Accessing Array within JSON Operator Array - php

Question

I'm trying to access the "Climate" key. I can access all items outside of the "UnitFeatures" operator.
"Location": {
"Units": [
{
"BonusComments": "THIS IS A BONUS DEAL",
"CubicFootage": 125,
"OrderGrouping": "0000001CONTAINER",
"SquareFootage": 25,
"TotalUnits": 45,
"UnitFeature": {
"Access": "",
"Climate": "NON-CLIMATE",
"Doors": "",
"Elevation": "OUTSIDE",
"Floor": "1",
"Product": "CONTAINER"
},
},
]
}
I have been able to access using associative arrays. I also have a for loop that will output the information into a table.
$temp = "<table cellpadding='5px'>";
$temp .= "<tr><th>Unit Size</th>";
$temp .= "<th>Comments</th>";
$temp .= "<th>Unit Sq. Footage</th>";
$temp .= "<th>Units Available</th>";
$temp .= "<th>Monthly Rent</th></tr>";
for($i = 0; $i < sizeof($units) ; $i++) {
if($units[$i]["SquareFootage"]<=100) {
$temp .= "<tr>";
$temp .= "<td id='row'>" . $units[$i]["UnitSize"] . "</td>";
$temp .= "<td id='row'>" . $units[$i]["UnitFeature"]["Climate"] . "</td>";
$temp .= "<td id='row'>" . $units[$i]["SquareFootage"] . "</td>";
$temp .= "<td id='row'>" . $units[$i]["VacantUnits"] . "</td>";
$temp .= "<td id='row'>$" .$units[$i]['Monthly'] . ".00</td>";
$temp .= "</tr>";
}
}
$temp .= "</table>";
echo $temp;
I have tried the line that contains: $units[$i]["UnitFeature"]["Climate"] in every possible configuration.
The output should be either "Non-Climate" or "Climate".

Answer 1

After looking at the API documentation, it appears that the UnitFeature object is optional, and may be null. So the code needs to test for this:
foreach ($units as $u) {
if($u["SquareFootage"]<=100) {
$temp .= "<tr>";
$temp .= "<td id='row'>" . $u["UnitSize"] . "</td>";
if (isset($u["UnitFeature"]["Climate"])) {
$temp .= "<td id='row'>" . $u["UnitFeature"]["Climate"] . "</td>";
} else {
$temp .= "<td id='row'></td>";
}
$temp .= "<td id='row'>" . $u["SquareFootage"] . "</td>";
$temp .= "<td id='row'>" . $u["VacantUnits"] . "</td>";
$temp .= "<td id='row'>$" .$u['Monthly'] . ".00</td>";
$temp .= "</tr>";
}
}

Answer 2

I tried your json to decode with json_decode and it won't. Because it returns Syntax Error. You can check it with json_last_error_msg(). Also I removed some " , " from your json string. You can validate your json string at jsonlint. And now it's working.
<?php
$jsonString = '{"Location" : {
"Units" : [
{
"BonusComments": "THIS IS A BONUS DEAL",
"CubicFootage": 125,
"OrderGrouping": "0000001CONTAINER",
"SquareFootage": 25,
"TotalUnits": 45,
"UnitFeature": {
"Access": "",
"Climate": "NON-CLIMATE",
"Doors": "",
"Elevation": "OUTSIDE",
"Floor": "1",
"Product": "CONTAINER"
}
}
]
}}';
$jsonType = json_decode($jsonString);
foreach ($jsonType->Location->Units as $key => $value) {
echo "KEY : ". $key."<br/>";
echo $value->UnitFeature->Climate;
}
?>