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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 |
|---|---|
| 2046 | } |
| 2047 | |
| 2048 | /** |
| 2049 | * Filter the dbDelta SQL queries. |
| 2050 | * |
| 2051 | * @since 3.3.0 |
| 2052 | * |
| 2053 | * @param array $queries An array of dbDelta SQL queries. |
| 2054 | */ |
| 2055 | $queries = apply_filters( 'dbdelta_queries', $queries ); |
| 2056 | |
| 2057 | $cqueries = array(); // Creation Queries |
| 2058 | $iqueries = array(); // Insertion Queries |
| 2059 | $for_update = array(); |
| 2060 | |
| 2061 | // Create a tablename index for an array ($cqueries) of queries |
| 2062 | foreach ($queries as $qry) { |
| 2063 | if ( preg_match( "|CREATE TABLE ([^ ]*)|", $qry, $matches ) ) { |
| 2064 | $cqueries[ trim( $matches[1], '`' ) ] = $qry; |