DOMXPath - How can we search a js object using php - php

Question

I want to get a specific js object from a different url using php.
Or
I want to get js script text from a different url using php.
I am using this approach.
$html = file_get_contents($url);
$ddoc = new DOMDocument();
libxml_use_internal_errors(TRUE);
if(!empty($html)){ //if any html is actually returned
$ddoc->loadHTML($html);
libxml_clear_errors(); //remove errors for yucky html
$xxpath = new DOMXPath($ddoc);
$rrrow = $xxpath->query("//script[contains(#src, 'pcode')]");
}

Answer 1

You neglect to state what, if anything, is happening with your code. I tried vitrually an identical approach and it worked perfectly ( see below ) so without knowing the url which you are trying to target I would suggest that you try adding a context to the file_get_contents as, in many cases, a server can be configured to reject requests where there is no User-Agent string present.
$url='http://beautifulbathrooms.tumblr.com/';
$query='//script[contains(#src,"jquery")]';
$dom=new DOMDocument;
$dom->validateOnParse=false;
$dom->standalone=true;
$dom->preserveWhiteSpace=true;
$dom->strictErrorChecking=false;
$dom->substituteEntities=false;
$dom->recover=true;
$dom->formatOutput=false;
$dom->loadHTML( file_get_contents( $url ) );
libxml_clear_errors();
$xp=new DOMXPath( $dom );
$col=$xp->query( $query );
if( !empty( $col ) ){
foreach( $col as $script ) echo $script->getAttribute('src').BR;
}
With a context argument to file_get_contents
$url='http://beautifulbathrooms.tumblr.com/';
$query='//script[contains(#src,"jquery")]';
$args=array(
'http'=>array(
'method' => 'GET',
'header' => implode( "\n", array(
'User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0',
'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
'Host: beautifulbathrooms.tumblr.com'
)
)
)
);
/* create the context */
$context=stream_context_create( $args );
$dom=new DOMDocument;
$dom->validateOnParse=false;
$dom->standalone=true;
$dom->preserveWhiteSpace=true;
$dom->strictErrorChecking=false;
$dom->substituteEntities=false;
$dom->recover=true;
$dom->formatOutput=false;
$dom->loadHTML( file_get_contents( $url, FILE_TEXT, $context ) );
libxml_clear_errors();
$xp=new DOMXPath( $dom );
$col=$xp->query( $query );
if( !empty( $col ) ){
foreach( $col as $script ) echo $script->getAttribute('src').BR;
}