PHP PayPal REST API: display item descriptions if applicable -

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i have below create payment paypal script, wanted of items variations able set setdescription(); if any,

currently items show same description (variations) below script:

foreach($_session['products'] $key => $cart_itm) {      $keys = array_keys($cart_itm);     $matches = preg_grep('~^p_alt\-variation\-\d+~i', $keys);     //show variations if     if(count($matches) > 1) {         foreach($matches $matched_key) {             $variations[] = $cart_itm[$matched_key];         }     }      $subtotal = $cart_itm['p_price'] * $cart_itm['p_qty'];      $item[$key] = new item();     $item[$key]->setname($cart_itm['p_name'])             ->setcurrency(paypal_currency)             ->setquantity($cart_itm['p_qty'])             ->setdescription(implode(' / ', $variations))             ->setprice($cart_itm['p_price']);      $items[] = $item[$key];     $customdata[] = $cart_itm['p_id'].':'.$cart_itm['p_qty'];  }

print_r($_session['products']);

array     (         [0] => array             (                 [p_name] => motorbike helmet g88                 [p_code] => 2102649                 [p_coverimg] => 12-1466446199-wi5qx.png                 [p_id] => 12                 [p_price] => 68.00                 [p_alt-variation-1] => blue                 [p_alt-variation-2] => xl                 [p_qty] => 1             )          [1] => array             (                 [p_name] => digital ph meter                 [p_code] => 14171613                 [p_coverimg] => 4-1460428321-i1pny.jpg                 [p_id] => 4                 [p_price] => 31.00                 [p_qty] => 2             )      )

how pass items variations ->setdescription() if available?


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