I thought that the json extensions where in >=PHP5.2. Here's my example file and the output. What's up? Do I need to install something else. file: <?php echo "PHP version: ", phpversion(), "<br/>"; if (function_exists('json_encode')) echo "json_encode() exists"; else echo "json_encode() doesn't exist"; ?> output: PHP version: 5.2.5 json_encode() doesn't exist