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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 |
---|---|
4079 | // Private posts |
4080 | if ($post_type == 'post') { |
4081 | $cap = 'read_private_posts'; |
4082 | // Private pages |
4083 | } elseif ($post_type == 'page') { |
4084 | $cap = 'read_private_pages'; |
4085 | // Dunno what it is, maybe plugins have their own post type? |
4086 | } else { |
4087 | $cap = ''; |
4088 | $cap = apply_filters('pub_priv_sql_capability', $cap); |
4089 |
|
4090 | if (empty($cap)) { |
4091 | // We don't know what it is, filters don't change anything, |
4092 | // so set the SQL up to return nothing. |
4093 | return ' 1 = 0 '; |
4094 | } |
4095 | } |
4096 |
|
4097 | if ($full) { |