metadata_exists [ WordPress Function ]
metadata_exists ( $meta_type, $object_id, $meta_key )
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| Returns: |
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| Defined at: |
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Determine if a meta key is set for a given object
Source
<?php
function metadata_exists( $meta_type, $object_id, $meta_key ) {
if ( ! $meta_type )
return false;
if ( ! $object_id = absint( $object_id ) )
return false;
$check = apply_filters( "get_{$meta_type}_metadata", null, $object_id, $meta_key, true );
if ( null !== $check )
return true;
$meta_cache = wp_cache_get( $object_id, $meta_type . '_meta' );
if ( !$meta_cache ) {
$meta_cache = update_meta_cache( $meta_type, array( $object_id ) );
$meta_cache = $meta_cache[$object_id];
}
if ( isset( $meta_cache[ $meta_key ] ) )
return true;
return false;
}
?>
Examples [ wp-snippets.com ]
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Determine if a meta key is set for a given object. Signature. metadata_exists( $ meta_type, $object_id, $meta_key ). meta_type: (string) Type of object metadata is ...
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