Foreach loop through JSON object array

json-object-array-foreach-loop.php

<?php 

$json = '[
{
    "categories": "10,11",
    "title": "Promos",
    "columns": "col-md-3"
},
{
    "categories": "10,12",
    "title": "Instructional",
    "columns": "col-md-4"
},
{
    "categories": "10,13",
    "title": "Performance",
    "columns": "col-md-4 col-lg-3"
}
]';
$queries = json_decode($json);

var_dump($json);
// string(266) "[ { "categories": "10,11", "title": "Promos", "columns": "col-md-3" }, { "categories": "10,12", "title": "Instructional", "columns": "col-md-4" }, { "categories": "10,13", "title": "Performance", "columns": "col-md-4 col-lg-3" } ]" 
echo "<br><br>";

var_dump($queries);
// array(3) { [0]=> object(stdClass)#1 (3) { ["categories"]=> string(5) "10,11" ["title"]=> string(6) "Promos" ["columns"]=> string(8) "col-md-3" } [1]=> object(stdClass)#2 (3) { ["categories"]=> string(5) "10,12" ["title"]=> string(13) "Instructional" ["columns"]=> string(8) "col-md-4" } [2]=> object(stdClass)#3 (3) { ["categories"]=> string(5) "10,13" ["title"]=> string(11) "Performance" ["columns"]=> string(17) "col-md-4 col-lg-3" } }
echo "<br><br>";

//Example foreach
foreach($queries as $query){
  // this is where your WP query_posts( $args ); will go

  // this is how you'll access the array variables
  echo "<br>Query: ";
  echo $query->categories;
  echo ",  ";
  echo $query->title;
  echo ",  ";
  echo $query->columns;
  echo "<br>";
}

/*
Query: 10,11, Promos, col-md-3

Query: 10,12, Instructional, col-md-4

Query: 10,13, Performance, col-md-4 col-lg-3
*/