Basics of how APIs are created


gateway for more secure deployment of your application . All u need to know is soap, restful APIs, json and XML to implement them using any programming language.

example of an hosted api endpoints
api.example.com/item_list


A script was hosted to form the url to make multiple user use the api and safeguard the app.
The gateway script needs to be hosted.
let take 5 things into consideration
1. the gateway URL (hosted script of API)
2. json /xml
3. restful api/soap
4. response
5. redirection
These 5 points need to be written using paper and a pen before implementation.



Examples of APIs Gateway




NGINX API Gateway

Amazon API Gateway

strongloop API Gateway

php

<?php  $url = 'https://api.example.com/;
$key=gejdjehhejej;
 $ch = curl_init();  
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);

    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Header: value'));  CURLOPT_RETURNTRANSFER, true);

 $curl_setopt($ch, CURLOPT_URL, $url);
 

    $result = curl_exec($ch);

    curl_close($ch);

    $result = json_decode($result)
}
?>

Note that there are get, post, delete, update and add request so numerous using HTTP connection (stream)or curl to utilize the data from the api endpoint . you can test ur api using a tool called postman to test your api on developmental stage.

Another method is web scraping using Spinn3r or ParseHub to get data from your website .