How to show NEW post content in post editor?

try wp update post function: // Update post 37 for example $my_post = array( ‘ID’ => 37, ‘post_title’ => ‘This is the post title.’, ‘post_content’ => ‘This is the updated content.’, ); // Update the post into the database wp_update_post( $my_post ); https://codex.wordpress.org/Function_Reference/wp_update_post

Content area is too small

You need to edit your theme’s CSS to do this. In style.css in your 2014 folder on line 1021: .site-content .entry-header, .site-content .entry-content, .site-content .entry-summary, .site-content .entry-meta, .page-content { margin: 0 auto; max-width: 474px; } change 474px to whatever you want your content width to go up to. Or set it to 100% to stay … Read more

replace control character ascii into page

first workaround: Edit the page under wordpress classic editor and copy (ctrl-C) the whole to the clipboard. Open the vim editor Copy (ctrl-V) the clipboard to the vim window Replace all control characters with a space    :%s/[^@-^M]/ /g (ie ctrl-V ctrl- @ and ctrl-V ctrl-M) Overwrite the page content in wordpress with the new … Read more