Viewed   125 times

I have a PHP application that will on occasion have to handle URLs where more than one parameter in the URL will have the same name. Is there an easy way to retrieve all the values for a given key? PHP $_GET returns only the last value.

To make this concrete, my application is an OpenURL resolver, and may get URL parameters like this:

&rft.btitle=At last: a Christmas in the West Indies. 
& and co.,
&, Charles,

(Yes, I know it's ugly, welcome to my world). Note that the key "rft_id" appears twice:

  1. rft_id=info:oclcnum/1903126
  2. rft_id=

$_GET will return just, the earlier value (info:oclcnum/1903126) having been overwritten.

I'd like to get access to both values. Is this possible in PHP? If not, any thoughts on how to handle this problem?



Something like:

$query  = explode('&', $_SERVER['QUERY_STRING']);
$params = array();

foreach( $query as $param )
  // prevent notice on explode() if $param has no '='
  if (strpos($param, '=') === false) $param += '=';

  list($name, $value) = explode('=', $param, 2);
  $params[urldecode($name)][] = urldecode($value);

gives you:

  'ctx_ver'     => array('Z39.88-2004'),
  'rft_id'      => array('info:oclcnum/1903126', ''),
  'rft_val_fmt' => array('info:ofi/fmt:kev:mtx:book'),
  'rft.genre'   => array('book'),
  'rft.btitle'  => array('At last: a Christmas in the West Indies.'),
  ''   => array('London'),
  ''     => array('Macmillan and co.'),
  'rft.aufirst' => array('Charles'),
  'rft.aulast'  => array('Kingsley'),
  ''      => array('Kingsley, Charles'),
  'rft.pages'   => array('1-352'),
  'rft.tpages'  => array('352'),
  ''    => array('1871')

Since it's always possible that one URL parameter is repeated, it's better to always have arrays, instead of only for those parameters where you anticipate them.

Tuesday, August 30, 2022

You try to assign a value with same your last value replace with the existing value.

for example :your URL look like,

so your $_GET['finished_product_name'] has value is pqr not abc.

If you can change the field name with include [], then PHP will create an array containing all of the matching values:[]=123&version[]=3&id[]=234&version[]=4

your URL example like,[]=abc&material_name[]=xxx&finished_product_name[]=pqr&material_name[]=yyy

your for loop is :

for ($i=0; $i < count($_POST['finished_product_name']); $i++ )
    $product =$_POST['finished_product_name'][$i];
    $material = $_POST['material_name'][$i];
    $quantity = $_POST'product_quantity'][$i]; 
Sunday, December 4, 2022
Only authorized users can answer the search term. Please sign in first, or register a free account.
Not the answer you're looking for? Browse other questions tagged :