Question

I have this line in my code:

$item=$page->items;

$page is an array, and its content is as it should be but $item is Null. do you have any idea what could be the reason?

UPDATE:

<?php

search( "Steve Jobs" );

// Submit query to Google Web Search
function search( $query )
{
  $url = "https://www.googleapis.com/customsearch/v1?key=YOUR_KEY&cx=YOUR_SEARCHE_NGINE_ID&q=" . urlencode( $query ) .  "&callback=handleResponse&prettyprint=true&num=10";

  $result = get_web_page( $url );

  // Exception handling
  if ( $result['http_code'] == 403 )
      echo "... error: daily limit exceeded ...";
  if ( $result['errno'] != 0 )
      echo "... error: bad url, timeout, redirect loop ...";
  if ( $result['http_code'] != 200 )
      echo "... error: no page, no permissions, no service ...";
  // Get and parse JSON output
  $page = $result['content']; 

  $page = str_replace("// API callback\nhandleResponse(", "", $page);
  $page = str_replace(");", "", $page);    
  $page=json_decode($page, true);

  // Print results

$items=$page->items;
     var_dump($items);

  for ($i = 0; $i < sizeof($items); $i++)
  {
      $item = $items[$i];
      print("<font size=\"3\">" . "<a href=\"" . $item->link . "\" target=\"_blank\">" . $item->htmlTitle . "</a></font><br>");
      print("<font size=\"2\" color=\"black\">" . $item->htmlSnippet . "</font><br>");
      print("<font size=\"2\" color=\"green\">" . $item->displayLink . "</font><br>");      print("<br>");
  }

}


function get_web_page( $url )
{
  $options = array(
      CURLOPT_RETURNTRANSFER => true,     // return web page
      CURLOPT_HEADER         => false,    // don't return headers
      CURLOPT_FOLLOWLOCATION => true,     // follow redirects
      CURLOPT_ENCODING       => "",       // handle all encodings
      CURLOPT_USERAGENT      => "spider", // who am i
      CURLOPT_AUTOREFERER    => true,     // set referer on redirect
      CURLOPT_CONNECTTIMEOUT => 120,      // timeout on connect
      CURLOPT_TIMEOUT        => 120,      // timeout on response
      CURLOPT_MAXREDIRS      => 10,       // stop after 10 redirects
  );

  $ch = curl_init( $url );
  curl_setopt_array( $ch, $options );
  curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); 
 // curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
  $content = curl_exec( $ch );
  $err     = curl_errno( $ch );
  $errmsg  = curl_error( $ch );
  $header  = curl_getinfo( $ch );
  curl_close( $ch );

  $header['errno']   = $err;
  $header['errmsg']  = $errmsg;
  $header['content'] = $content;
  return $header;
}

?>

ANSWER:

this part should be changed since $page is an array.

$items = $page['items'];
    foreach ($items as $item)
  {
      $item = (object) $item;
      print("<font size=\"3\">" . "<a href=\"" . $item->link . "\" target=\"_blank\">" . $item->htmlTitle . "</a></font><br>");
      print("<font size=\"2\" color=\"black\">" . $item->htmlSnippet . "</font><br>");
      print("<font size=\"2\" color=\"green\">" . $item->displayLink . "</font><br>");      print("<br>");
  }

Answer 1

Simple question, simple answer:

$item is NULL because $page->items is NULL.

More details:

You’re treating $page as an object, but you write it’s an array.

Suggestion:

Treat $page as an array instead.

Further information:

The PHP manual has information how to treat a value like an array or like an object. Additionally if you enable warnings on your development box, you will be notified about undefined properties which are always NULL.

Update:

For your concrete code, with a slight modification this should work, just change your for loop a bit:

  foreach ($items as $item)
  {
      $item = (object) $item;
      print("<font size=\"3\">" . "<a href=\"" . $item->link . "\" target=\"_blank\">" . $item->htmlTitle . "</a></font><br>");
      print("<font size=\"2\" color=\"black\">" . $item->htmlSnippet . "</font><br>");
      print("<font size=\"2\" color=\"green\">" . $item->displayLink . "</font><br>");      print("<br>");
  }