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job_tracker_10sep2015.php
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job_tracker_10sep2015.php
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<?php
error_reporting(0);
ini_set('max_execution_time', 0);
$time_start = microtime(true);
$site_url = 'http://'.$_SERVER['HTTP_HOST'].'/jobscrapperv2/';
$dir = dirname(__FILE__).'/';
require($dir.'db.php');
require($dir.'model.php');
$_POST['csv_file'] = 'job_titles';
$model= new Model();
$sites = $model->getActiveSites();
if (ob_get_level() == 0) ob_start();
foreach($sites as $sindxK => $site){
$site_scrap_time_start = microtime(true);
//$model->deleteTodaysJobActivities($site['id'],date('Y-m-d',time()));
unset($output);
$url = $site['job_url'];
echo ($sindxK+1) . ' : ' . $url. ' ';
$output = crawl_page($url,1);
if(count($output[1]) <= 4){
$content_search = contentSearch($url);
$result = array_merge($output[1],$content_search);
unset($output[1]);
$output[1] = $result;
}
$site_scrap_time_end = microtime(true);
$site_scrap_time = $site_scrap_time_end - $site_scrap_time_start;
//echo $site_scrap_time . ' secs'. '(site scrap time)<br />';
echo '<br />';
ob_flush();
flush();
$lastScrapedSiteJobs = $model->getSiteJobs($site['id']);
//checking currently scraped jobs with previously scraped jobs
$jobExpired = true;
foreach($lastScrapedSiteJobs as $ljob){
foreach($output[1] as $outputIndx => $job){
if(strtolower(trim($job[0])) == strtolower(trim($ljob['job_title']))){ //if existed
$model->updateJobStatus($site['id'],$ljob['id'],'existed');
unset($output[1][$outputIndx]); //remove from checking pool
$jobExpired = false;
break;
}
}
if($jobExpired){
$model->updateJobStatus($site['id'],$ljob['id'],'expired');
}
}//outer for
//all remaining job are NEW, becoz they are neither existed nor expired status
$model->addNewJobs($site['id'],$output[1]);
}//end for sites
$time_end = microtime(true);
$time = $time_end - $time_start;
echo '<br />' . $time . ' secs';
exit;
function pr($a){
echo '<PRE>';
print_r($a);
echo '</PRE>';
}
function contentSearch($url){
$dom = new DOMDocument;
@$dom->loadHTMLFile($url);
//$dom->loadHTML( '<?xml encoding="UTF-8">' . $content );
$output = array();
$csv_file = $_POST['csv_file'];
$xpath = new DOMXPath( $dom );
$textNodes = $xpath->query( '//text()' );
foreach ( $textNodes as $textNode ) {
$parent = $textNode;
while ( $parent ) {
if ( ! empty( $parent->tagName ) && in_array( strtolower( $parent->tagName ), array( 'pre', 'code', 'a' ) ) && str_word_count($parent->nodeValue) > 6 ) {
continue 2;
}
if(str_word_count($parent->nodeValue) < 6 && !empty($parent->tagName) ){
$job_title_file = fopen("$csv_file" .".csv", 'r');
while($row = fgetcsv($job_title_file)){
$nv = strip_tags($parent->nodeValue);
if(preg_match("/\b". $row[0] . "\b/i", $nv)){ //job title found
//echo $parent->tagName . '===' . $parent->nodeValue . '===' . $row[0] . '<br />';
$output[] = array($nv,'');
fclose($job_title_file);
break;
}
}
}
$parent = $parent->parentNode;
}//end while parent
}//end for
return $output;
}//end function
function crawl_page($url,$depth = 1)
{
$csv_file = $_POST['csv_file'];
//if (ob_get_level() == 0) ob_start();
static $seen = array();
if (isset($seen[$url]) || $depth === 0) {
return;
}
//echo 'Scanned URL : ' . $url. '<br /><br /><br />';
$seen[$url] = true;
$output = array();
$dom = new DOMDocument('1.0');
@$dom->loadHTMLFile($url);
$anchors = $dom->getElementsByTagName('a');
foreach ($anchors as $element) {
$str='';
$href = $element->getAttribute('href');
//if(validURL($href)){
$job_title_file = fopen("$csv_file" .".csv", 'r');
//$job_title_file = fopen('job_titles.csv', 'r');
//echo $href . '<br /><br />';
$nodes = $element->childNodes;
//$str .= $href . " : ";
foreach ($nodes as $node)
{
if(!empty($node->nodeValue) && trim($node->nodeValue) != '' && $node->nodeName != 'img' ){
$o_job_title = '';
while($row = fgetcsv($job_title_file)){
//echo $row[0] . '===' . $node->nodeValue . '<br />';
//$match = strripos( $node->nodeValue,$row[0]);
//if($match !== false){
if(preg_match("/\b". $row[0] . "\b/i", $node->nodeValue)){
//echo $href . '==='. $node->nodeValue . '===' . $row[0] . '<br />';
$o_job_title = $node->nodeValue .'';
fclose($job_title_file);
break;
}
}
if(!empty($o_job_title)){
$output[] = array($o_job_title,$href);
}
//$str .= $node->nodeName . ' : '. $node->nodeValue. ",";
break;
}
}
//}validURL
//$output[]=array($href,$element->nodeValue);
//echo $element->nodeValue . " : " . $href . "<br />"; // Output content
//ob_flush();
//flush();
//sleep(2);
if (0 !== strpos($href, 'http')) {
$path = '/' . ltrim($href, '/');
if (extension_loaded('http')) {
$href = http_build_url($url, array('path' => $path));
} else {
$parts = parse_url($url);
$href = $parts['scheme'] . '://';
if (isset($parts['user']) && isset($parts['pass'])) {
$href .= $parts['user'] . ':' . $parts['pass'] . '@';
}
$href .= $parts['host'];
if (isset($parts['port'])) {
$href .= ':' . $parts['port'];
}
$href .= $path;
}
}
//crawl_page($href, $depth - 1);
}
//ob_end_flush();
return array($seen,$output);
}
function validURL($url){
$urlComp = parse_url($url);
//echo $url;print_r($urlComp);
if(isset($urlComp['host']))return true;
elseif(isset($urlComp['path']) && !isset($urlComp['host']) )return true;
elseif(!isset($urlComp['path']))return false;
else return false;
}//end function
mysql_close($link);
?>