validate_file_to_edit
Makes sure that the file that was requested to be edited is allowed to be edited.
wp_edit_theme_plugin_file
Attempts to edit a file for a theme or plugin.
wp_tempnam
Returns a filename of a temporary unique file.
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wp_print_file_editor_templates
Prints file editor templates (for plugins and themes).
wp_theme_editor_filetypes
Filters the list of file types allowed for editing in the theme editor.
wp_get_theme_file_editable_extensions
Gets the list of file extensions that are editable for a given theme.
editable_extensions
Filters the list of file types allowed for editing in the plugin editor.
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wp_get_plugin_file_editable_extensions
Gets the list of file extensions that are editable in plugins.
list_files
Returns a listing of all files in the specified folder and all subdirectories up to 100 levels deep.
get_home_path
Gets the absolute filesystem path to the root of the WordPress installation.
get_file_description
Gets the description for standard WordPress theme files.