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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 |
|---|---|
| 180 | * @return mixed WP_User object if authentication passed, false otherwise |
| 181 | */ |
| 182 | function login( $username, $password ) { |
| 183 | /* |
| 184 | * Respect old get_option() filters left for back-compat when the 'enable_xmlrpc' |
| 185 | * option was deprecated in 3.5.0. Use the 'xmlrpc_enabled' hook instead. |
| 186 | */ |
| 187 | $enabled = apply_filters( 'pre_option_enable_xmlrpc', false ); |
| 188 | if ( false === $enabled ) { |
| 189 | $enabled = apply_filters( 'option_enable_xmlrpc', true ); |
| 190 | } |
| 191 | |
| 192 | /** |
| 193 | * Filter whether XML-RPC is enabled. |
| 194 | * |
| 195 | * This is the proper filter for turning off XML-RPC. |
| 196 | * |
| 197 | * @since 3.5.0 |
| 198 | * |