Add a post to WordPress remotely with XML-RPC and PHP

For the sake of this exercise, I am assuming that you have a clear understanding of what XML-RPC is. If not, read more about it here. I am also assuming that XML-RPC is enabled on your wordpress blog and you have the required IXR_Library.php.inc downloaded from here.

The code below is self-explanatory.

<?php

require_once("IXR_Library.php.inc");
$client->debug = true; //Set it to false in Production Environment
$dom = 'Your Blog Path/xmlrpc.php';

$title = "Blog Title"; // $title variable will insert your blog title
$body = "Blog Content"; // $body will insert your blog content (article content)
$category = "category1, category2"; // Comma seperated pre existing categories. Ensure that these categories exists in your blog.
$keywords = "keyword1, keyword2, keyword3";
$customfields = array('key' => 'Author-bio', 'value' => 'Autor Bio Here'); // Insert your custom values like this in Key, Value format

$title = htmlentities($title, ENT_NOQUOTES, $encoding);
$keywords = htmlentities($keywords, ENT_NOQUOTES, $encoding);

$content = array(
'title' => $title,
'description' => $body,
'mt_allow_comments' => 0, // 1 to allow comments
'mt_allow_pings' => 0, // 1 to allow trackbacks
'post_type' => 'post',
'mt_keywords' => $keywords,
'categories' => array($category),
'custom_fields' => array($customfields)
);

// Create the client object
$client = new IXR_Client($dom);
$username = "USERNAME";
$password = "PASSWORD";

$params = array(0, $username, $password, $content, true); // Last parameter is 'true' which means post immediately, to save as draft set it as 'false'

// Run a query for PHP 
if (!$client->query('metaWeblog.newPost', $params)) {
die('Something went wrong - '.$client->getErrorCode().' : '.$client->getErrorMessage());
} 
else 
{ 
echo "Article Posted Successfully"; 
}

?>