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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 |
---|---|
1147 | * metadata object type (comment, post, or user) and the meta key value, |
1148 | * respectively. |
1149 | * |
1150 | * @since 3.3.0 |
1151 | * |
1152 | * @param mixed $meta_value Meta value to sanitize. |
1153 | * @param string $meta_key Meta key. |
1154 | * @param string $meta_type Meta type. |
1155 | */ |
1156 | return apply_filters( "sanitize_{$meta_type}_meta_{$meta_key}", $meta_value, $meta_key, $meta_type ); |
1157 | } |
1158 |
|
1159 | /** |
1160 | * Register meta key |
1161 | * |
1162 | * @since 3.3.0 |
1163 | * |
1164 | * @param string $meta_type Type of meta |
1165 | * @param string $meta_key Meta key |