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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 |
|---|---|
| 169 | * |
| 170 | * @since 1.5.0 As 'option_' . $setting |
| 171 | * @since 3.0.0 |
| 172 | * @since 4.4.0 The `$option` parameter was added. |
| 173 | * |
| 174 | * @param mixed $value Value of the option. If stored serialized, it will be |
| 175 | * unserialized prior to being returned. |
| 176 | * @param string $option Option name. |
| 177 | */ |
| 178 | return apply_filters( "option_{$option}", maybe_unserialize( $value ), $option ); |
| 179 | } |
| 180 | |
| 181 | /** |
| 182 | * Protects WordPress special option from being modified. |
| 183 | * |
| 184 | * Will die if $option is in protected list. Protected options are 'alloptions' |
| 185 | * and 'notoptions' options. |
| 186 | * |
| 187 | * @since 2.2.0 |