Generate Google Trends keywords with PHP

googletrends.php

<?php
/*
 This code is used for get the keywords from the
 Google HotTrens.U can use the grabtrends() to get
 the curerent trends words. it return an array of keywords
 u can change the $url to get coountry specific keywords
 ex: $url = "<a class="linkclass" href="http://www.google.co.in/trends/hottrends">http://www.google.co.in/trends/hottrends</a>";
 gives the INDIAN keywords
 
*/
 
//---- this function returns the keywords---
function grabtrends()
{
    $url = "<a class="linkclass" href="http://www.google.com/trends/hottrends">http://www.google.com/trends/hottrends</a>";
    global $trendurl;
    $url=$trendurl;
    $arr = curlgrab($url);
 
    $pattern = '|&sa=X">(.*?)</a>|';
    $matches = null;
    preg_match_all( $pattern, $arr['page'], $matches );
 
    return $matches[1]; // output is an array of key words
}
 
//---- functio to get data from a website--/
function curlgrab( $url, $ch = null ) {
 
    if( $ch != null ) {
         curl_setopt( $ch, CURLOPT_URL, $url );
    }
     else
     {
        $ch = curl_init( $url );
        curl_setopt( $ch,CURLOPT_RETURNTRANSFER, true );
        curl_setopt( $ch, CURLOPT_COOKIEJAR, 'cookies.txt' );
        curl_setopt( $ch, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible; MSIE 5.01;Windows NT 5.0)" );
      }
 
$arr[ 'ch' ] = $ch;
$arr[ 'page' ] = curl_exec( $ch );
return $arr;
}
?>

testgoogletrends.php

// include the above code 
 
$out=grabtrends();
echo '<h2>Google Trends Keywords</h2>';
 
foreach($out as $keyword)
       echo "<h3>".$keyword."</h3>";