Source View: pre_{$field}

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Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

  • Action hooks look like this: do_action( "hook_name" )
  • Filter hooks look like this: apply_filters( "hook_name", "what_to_filter" ).

Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.

Source View

Line Code
1622           }
1623
1624           if ( 'description' == $field )
1625                $value = esc_html( $value ); // textarea_escaped?
1626           else
1627                $value = esc_attr($value);
1628      } elseif ( 'db' == $context ) {
1629           if ( $prefixed ) {
1630                /** This filter is documented in wp-includes/post.php */
1631                $value = apply_filters( "pre_{$field}", $value );
1632           } else {
1633
1634                /**
1635                 * Filter the value of a user field in the 'db' context.
1636                 *
1637                 * The dynamic portion of the hook name, `$field`, refers to the prefixed user
1638                 * field being filtered, such as 'user_login', 'user_email', 'first_name', etc.
1639                  *
1640                 * @since 2.9.0