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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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84 | } |
85 |
|
86 | /** |
87 | * Fires after the Multisite DB upgrade for each site is complete. |
88 | * |
89 | * @since MU |
90 | * |
91 | * @param array|WP_Error $response The upgrade response array or WP_Error on failure. |
92 | */ |
93 | do_action( 'after_mu_upgrade', $response ); |
94 | /** |
95 | * Fires after each site has been upgraded. |
96 | * |
97 | * @since MU |
98 | * |
99 | * @param int $blog_id The Site ID. |
100 | */ |
101 | do_action( 'wpmu_upgrade_site', $details[ 'blog_id' ] ); |
102 | } |