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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 |
---|---|
902 | * |
903 | * @since 3.1.3 |
904 | * |
905 | * @param string $meta_key Meta key |
906 | * @param mixed $meta_value Meta value to sanitize |
907 | * @param string $meta_type Type of meta |
908 | * @return mixed Sanitized $meta_value |
909 | */ |
910 | function sanitize_meta( $meta_key, $meta_value, $meta_type ) { |
911 | return apply_filters( "sanitize_{$meta_type}_meta_{$meta_key}", $meta_value, $meta_key, $meta_type ); |
912 | } |
913 |
|
914 | /** |
915 | * Register meta key |
916 | * |
917 | * @since 3.3.0 |
918 | * |
919 | * @param string $meta_type Type of meta |
920 | * @param string $meta_key Meta key |