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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 |
---|---|
127 | /** |
128 | * Fires before the page loads on the 'Your Profile' editing screen. |
129 | * |
130 | * The action only fires if the current user is editing their own profile. |
131 | * |
132 | * @since 2.0.0 |
133 | * |
134 | * @param int $user_id The user ID. |
135 | */ |
136 | do_action( 'personal_options_update', $user_id ); |
137 | } else { |
138 | /** |
139 | * Fires before the page loads on the 'Edit User' screen. |
140 | * |
141 | * @since 2.7.0 |
142 | * |
143 | * @param int $user_id The user ID. |
144 | */ |
145 | do_action( 'edit_user_profile_update', $user_id ); |