PHP Craigslist job finder (scraper)

craigslist.php

<?php
/**
 * Craigslist job finder
 * Scans a given Craigslist section, checks titles for keyword(s), then emails when found.
 * @author    Johan <johan@asbra.net>
 * @date      2014-11-10
 * @modified  2014-11-10
 */
// the $keyword variable contains the keywords you want to find
// $keyword = 'programmer';
// it supports regular expressions
// $keyword = '/(programm?er|coder)/i';
// and also supports taking an array of keywords
// $keyword = array('programmer', 'coder');
$keyword = array('model', 'actress');

// The city to look in, it is the subdomain ie. newyork.craigslist.org
$city = 'newyork';

// Section to search for the keyword(s) in
$section = 'jjj'; // jjj=jobs

// Email settings
// Email address to send to and subject line of the email
$email_to = 'john.smith@gmail.com';
$email_subject = 'CraigsList jobs found!';

///////////////////////////////////////////////////////////////////////////////
// Do not modify below this line

// Depends on my cURL wrapper http://asbra.net/php-curl-class-snippet-tutorial/
require 'curl.php';
$curl = new cURL();

$url = 'http://'.$city.'.craigslist.org/search/'.$section;

$curl->get($url);

// Regex to match the links
$regex = '/<a[^>]*?href="([^"]+)"[^>]*?class="hdrlnk"[^>]*?>([^<]+)<\/a>/';
preg_match_all($regex, $curl->data, $matches);

echo 'Found '.count($matches[0])." jobs total\r\n";

set_error_handler(function() { /* ignore errors */ });

$found = 0;

function search($keyword)
{
	global $matches;

	for ($i = 0; $i < count($matches[0]); $i++)
	{
		$link  = $matches[1][$i];
		$title = $matches[2][$i];
		$html  = '<a href="'.$link.'">'.$title.'</a>'."\r\n";

		echo "Searching for keyword {$keyword} in '{$title}'\r\n";

		if (stripos($title, $keyword) !== false || preg_match($keyword, $title) === 1)
		{
			global $found;
			$found++;

			echo "{$title}\r\n";

			return $html;
		}
	}

	return false;
}

$html = '';

if (is_array($keyword))
{
	foreach ($keyword as $kw)
	{
		$html .= search($kw);
	}
}
else
{
	$html = search($keyword);
}

if (!empty($html)) {
	mail($email_to, $email_subject, $html);
	echo "Sent email\r\n{$html}\r\n";
}

restore_error_handler();

echo "Found {$found} matching jobs\r\n";