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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 |
|---|---|
| 972 | function wp_embed_defaults() { |
| 973 | if ( ! empty( $GLOBALS['content_width'] ) ) |
| 974 | $width = (int) $GLOBALS['content_width']; |
| 975 | |
| 976 | if ( empty( $width ) ) |
| 977 | $width = 500; |
| 978 | |
| 979 | $height = min( ceil( $width * 1.5 ), 1000 ); |
| 980 | |
| 981 | return apply_filters( 'embed_defaults', compact( 'width', 'height' ) ); |
| 982 | } |
| 983 | |
| 984 | /** |
| 985 | * Based on a supplied width/height example, return the biggest possible dimensions based on the max width/height. |
| 986 | * |
| 987 | * @since 2.9.0 |
| 988 | * @uses wp_constrain_dimensions() This function passes the widths and the heights. |
| 989 | * |
| 990 | * @param int $example_width The width of an example embed. |