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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 |
|---|---|
| 1889 | * |
| 1890 | * The dynamic portion of the hook name, `$transient`, refers to the transient name. |
| 1891 | * |
| 1892 | * @since 2.9.0 |
| 1893 | * @since 4.4.0 The `$transient` parameter was added. |
| 1894 | * |
| 1895 | * @param mixed $value Value of site transient. |
| 1896 | * @param string $transient Transient name. |
| 1897 | */ |
| 1898 | return apply_filters( "site_transient_{$transient}", $value, $transient ); |
| 1899 | } |
| 1900 | |
| 1901 | /** |
| 1902 | * Sets/updates the value of a site transient. |
| 1903 | * |
| 1904 | * You do not need to serialize values. If the value needs to be serialized, |
| 1905 | * then it will be serialized before it is set. |
| 1906 | * |
| 1907 | * @since 2.9.0 |