(Perl) JSON: Array of Objects

Here we have a JSON object that contains an array, where each element in the array is a JSON object. This example demonstrates how to access the objects contained within an array.

{ 
  "employees":[
    {"firstName":"John", "lastName":"Doe"},
    {"firstName":"Anna", "lastName":"Smith"},
    {"firstName":"Peter","lastName":"Jones"}
  ]
}

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

$json = chilkat::CkJsonObject->new();

# This is the above JSON with whitespace chars removed (SPACE, TAB, CR, and LF chars).
# The presence of whitespace chars for pretty-printing makes no difference to the Load
# method. 
$jsonStr = "{\"employees\":[{\"firstName\":\"John\", \"lastName\":\"Doe\"},{\"firstName\":\"Anna\", \"lastName\":\"Smith\"},{\"firstName\":\"Peter\",\"lastName\":\"Jones\"}]}";

$success = $json->Load($jsonStr);
if ($success != 1) {
    print $json->lastErrorText() . "\r\n";
    exit;
}

# Get the "employees" array.
# employees is a JsonArray
$employees = $json->ArrayOf("employees");
if ($json->get_LastMethodSuccess() == 0) {
    print "employees member not found." . "\r\n";
    exit;
}

# Iterate over each employee, getting the JSON object at each index.
$numEmployees = $employees->get_Size();
$i = 0;
while ($i < $numEmployees) {

    # empObj is a JsonObject
    $empObj = $employees->ObjectAt($i);

    print "employee[" . $i . "] = " . $empObj->stringOf("firstName") . " " . $empObj->stringOf("lastName") . "\r\n";

    $i = $i + 1;
}