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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 |
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78 | function get_default_feed() { |
79 | /** |
80 | * Filter the default feed type. |
81 | * |
82 | * @since 2.5.0 |
83 | * |
84 | * @param string $feed_type Type of default feed. Possible values include 'rss2', 'atom'. |
85 | * Default 'rss2'. |
86 | */ |
87 | $default_feed = apply_filters( 'default_feed', 'rss2' ); |
88 | return 'rss' == $default_feed ? 'rss2' : $default_feed; |
89 | } |
90 |
|
91 | /** |
92 | * Retrieve the blog title for the feed title. |
93 | * |
94 | * @since 2.2.0 |
95 | * |
96 | * @param string $sep Optional. How to separate the title. See wp_title() for more info. |