PHP : Get name and value of all input tags on a page with DomDocument

The following code snippet will extract all input tag names and values as an associative array, from a given html page.

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/*     Generic function to fetch all input tags (name and value) on a page Useful when writing automatic login bots/scrapers */ function get_input_tags($html) {     $post_data = array();           // a new dom object     $dom = new DomDocument;           //load the html into the object     $dom->loadHTML($html);     //discard white space     $dom->preserveWhiteSpace = false;           //all input tags as a list     $input_tags = $dom->getElementsByTagName('input');       //get all rows from the table     for ($i = 0; $i < $input_tags->length; $i++)     {         if( is_object($input_tags->item($i)) )         {             $name = $value = '';             $name_o = $input_tags->item($i)->attributes->getNamedItem('name');             if(is_object($name_o))             {                 $name = $name_o->value;                                   $value_o = $input_tags->item($i)->attributes->getNamedItem('value');                 if(is_object($value_o))                 {                     $value = $input_tags->item($i)->attributes->getNamedItem('value')->value;                 }                                   $post_data[$name] = $value;             }         }     }           return $post_data; }   /*     Usage */   error_reporting(~E_WARNING); $html = file_get_contents("https://accounts.google.com/ServiceLoginAuth");   echo "<pre>"; print_r(get_input_tags($html)); echo "</pre>";