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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )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.
| Line | Code |
|---|---|
| 1619 | |
| 1620 | if ( 'description' === $field ) { |
| 1621 | $value = esc_html( $value ); // textarea_escaped? |
| 1622 | } else { |
| 1623 | $value = esc_attr( $value ); |
| 1624 | } |
| 1625 | } elseif ( 'db' === $context ) { |
| 1626 | if ( $prefixed ) { |
| 1627 | /** This filter is documented in wp-includes/post.php */ |
| 1628 | $value = apply_filters( "pre_{$field}", $value ); |
| 1629 | } else { |
| 1630 | |
| 1631 | /** |
| 1632 | * Filters the value of a user field in the 'db' context. |
| 1633 | * |
| 1634 | * The dynamic portion of the hook name, `$field`, refers to the prefixed user |
| 1635 | * field being filtered, such as 'user_login', 'user_email', 'first_name', etc. |
| 1636 | * |
| 1637 | * @since 2.9.0 |