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_wp_filter_build_unique_id is private and should not be used in themes or plugins directly.
_wp_filter_build_unique_id › WordPress Function
Since2.2.3
Deprecatedn/a
› _wp_filter_build_unique_id ( $hook_name, $callback, $priority )
Access: |
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Parameters: (3) |
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Returns: |
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Defined at: |
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Builds a unique string ID for a hook callback function.
Functions and static method callbacks are just returned as strings and shouldn't have any speed penalty.Source
function _wp_filter_build_unique_id( $hook_name, $callback, $priority ) {
if ( is_string( $callback ) ) {
return $callback;
}
if ( is_object( $callback ) ) {
// Closures are currently implemented as objects.
$callback = array( $callback, '' );
} else {
$callback = (array) $callback;
}
if ( is_object( $callback[0] ) ) {
// Object class calling.
return spl_object_hash( $callback[0] ) . $callback[1];
} elseif ( is_string( $callback[0] ) ) {
// Static calling.
return $callback[0] . '::' . $callback[1];
}
}