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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 |
|---|---|
| 3892 | if ( |
| 3893 | function_exists( 'date_create' ) && |
| 3894 | function_exists( 'date_default_timezone_set' ) && |
| 3895 | function_exists( 'timezone_identifiers_list' ) && |
| 3896 | function_exists( 'timezone_open' ) && |
| 3897 | function_exists( 'timezone_offset_get' ) |
| 3898 | ) { |
| 3899 | $support = true; |
| 3900 | } |
| 3901 | return apply_filters( 'timezone_support', $support ); |
| 3902 | } |
| 3903 | |
| 3904 | /** |
| 3905 | * {@internal Missing Short Description}} |
| 3906 | * |
| 3907 | * @since 2.9.0 |
| 3908 | * |
| 3909 | * @param unknown_type $a |
| 3910 | * @param unknown_type $b |