Cities in Rectangle using PEAR

If you want to show cities in certain rectangle this is the right tutorial for you. However you need to install PEAR and GeoNames package first since this script relies on GeoNames API.
You set coordinates for rectangle, language and number of cities in the array.

Twitter API 1.1 Tutorial

Twitter has launched a new API version 1.1 so you need to update your PHP scripts. If you use Abraham Williams - @abraham twitteroauth.php script you need to update it like this: find row public $host = "https://api.twitter.com/1/"; and replace with public $host = "https://api.twitter.com/1.1/";. Download the script at http://github.com/abraham/twitteroauth.

If you don't update your code like this some functions will not work, like Twitter search. You need to register your application at http://dev.twitter.com/apps/new. Once you register your application get following keys:Consumer key, Consumer secret, Access token secret, Access token and put them in your code. You must make sure that your host supports cURL.

OK here is the directory structure:

index.php
twitteroauth
- OAuth.php
- twitteroauth.php

and here is index.php:

<?php
$consumer_key = "";
$consumer_secret = "";
$access_key = "";
$access_secret = "";

require_once('twitteroauth/twitteroauth.php');

// create an object from TwitterOAuth
$connection = new TwitterOAuth ($consumer_key ,$consumer_secret , $access_key , $access_secret );

$content = $connection->get("statuses/user_timeline",
                             array('screen_name'=>'ibm',
                                   'count'=>'20') );

foreach( $content as $item )
{
  echo $item->text."<br/><br/>\n";
}
?>

Yellow highlighted is the method name and green highlighted text are parameters
for the API call. This
script shows last 20 tweets from IBM. Full info is at statuses/user_timeline
API page.

<?php
$consumer_key = "";
$consumer_secret = "";
$access_key = "";
$access_secret = "";

require_once('twitteroauth/twitteroauth.php');

// create an object from TwitterOAuth
$connection = new TwitterOAuth ($consumer_key ,$consumer_secret , $access_key , $access_secret );

$content = $connection->get("search/tweets",
                             array('q'=>'bar',
                                   'geocode'=>'37.781157,-122.398720,100km',
                                   'count'=>'5',
                                   'lang'=>'en'));

echo"<pre style='border:dotted;padding:5px;background:lightgrey'>";
var_dump($content->statuses[0]->text);
var_dump($content->statuses[0]->user->id);
var_dump($content->statuses[0]->user->screen_name);
echo"</pre>";

echo"<pre style='border:dotted;padding:5px;background:lightgrey'>";
print_r($content);
echo"</pre>";
?>

This code shows first tweet, user_id and screen name. print_r($content) shows first five results for keyword 'bar' 100 km around San Francisco (37.781157,-122.398720) in English. Complete reference is at search/tweets API page.