WordPress Netlify Build Hook

netlify.php

<?php

// Netlify Webhook Build Function
// -- this function will trigger a rebuild on post update
// -- add your api key or url below
add_action( 'save_post', 'netlify_rebuild');
function netlify_rebuild( $post_id ) {
    if ( wp_is_post_revision( $post_id ) ) {
        return;
    }
    if ( get_post_status( $post_id ) == 'publish' ) {
        $ch = curl_init();

        curl_setopt($ch, CURLOPT_URL, 'https://api.netlify.com/build_hooks/YOUR-API-KEY');
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, "{}");
        curl_setopt($ch, CURLOPT_POST, 1);

        $headers = array();
        $headers[] = 'Content-Type: application/x-www-form-urlencoded';
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

        $result = curl_exec($ch);
        if (curl_errno($ch)) {
            echo 'Error:' . curl_error($ch);
        }
        curl_close ($ch);

    } else {
        return;
    }
}