WP hooks navigation: Home/browse • Actions index • Filters index
To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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 |
|---|---|
| 3261 | * Passing a non-null value to the filter will short-circuit |
| 3262 | * checking the DB for the charset, returning that value instead. |
| 3263 | * |
| 3264 | * @since 4.2.0 |
| 3265 | * |
| 3266 | * @param string|null $charset The character set to use. Default null. |
| 3267 | * @param string $table The name of the table being checked. |
| 3268 | * @param string $column The name of the column being checked. |
| 3269 | */ |
| 3270 | $charset = apply_filters( 'pre_get_col_charset', null, $table, $column ); |
| 3271 | if ( null !== $charset ) { |
| 3272 | return $charset; |
| 3273 | } |
| 3274 | |
| 3275 | // Skip this entirely if this isn't a MySQL database. |
| 3276 | if ( empty( $this->is_mysql ) ) { |
| 3277 | return false; |
| 3278 | } |
| 3279 | |