- json_encode: documentation ( source)
<?php
$name= "xxx";
$title= "xxx";
$arrayGender = array("Boy","Girl");
$arrayName = array("John", "Rosy");
$obj = new stdClass;
$obj->name = $name;
$obj->title = $title;
$obj->children = [$arrayGender, $arrayName];
echo json_encode($obj);