Filters the sanitization of a specific meta key of a specific meta type and subtype. The dynamic portions of the hook name, `$object_type`, `$meta_key`, and `$object_subtype`, refer to the metadata object type (comment, post, term, or user), the meta key value, and the object subtype respectively.

Parameters

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( 4.9.8 ) . .

( mixed ) $meta_value Metadata value to sanitize. . . .

$meta_key

( string ) Metadata key. . . .

$object_type

( string ) Type of object metadata is for. Accepts ‘post’, ‘comment’, ‘term’, ‘user’, or any other object type with an associated meta table. . . .

$object_subtype

( string ) Object subtype. . . .