How to Create Custom Get Rest Api In WordPress

The WordPress Has In build Rest Api and Also Provides End Points

To Create A Rest Api in word press are

1 :Get Methods

//End point is : http://wpdadd.com/wp-json/api/v1/getwpdaddstaff   add_action( 'rest_api_init', function () {     register_rest_route( 'api', '/v1/getwpdaddstaff', array(     'methods' => 'GET',     'callback' => 'wpdaddStuff',     ));     });     function wpdaddStuff( $request ) {     return 'Welcome to Wpdadd' ;       }

//ouput be

Welcome to Wpdadd

2 – Passing one of number parameter to Get Method

//Endpoint http://wpdadd.com/wp-json/api/v1/get/wpdadd/{number}       add_action( 'rest_api_init', function () {     register_rest_route( 'api', '/v1/get/wpdadd/(?P<id>\d+)', array(     'methods' => 'GET',     'callback' => 'wpdaddStuff',     ));     });           function wpdaddStuff( $request ) {     return $request['id'] ;     }

4 – Passing multiple parameters of combination of number and alphabet using get method

//Endpoint : http://wpdadd.com/wp-json/api/v1/getwp/{parameter 1}/{parameter2}           add_action( 'rest_api_init', function () {     register_rest_route( 'api', '/v1/getwp/(?P<param1>[a-z0-9\-]+)/(?P<param2>[a-z0-9\-]+)', array(     'methods' => 'GET',     'callback' => 'wpdaddStuff',     ));     });           function wpdaddStuff( $request ) {           return $request['param1']." ".$request['param2'];     }