Campos de ciudad y agencia

checkout.php

<?php

function custom_city_field( $city_fields ) {
    
    //Obtiene el estado seleccionado
    $estado_actual = WC()->customer->get_shipping_state();
    /* De requerirse esta devuelve la ciudad
    $agency = WC()->customer->get_shipping_city();*/
    
    //Se generan los array que contienen los datos a mostrar en los select box
    $estado['DC'] = array(
        'CARACAS' => array(
            'ZOOM C.C. GALERIAS EL PARAISO',
            'ZOOM TAQUILLA DIA DIA UNICENTRO EL MARQUES',
            'ZOOM TAQUILLA MAKRO LA YAGUARA' 
            )
    );
    $estado['LA'] = array(
        'BARQUSIMETO' => array(
            'ZOOM BARQUISIMETO',
            'ZOOM AEROPUERTO JACINTO LARA',
            'ALIADO ZOOM EXIMCOM 101, C.A'
            ),
        'CABUDARE' => array(
            'ZOOM CABUDARE'
            ),
        'CARORA' => array(
            'ZOOM CARORA'
            ),
        'EL TOCUYO' => array(
            'ALIADO ZOOM DISTRIBUIDORA DEL SUR 83, C.A.'
            )
    );

    //variables vacias para guardar como arrat los resultados de las iteraciones
    $datos = array();
    $datos1 = array();
    $datos2 = array();
    $datos3 = array();

foreach( $estado["estado_actual"] as $ciudad => $agencia ){
    $datos[] = $ciudad;
    foreach ($estado["estado_actual"][$ciudad] as $name => $key){
        $datos1[] = $name;
    }
    foreach ($agencia as $nombre=>$direccion){
        $datos2[] = $nombre;
        $datos3[] = $direccion;
    }
}

//Se generan el select ciudad
if ( !empty( $estados ) ) {
    $city_fields['shipping']['shipping_city'] =  array(
        'type'     => 'select',
        'options'  => $datos,//Opciones en el array generado
        'label'     => 'Ciudad',
        'placeholder' => 'Ciudad',
        'required'  => true,
        'class'     => array("cb")
    );
}
//Se genera el select agencia
if ( !empty( $datos ) ) {
    $city_fields['shipping']['shipping_agency'] = array(
        'type'     => 'select',
        'options'  => $datos1[0],//Opciones en el array generado
        'label'     => __("Agencia Zoom $estados", 'woocommerce'),
        'required'  => true,
        'class'     => array("store-pickup form-row-wide $agency ")
    );
}
        
    return $city_fields;
}

add_filter( 'woocommerce_checkout_fields' , 'custom_city_field');

?>

formgenerado.html

<div class="shipping_address">

  <p class="form-row form-row form-row-first validate-required" id="shipping_first_name_field">
    <label for="shipping_first_name" class="">Nombre <abbr class="required" title="obligatorio">*</abbr>
    </label>
    <input type="text" class="input-text " name="shipping_first_name" id="shipping_first_name" placeholder="" autocomplete="given-name" value="">
  </p>

  <p class="form-row form-row form-row-last validate-required" id="shipping_last_name_field">
    <label for="shipping_last_name" class="">Apellido <abbr class="required" title="obligatorio">*</abbr>
    </label><input type="text" class="input-text " name="shipping_last_name" id="shipping_last_name" placeholder="" autocomplete="family-name" value="">
  </p>
  <div class="clear"></div>
      
  <p class="form-row form-row form-row-first address-field validate-required validate-state" id="shipping_state_field">
    <label for="shipping_state" class="">Estado <abbr class="required" title="obligatorio">*</abbr>
    </label>
    <div class="select2-container state_select" id="s2id_shipping_state">
      <a href="javascript:void(0)" class="select2-choice" tabindex="-1">
        <span class="select2-chosen" id="select2-chosen-2">Lara</span>
        <abbr class="select2-search-choice-close"></abbr>
        <span class="select2-arrow" role="presentation"><b role="presentation"></b></span>
      </a>
      <label for="s2id_autogen2" class="select2-offscreen">Estado *</label>
      <input class="select2-focusser select2-offscreen" type="text" aria-haspopup="true" role="button" aria-labelledby="select2-chosen-2" id="s2id_autogen2">
      <div class="select2-drop select2-display-none select2-with-searchbox">   
        <div class="select2-search">
          <label for="s2id_autogen2_search" class="select2-offscreen">Estado *</label>
          <input type="text" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false" class="select2-input" role="combobox" aria-expanded="true" aria-autocomplete="list" aria-owns="select2-results-2" id="s2id_autogen2_search" placeholder="">
        </div>
          <ul class="select2-results" role="listbox" id="select2-results-2">
          </ul>
      </div>
    </div>

    <select name="shipping_state" id="shipping_state" class="state_select " data-placeholder="Estado" autocomplete="address-level1" tabindex="-1" title="Estado *" >
      <option value="">Elige un estado/província…</option>
      <option value="AM">Amazonas</option>
      <option value="AN">Anzoátegui</option>
      <option value="AP">Apure</option>
      <option value="AR">Aragua</option>
      <option value="BA">Barinas</option>
      <option value="CA">Carabobo</option>
      <option value="CO">Cojedes</option>
      <option value="DA">Delta Amacuro</option>
      <option value="DC">Distrito Capital</option>
      <option value="FA">Falcón</option>
      <option value="GU">Guárico</option>
      <option value="LA" selected="selected">Lara</option>
      <option value="ME">Mérida</option>
      <option value="MI">Miranda</option>
      <option value="MO">Monagas</option>
      <option value="NE">Nueva Esparta</option>
      <option value="PO">Portuguesa</option>
      <option value="SU">Sucre</option>
      <option value="TA">Táchira</option>
      <option value="TR">Trujillo</option>
      <option value="VA">Vargas</option>
      <option value="YA">Yaracuy</option>
      <option value="ZU">Zulia</option>
    </select>

  </p>

  <!--CAMPO PARA CIUDAD GENERADO EN CHECKOUT.PHP"DEBE DEPENDER DEL ESTADO SELECIONADO"--> 
  <p class="form-row form-row cb validate-required" id="shipping_city_field">
    <label for="shipping_city" class="">Ciudad <abbr class="required" title="obligatorio">*</abbr>
    </label>
    <select name="shipping_city" id="shipping_city" class="select " data-placeholder="Ciudad">
      <option value="0">BARQUSIMETO</option>
      <option value="1">CABUDARE</option>
      <option value="2">CARORA</option>
      <option value="3">EL TOCUYO</option>
    </select>
  </p>
   

  <!--CAMPO PARA AGENCIA GENERADO EN CHECKOUT.PHP "DEBE DEPENDER DE LA CIUDAD SELECCIONADA"-->    
  <p class="form-row form-row store-pickup form-row-wide 0  validate-required" id="shipping_agency_field">
    <label for="shipping_agency" class="">Agencia Zoom LA <abbr class="required" title="obligatorio">*</abbr>
    </label>
    <select name="shipping_agency" id="shipping_agency" class="select " data-placeholder="">
      <option value="0">ZOOM BARQUISIMETO</option>
      <option value="1">ZOOM AEROPUERTO JACINTO LARA</option>
      <option value="2">ALIADO ZOOM EXIMCOM 101, C.A</option>
    </select>
  </p>

</div>