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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 |
|---|---|
| 1700 | /** |
| 1701 | * Filters list of allowed CSS attributes. |
| 1702 | * |
| 1703 | * @since 2.8.1 |
| 1704 | * @since 4.4.0 Added support for `min-height`, `max-height`, `min-width`, and `max-width`. |
| 1705 | * @since 4.6.0 Added support for `list-style-type`. |
| 1706 | * |
| 1707 | * @param array $attr List of allowed CSS attributes. |
| 1708 | */ |
| 1709 | $allowed_attr = apply_filters( 'safe_style_css', array( |
| 1710 | 'background', |
| 1711 | 'background-color', |
| 1712 | |
| 1713 | 'border', |
| 1714 | 'border-width', |
| 1715 | 'border-color', |
| 1716 | 'border-style', |
| 1717 | 'border-right', |
| 1718 | 'border-right-color', |