send as props from file php to vue file

I wanted to send as props from file php (wordpress), in array

File.php $props =[ ‘login-message’ => ‘Message text’, ‘username_placeholder’ => ‘This is a username placeholder’ ] <login-form : props=”< ? php echo json_encode($props) ? >" />

File.vue props: { return { props: this.props } } How can I do this? Thanks