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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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91 | } |
92 |
|
93 | /** |
94 | * Fires after the Multisite DB upgrade for each site is complete. |
95 | * |
96 | * @since MU |
97 | * |
98 | * @param array|WP_Error $response The upgrade response array or WP_Error on failure. |
99 | */ |
100 | do_action( 'after_mu_upgrade', $response ); |
101 | /** |
102 | * Fires after each site has been upgraded. |
103 | * |
104 | * @since MU |
105 | * |
106 | * @param int $site_id The Site ID. |
107 | */ |
108 | do_action( 'wpmu_upgrade_site', $site_id ); |
109 | } |