API de WordPress: inserte una nueva etiqueta / obtenga una etiqueta

RIZO:

1 2	base64credentials="VVNFUjpQQVNTV09SRA==" curl -sk --request POST --url http://tutorialspots.com/wp-json/wp/v2/tags --header "authorization: Basic $base64credentials" --header "content-type: application/json" -d '{"name":"test"}'

Resultado para insertar una nueva etiqueta:

1

{"id":1602,"count":0,"description":"","link":"http:\/\/tutorialspots.com\/tag\/test\/","name":"test","slug":"test","taxonomy":"post_tag","meta":[],"_links":{"self":[{"href":"http:\/\/tutorialspots.com\/wp-json\/wp\/v2\/tags\/1602"}],"collection":[{"href":"http:\/\/tutorialspots.com\/wp-json\/wp\/v2\/tags"}],"about":[{"href":"http:\/\/tutorialspots.com\/wp-json\/wp\/v2\/taxonomies\/post_tag"}],"wp:post_type":[{"href":"http:\/\/tutorialspots.com\/wp-json\/wp\/v2\/posts?tags=1602"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

Resultado para obtener una etiqueta por nombre:

1	{"code":"term_exists","message":"A term with the name provided already exists in this taxonomy.","data":{"status":400,"term_id":1602}}

PHP:

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<?php   function grabAPI($url,$method='POST',$data='') {     $ch = curl_init();     curl_setopt($ch, CURLOPT_URL, $url);         curl_setopt($ch, CURLOPT_TIMEOUT,30);         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);     curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);     curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);     $uaa = 'Mozilla/5.0 (Windows; U; Windows NT 6.0; de; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3';     curl_setopt($ch, CURLOPT_USERAGENT, $uaa);     $header = array(         'authorization: Basic VVNFUjpQQVNTV09SRA==',         'content-type: application/json',     );     curl_setopt($ch, CURLOPT_HTTPHEADER, $header);           curl_setopt($ch, CURLOPT_CUSTOMREQUEST,$method);     if($data)         curl_setopt($ch, CURLOPT_POSTFIELDS,$data);           return curl_exec($ch); }    $x = grabAPI('http://tutorialspots.com/wp-json/wp/v2/tags','POST','{"name":"test"}'); $x = json_decode($x); $x = empty($x->data->term_id)?$x->id:$x->data->term_id; echo $x;