserved. https://www.hunterthinks.com/?attachment_id=251

*sigh*
In wp-config.php, I changed define('WP_DEBUG', true); back to define('WP_DEBUG', false);.

Error message is gone. I don’t know if that means the actual problems are gone, but the errors are gone.

I still don’t understand what happened, and I don’t know if I should be worried about migrating to WordPress. If I were a drinker, then I would call it a day and drink alcohol now.

Try checking your site’s error logs for messages. Your hosts should be able to help you accessing your site’s error logs.