How to customize checkout field?

Thank you for your support.
I enabled debugging and found why the screen was white. I was writing the function twice
that’s why it became white.
So I rewrote the code like this..

// Hook in
add_filter( ‘woocommerce_checkout_fields’ , ‘custom_override_checkout_fields’ );

// Our hooked in function – $fields is passed via the filter!
function custom_override_checkout_fields( $fields ) {
$fields[‘shipping’][‘shipping_address_1’][‘placeholder’] = ‘test’;
$fields[‘shipping’][‘shipping_hotel’] = array(
‘label’ => __(‘Hotel’, ‘woocommerce’),
‘placeholder’ => _x(‘Hotel name’, ‘placeholder’, ‘woocommerce’),
‘required’ => false,
‘class’ => array(‘form-row-wide’),
‘clear’ => true
);

return $fields;
}

It’s not white anymore but still doesn’t change any field which I override..
Do you have any idea?

Hi Caleb, thank you for your advice. I followed your advice and tried everything like disabling all plugins and switching to a default theme…. Those didn’t change the situation but today I could customize the field finally somehow…. I don’t know why though.

Anyways, now I could customize the field except ‘required’ for ‘shipping_address_1’.
I want to change it to optional, but it is not allowed to do it?

My snippet is like this.

// Hook in Customize checkout fields
add_filter( ‘woocommerce_checkout_fields’ , ‘custom_override_checkout_fields’ );

// Our hooked in function – $fields is passed via the filter!
function custom_override_checkout_fields( $fields ) {
$fields[‘shipping’][‘shipping_address_1’][‘placeholder’] = ‘Hotel address’;
$fields[‘shipping’][‘shipping_address_1’][‘label’] = ‘Address (Please put the address if there is no name on the list.)’;
$fields[‘shipping’][‘shipping_address_1’][‘required’] = false;
$fields[‘shipping’][‘shipping_address_2’][‘placeholder’] = ‘Room No.’;
unset($fields[‘shipping’][‘shipping_company’]);
unset($fields[‘billing’][‘billing_company’]);
return $fields;
}