JasonMuk

function get_meta_by_meta_id( $meta_id ) {
  global $wpdb;
	  	
	$meta[meta_id]    = $meta_id;
	$meta[post_id]    = $wpdb->get_var( $wpdb->prepare("SELECT post_id FROM $wpdb->postmeta WHERE meta_id = %s", $meta_id) );
	$meta[meta_key]   = $wpdb->get_var( $wpdb->prepare("SELECT meta_key FROM $wpdb->postmeta WHERE meta_id = %s", $meta_id) );
	$meta[meta_value] = $wpdb->get_var( $wpdb->prepare("SELECT meta_value FROM $wpdb->postmeta WHERE meta_id = %s", $meta_id) );

  return $meta;
}

JasonMuk

<?php
if (!function_exists('get_post_id_by_meta_key_and_value')) {
	/**
	 * Get post id from meta key and value
	 * @param string $key
	 * @param mixed $value
	 * @return int|bool
	 * @author David M&aring;rtensson <david.martensson@gmail.com>
	 */
	function get_post_id_by_meta_key_and_value($key, $value) {

JasonMuk

$url = "http://www.example.org/";

$curl = curl_init();
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_URL, $url);

$data = curl_exec($curl);
curl_close($curl);