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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 |
---|---|
1820 | * |
1821 | * The dynamic portion of the hook name, `$transient`, refers to the transient name. |
1822 | * |
1823 | * @since 3.0.0 |
1824 | * @since 4.4.0 The `$transient` parameter was added. |
1825 | * |
1826 | * @param mixed $value New value of site transient. |
1827 | * @param string $transient Transient name. |
1828 | */ |
1829 | $value = apply_filters( "pre_set_site_transient_{$transient}", $value, $transient ); |
1830 |
|
1831 | $expiration = (int) $expiration; |
1832 |
|
1833 | /** |
1834 | * Filters the expiration for a site transient before its value is set. |
1835 | * |
1836 | * The dynamic portion of the hook name, `$transient`, refers to the transient name. |
1837 | * |
1838 | * @since 4.4.0 |