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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 |
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1788 | } |
1789 |
|
1790 | /** |
1791 | * Filter the dbDelta SQL queries. |
1792 | * |
1793 | * @since 3.3.0 |
1794 | * |
1795 | * @param array $queries An array of dbDelta SQL queries. |
1796 | */ |
1797 | $queries = apply_filters( 'dbdelta_queries', $queries ); |
1798 |
|
1799 | $cqueries = array(); // Creation Queries |
1800 | $iqueries = array(); // Insertion Queries |
1801 | $for_update = array(); |
1802 |
|
1803 | // Create a tablename index for an array ($cqueries) of queries |
1804 | foreach($queries as $qry) { |
1805 | if ( preg_match( "|CREATE TABLE ([^ ]*)|", $qry, $matches ) ) { |
1806 | $cqueries[ trim( $matches[1], '`' ) ] = $qry; |