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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 |
|---|---|
| 664 | * @uses do_action() Calls 'delete_transient_$transient' hook before transient is deleted. |
| 665 | * @uses do_action() Calls 'deleted_transient' hook on success. |
| 666 | * |
| 667 | * @param string $transient Transient name. Expected to not be SQL-escaped. |
| 668 | * @return bool true if successful, false otherwise |
| 669 | */ |
| 670 | function delete_transient( $transient ) { |
| 671 | global $_wp_using_ext_object_cache; |
| 672 | |
| 673 | do_action( 'delete_transient_' . $transient, $transient ); |
| 674 | |
| 675 | if ( $_wp_using_ext_object_cache ) { |
| 676 | $result = wp_cache_delete( $transient, 'transient' ); |
| 677 | } else { |
| 678 | $option_timeout = '_transient_timeout_' . $transient; |
| 679 | $option = '_transient_' . $transient; |
| 680 | $result = delete_option( $option ); |
| 681 | if ( $result ) |
| 682 | delete_option( $option_timeout ); |