Get a user's most recent tweets in PHP (including retweets, formatted mentions/hashtags and friendly dates)

get_tweets.php

<?php

/**
 * Calculate the time elapsed from the timestamp described in the string 
 * and converts into a human-readable version (e.g. "about 3 days ago").
 */
function how_long_ago($date) {
	$ago = false;
	$elapsed = time() - strtotime($date);
	if ($elapsed <= 1) {
		$ago = 'less than 1 second ago';
	} else if ($elapsed < 60) {
		$ago = $elapsed . ' seconds ago';
	} else if ($elapsed < 3600) {
		$minutes = round($elapsed / 60);
		$ago = 'about ' . $minutes . ' minute' . ($minutes > 1 ? 's' : '') . ' ago';
	} else if ($elapsed < 57600) {
		$hours = round($elapsed / 3600);
		$ago = 'about ' . $hours . ' hour' . ($hours > 1 ? 's' : '') . ' ago';
	} else if ($elapsed < (time() - strtotime('yesterday'))) {
		$ago = 'yesterday';
	} else if ($elapsed < 86400) {
		$hours = round($elapsed / 3600);
		$ago = 'about ' . $hours . ' hour' . ($hours > 1 ? 's' : '') . ' ago';
	} else if ($elapsed < 561600) {
		$ago = 'about ' . round($elapsed / 86400) . ' days ago';
	} else if ($elapsed < (time() - strtotime('last week'))) {
		$ago = 'last week';
	} else if (round($elapsed / 604800)  == 1) {
		$ago = 'about a week ago';
	} else if ($elapsed < 2116800) {
		$ago = 'about ' . round($elapsed / 604800) . ' weeks ago';
	} else if ($elapsed < (time() - strtotime('last month'))) {
		$ago = 'last month';
	} else if (round($elapsed / 2419200)  == 1) {
		$ago = 'about a month ago';
	} else if ($elapsed < 27820800) {
		$ago = 'about ' . round($elapsed / 2419200) . ' months ago';
	} else if ($elapsed < (time() - strtotime('last year'))) {
		$ago = 'last year';
	} else if (round($elapsed / 31449600) == 1) {
		$ago = 'about a year ago';
	} else if ($elapsed >= 29030400) {
		$ago = 'about ' . round($elapsed / 31449600) . ' years ago';
	}
	return $ago;
}


/**
 * Adds links to entities (mentions, hashtags and urls) in a tweet text.
 */
function entities($text, $entities) {
	$search = array();
	$replace = array();
	foreach($entities->user_mentions as $entity) {
		$search[] = '@' . $entity->screen_name;
		$replace[] = '<a title="' . $entity->name . ' on Twitter (@' . $entity->screen_name . ')" target="_blank" href="http://twitter.com/' . $entity->screen_name . '">@' . $entity->screen_name . '</a>';
	}
	foreach($entities->hashtags as $entity){
		$search[] = '#' . $entity->text;
		$replace[] = '<a title="#' . $entity->text . ' on Twitter" target="_blank" href="http://twitter.com/search?q=%23' . $entity->text . '">#' . $entity->text . '</a>';
	}
	foreach($entities->urls as $entity){
		$search[] = $entity->url;
		$replace[] = '<a title="' . $entity->expanded_url . '" target="_blank" href="' . $entity->url . '">' . (isset($entity->display_url) ? $entity->display_url : $entity->expanded_url) . '</a>';
	}
	return str_replace($search, $replace, $text);
}


$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://api.twitter.com/1/statuses/user_timeline.json?include_entities=true&include_rts=true&screen_name=wildpeaks&count=20');
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$json = curl_exec($ch);
curl_close($ch);

$tweets = @json_decode($json);
if (!empty($tweets)) {
	foreach ($tweets as $tweet) {
		echo '<div class="tweet">';

		$retweeted = false;
		if (isset($tweet->retweeted_status)) {
			$retweeted = $tweet->user;
			$tweet = $tweet->retweeted_status;
		}

		$user = $tweet->user;
		echo '<div class="author">';
		if (isset($user->profile_image_url)) echo '<img src="' . $user->profile_image_url . '" /> ';
		if ($retweeted) echo 'RT ';
		echo '<a lang="en" href="http://twitter.com/' . $user->screen_name . '" title="' . $user->description . ' - ' . $user->name . ' on Twitter (@' . $user->screen_name . ')">' . $user->screen_name . '</a>';
		echo ' &ndash; ' . how_long_ago($tweet->created_at);

		echo '</div>';
		echo '<p>' . entities($tweet->text, $tweet->entities) . '</p>';
		echo '</div>';
	}
}

?>

styles.css

* {
	margin: 0;
	padding: 0;
	font-smooth: always;
}

html, body {
	margin: 0;
	padding: 0;
	border: 0;
	height: 100%;
}

body {
	color: #7F7F7F;
	background: #FFFFFF;
	font-size: 62.5%;
	font-family: sans-serif;
}


.tweet {
	font-size: 1.2em;
	line-height: 2.4em;
	border: 1px solid #C0C0C0;
	padding: 20px;
	margin: 10px;
}
.tweet img {
	height: 24px;
	vertical-align: middle;
	margin-right: 2px;
}