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 |
|---|---|
| 2808 | * Passing a non-null value to the filter will short-circuit |
| 2809 | * checking the DB for the charset, returning that value instead. |
| 2810 | * |
| 2811 | * @since 4.2.0 |
| 2812 | * |
| 2813 | * @param string|null $charset The character set to use. Default null. |
| 2814 | * @param string $table The name of the table being checked. |
| 2815 | * @param string $column The name of the column being checked. |
| 2816 | */ |
| 2817 | $charset = apply_filters( 'pre_get_col_charset', null, $table, $column ); |
| 2818 | if ( null !== $charset ) { |
| 2819 | return $charset; |
| 2820 | } |
| 2821 | |
| 2822 | // Skip this entirely if this isn't a MySQL database. |
| 2823 | if ( empty( $this->is_mysql ) ) { |
| 2824 | return false; |
| 2825 | } |
| 2826 | |