接入物流api案例

<?php 
//add some shortcode
add_action('woocommerce_before_shop_loop','add_code',10);
function add_code(){
	echo do_shortcode("[woof]"); 
	//echo do_shortcode('[woof_price_filter type =“text”] ');
}


//add a custom area to checkout page 

add_action('woocommerce_after_order_notes', 'customise_checkout_field');

function customise_checkout_field($checkout)
{
	echo '<div id="customise_checkout_field_shipping"><h2>' . __('Shipping Method') . '</h2>';
	woocommerce_form_field('customised_field_name', array(
		'type' => 'select',
	    'options'     => array(
        	'HKDHL' => __('HKDHL', 'woocommerce' ),
        	'EMS' => __('EMS', 'woocommerce' )
        ),
		'class' => array(
			'my-field-class form-row-wide'
		) ,
		'label' => __('Customise Additional Field') ,
		'placeholder' => __('Guidence') ,
		'required' => true,
	) , $checkout->get_value('customised_field_name'));
	echo '</div>';
}


// add weight
add_action('woocommerce_before_checkout_form', 'bbloomer_print_cart_weight');
 
function bbloomer_print_cart_weight( $posted ) {
global $woocommerce;
$notice = 'Your cart weight is: <span id="myWeight">' . $woocommerce->cart->cart_contents_weight . get_option('woocommerce_weight_unit').'</span>';
if( is_checkout() ) {
    wc_print_notice( $notice, 'notice' );
} else {
    wc_add_notice( $notice, 'notice' );
}
}



//add some code to checkout 
add_action('woocommerce_after_order_notes','myshipping');
function myshipping(){
	
	echo "
	<script>
		var _myContry,_myWeight,_my_channelId,strMy,priceMy;
  var _myContry_select = document.querySelector('#billing_country');
  _myContry_select.onchange=function(event){
    _myContry = event.target.value;
	_myWeight = document.getElementById('myWeight').innerText;
	  _myWeight=_myWeight.substring(0,_myWeight.length-2);
	  console.log(_myWeight);
    console.log(_myContry);
   jQuery('#billing_email').focus(function(){
   		jQuery.ajax({
      url:'https://www.billiardsupermarket.com/wp-content/uploads/getMyshipping.php',
      method:'GET',
      data:{'_myContry':_myContry,'_myWeight':_myWeight},
      success:function(data){
	  strMy= JSON.parse(data);//将json字符串格式转为js对象
      	console.log(strMy);
        jQuery('#customise_checkout_field_shipping select').change(function(event){
				_my_channelId = event.target.value;
				console.log(_my_channelId);
				for(var i=0;i<strMy[0].length;i++){
					if(_my_channelId==strMy[0][i][0]){
					priceMy = strMy[1][i];

					}
				}
				
				//document.cookie = 'priceMy='+priceMy+'; expires=Thu, 18 Dec 2019 12:00:00 UTC';
        });
      },
      error:function(data){
        console.log('data is error!please check.');
      }
      });
   });
  }


</script>";


}
//add some fee to checkout page
add_action( 'woocommerce_cart_calculate_fees','endo_handling_fee' );
function endo_handling_fee() {
     global $woocommerce;
 
     if ( is_admin() && ! defined( 'DOING_AJAX' ) )
          return;
 
     $fee= $_COOKIE['priceMy'];
		$feeNum=(int)$fee;
     $woocommerce->cart->add_fee( 'Shipping', $feeNum, true, 'standard' );
}



	$data = json_decode($_POST['_myContry']);
	print_r($data);
	if($data){
			add_action( 'woocommerce_cart_calculate_fees','endo_handling_fee' );
	function endo_handling_fee() {
     global $woocommerce;
 
     if ( is_admin() && ! defined( 'DOING_AJAX' ) )
          return;
 		
       $fee= $data;
		$feeNum=(int)$fee;
     $woocommerce->cart->add_fee( 'Shipping', $feeNum, true, 'standard' );
      }
	}



 ?>

<?php 
$xml1 = '<?xml version="1.0" encoding="utf-8"?>
<GePriceServiceRequest>
<authtoken>哈哈哈哈哈哈</authtoken>
<clientid>哈哈哈哈哈哈</clientid>
<country>';
$xml2 = '</country><rweight>';
$xml3 = '</rweight></GePriceServiceRequest>';
$xml = $xml1.$_GET["_myContry"].$xml2.$_GET["_myWeight"].$xml3;
$client = new SoapClient(null, array(
  'location' => 'http://oa.myex.cc/services/APIPrice?Wsdl',
  'uri' => 'http://oa.myex.cc/services/APIPrice?Wsdl',
) );
$result = $client->getPrice($xml);
// print_r($result);
$result_str =str_replace("<br>","",$result);//字符创替换
$result_str =str_replace("&","",$result_str);
// print_r($result_str);
$xmlarr = simplexml_load_string($result_str)->Price;//将xml字符串格式转为对象格式
// print_r($xmlarr);

$shipping_channelid=[];
$shipping_amt=[];
$shipping_all=[];
foreach($xmlarr as $key => $value) {
	 array_push($shipping_channelid,$value->channelid);//加入到数组
	 array_push($shipping_amt,ceil($value->amt/7));
}

// print_r($shipping_channelid);
// print_r($shipping_amt);
array_push($shipping_all, $shipping_channelid,$shipping_amt);
// print_r($shipping_all);
echo json_encode($shipping_all);//将数组解析为json字符串格式
 ?>

要点:$xmlarr = simplexml_load_string($result_str)这个可以将xml字符串格式转为对象形式

js变量传给php,可以通过ajax发送参数的形式发给后台接收;
也可以在js中进行cookie的存储,在php文件中调用$_COOKIE全局变量进行获取

php 变量给js ```
var a =