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Magento 2 Create API with samples - Snippet

Magento 2 Create API means helping online retailers generate an Application Programming Interface for the own using. The API is a set of routines, protocols and other tools to design software applications. Thus, API is a required element to connect among the data if you ask for any program or service from other websites. With the creation of API in Magento 2, you can easily get all building blocks to initiate a program successfully.

To support better in Magento 2 module development, Mageplaza team attempts to build API tester in your hello world module of Magento 2 module development series. http://<magento_host>/swagger

What is API?

API stands for Application Programming Interface to allow you access the data from an application. API can be called as a middleman between a programmer and an application. When the programmer calls for a request via the middleman, if the request is approved, the right data will be turned back.

As eCommerce stores basing on Magento 2 platform, you should look at two architectural kinds of the web APIs: REST (Representational State Transfer) and SOAP (Simple Object Access Protocol). However, in the official documentation, they only come with raw curl request without any example. In order to connect and use Magento 2 API effectively, this topic will show you PHP examples in specific.


File: etc/webapi.xml

<?xml version="1.0" ?>
<routes xmlns:xsi="" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Webapi:etc/webapi.xsd">
	<route method="GET" url="/V1/mageplaza-helloworld/post">
		<service class="Mageplaza\HelloWorld\Api\PostManagementInterface" method="getPost"/>
			<resource ref="anonymous"/>

File: etc/di.xml

<?xml version="1.0" ?>
<config xmlns:xsi="" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
	<preference for="Mageplaza\HelloWorld\Api\PostManagementInterface" type="Mageplaza\HelloWorld\Model\PostManagement"/>

File: Model/PostManagement.php

namespace Mageplaza\HelloWorld\Model;
class PostManagement {

	 * {@inheritdoc}
	public function getPost($param)
		return 'api GET return the $param ' . $param;

File: Api/PostManagementInterface.php

namespace Mageplaza\HelloWorld\Api;
interface PostManagementInterface {

	 * GET for Post api
	 * @param string $param
	 * @return string
	public function getPost($param);

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