- var_dump: documentation ( source)
- print_r: documentation ( source)
- var_export: documentation ( source)
- json_encode: documentation ( source)
<?php
var_dump(var_export(true, true));
var_dump(var_export(false, true));
var_dump(print_r(true, true));
var_dump(print_r(false, true));
var_dump(json_encode(true));
var_dump(json_encode(false));