Title: Plugin Custom Field Value Sanitization
Last modified: August 19, 2016

---

# Plugin Custom Field Value Sanitization

 *  [toneburst](https://wordpress.org/support/users/toneburst/)
 * (@toneburst)
 * [15 years, 4 months ago](https://wordpress.org/support/topic/plugin-custom-field-value-sanitization/)
 * Hi guys,
 * quick query from a plugin newbie.
 * I’m writing a plugin that adds a meta box to the Post Edit Dashboard panel. The
   meta box provides a number of checkboxes. When the post is saved, the value of
   these checkboxes are saved as a simple string in a custom field of the saved 
   post.
 * The next time the post is opened in the Edit Post panel, the plugin checks for
   the custom field, and sets checkboxes as necessary.
 * I’m using nonces and authorization checking as outlined here
    [http://codex.wordpress.org/Function_Reference/add_meta_box](http://codex.wordpress.org/Function_Reference/add_meta_box)
   before the string is written to the post’s meta.
 * I’m also using the leading underscore trick to prevent the custom field and its
   value being visible in the Post Edit panel (though any values entered manually
   here would anyway be replaced by values from the form in the new meta box at 
   post save time).
 * In this scenario, is there still a need to sanitize the custom field value before
   saving it to the post meta or when reading back from the meta?
 * a|x

Viewing 1 replies (of 1 total)

 *  Thread Starter [toneburst](https://wordpress.org/support/users/toneburst/)
 * (@toneburst)
 * [15 years, 4 months ago](https://wordpress.org/support/topic/plugin-custom-field-value-sanitization/#post-1882155)
 * Anyone?
 * a|x

Viewing 1 replies (of 1 total)

The topic ‘Plugin Custom Field Value Sanitization’ is closed to new replies.

 * 1 reply
 * 1 participant
 * Last reply from: [toneburst](https://wordpress.org/support/users/toneburst/)
 * Last activity: [15 years, 4 months ago](https://wordpress.org/support/topic/plugin-custom-field-value-sanitization/#post-1882155)
 * Status: not resolved

## Topics

### Topics with no replies

### Non-support topics

### Resolved topics

### Unresolved topics

### All topics