<?php
class MyClass {
function __toString() {
return "\"key-$i\":\"$i\"";
}
}
echo new MyClass();
PD9waHAKCmNsYXNzIE15Q2xhc3MgewogIGZ1bmN0aW9uIF9fdG9TdHJpbmcoKSB7CiAgICByZXR1cm4gInsiIC4gaW1wbG9kZSgiLCIsIGFycmF5X21hcChmdW5jdGlvbiAoJGkpICB7CiAgICAgIHJldHVybiAiXCJrZXktJGlcIjpcIiRpXCIiOwogICAgfSwgYXJyYXlfa2V5cyhhcnJheV9maWxsKDAsIHJhbmQoMSwzMiksIDApKSkpIC4gIn0iOwogIH0KfQoKZWNobyBuZXcgTXlDbGFzcygpOw==