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
1203           }
1204
1205           if ( 'description' == $field )
1206                $value = esc_html( $value ); // textarea_escaped?
1207           else
1208                $value = esc_attr($value);
1209      } elseif ( 'db' == $context ) {
1210           if ( $prefixed ) {
1211                /** This filter is documented in wp-includes/post.php */
1212                $value = apply_filters( "pre_{$field}", $value );
1213           } else {
1214
1215                /**
1216                 * Filters the value of a user field in the 'db' context.
1217                 *
1218                 * The dynamic portion of the hook name, `$field`, refers to the prefixed user
1219                 * field being filtered, such as 'user_login', 'user_email', 'first_name', etc.
1220                  *
1221                 * @since 2.9.0