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
1448           }
1449
1450           if ( 'description' == $field )
1451                $value = esc_html( $value ); // textarea_escaped?
1452           else
1453                $value = esc_attr($value);
1454      } else if ( 'db' == $context ) {
1455           if ( $prefixed ) {
1456                /** This filter is documented in wp-includes/post.php */
1457                $value = apply_filters( "pre_{$field}", $value );
1458           } else {
1459
1460                /**
1461                 * Filter the value of a user field in the 'db' context.
1462                 *
1463                 * The dynamic portion of the hook name, $field, refers to the prefixed user
1464                 * field being filtered, such as 'user_login', 'user_email', 'first_name', etc.
1465                  *
1466                 * @since 2.9.0