Filters the value of a user field in the 'db' context. The dynamic portion of the hook name, `$field`, refers to the prefixed user field being filtered, such as 'user_login', 'user_email', 'first_name', etc.
$value
Sortie :
@param mixed $value Value of the prefixed user field.
// Modifier la valeur avec le filtre 'pre_user_{$field}'
add_filter('pre_user_{$field}', 'ma_fonction_filtre', 10, 1);
function ma_fonction_filtre($value) {
// Modifier la valeur
return $value;
}
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