<?php
$result = '{
"yield_data": [
  {
   "name": "Sri Lanka 3M",
   "value": "7.760"
  },
  {
   "name": "Sri Lanka 6M",
   "value": "8.500"
  },
  {
   "name": "Sri Lanka 1Y",
   "value": "9.054"
  },
  {
   "name": "Sri Lanka 2Y",
   "value": "9.283"
  },
  {
   "name": "Sri Lanka 3Y",
   "value": "9.588"
  },
  {
   "name": "Sri Lanka 4Y",
   "value": "9.850"
  },
  {
   "name": "Sri Lanka 5Y",
   "value": "10.000"
  },
  {
   "name": "Sri Lanka 6Y",
   "value": "10.100"
  },
  {
   "name": "Sri Lanka 7Y",
   "value": "10.150"
  },
  {
   "name": "Sri Lanka 8Y",
   "value": "10.200"
  },
  {
   "name": "Sri Lanka 9Y",
   "value": "10.250"
  },
  {
   "name": "Sri Lanka 10Y",
   "value": "10.300"
  },
  {
   "name": "Sri Lanka 15Y",
   "value": "10.575"
  }
 ]
}';
$arr = json_decode($result, true);
 foreach($arr['yield_data'] as $item) { 
   $name = $item['name'];
   $value = $item['value'];
   echo $name.' '.$value;
 } 
?>