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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 |
|---|---|
| 395 | * @subpackage Transient |
| 396 | * |
| 397 | * @uses do_action() Calls 'delete_transient_$transient' hook before transient is deleted. |
| 398 | * @uses do_action() Calls 'deleted_transient' hook on success. |
| 399 | * |
| 400 | * @param string $transient Transient name. Expected to not be SQL-escaped. |
| 401 | * @return bool true if successful, false otherwise |
| 402 | */ |
| 403 | function delete_transient( $transient ) { |
| 404 | do_action( 'delete_transient_' . $transient, $transient ); |
| 405 | |
| 406 | if ( wp_using_ext_object_cache() ) { |
| 407 | $result = wp_cache_delete( $transient, 'transient' ); |
| 408 | } else { |
| 409 | $option_timeout = '_transient_timeout_' . $transient; |
| 410 | $option = '_transient_' . $transient; |
| 411 | $result = delete_option( $option ); |
| 412 | if ( $result ) |
| 413 | delete_option( $option_timeout ); |