wp_send_json_error()
Function: Sends a JSON response back to an Ajax request, indicating failure.
Source: wp-includes/functions.php:4505
wp_check_jsonp_callback()
Function: Checks that a JSONP callback is a valid JavaScript callback name.
Source: wp-includes/functions.php:4541
_ajax_wp_die_handler()
Function: Kills WordPress execution and displays Ajax response with an error message.
Source: wp-includes/functions.php:3973
wp_check_filetype()
Function: Retrieves the file type from the file name.
Source: wp-includes/functions.php:3027
getimagesize_mimes_to_exts
Filter Hook: Filters the list mapping image mime types to their respective extensions.
Source: wp-includes/functions.php:3100
wp_check_filetype_and_ext()
Function: Attempts to determine the real file type of a file.
Source: wp-includes/functions.php:3071
wp_check_filetype_and_ext
Filter Hook: Filters the “real” file type of the given file.
Source: wp-includes/functions.php:3258
wp_get_image_mime()
Function: Returns the real mime type of an image file.
Source: wp-includes/functions.php:3273
mime_types
Filter Hook: Filters the list of mime types and file extensions.
Source: wp-includes/functions.php:3372
wp_get_mime_types()
Function: Retrieves the list of mime types and file extensions.
Source: wp-includes/functions.php:3360