I am trying to do a clean install of D7 on an ArchLinux machine. This machine has all the latest updates installed.
PHP 5.3.5 is installed and working -- I can view the test.php page with no problems from a browser window.
When I try to run the D7 install.php script I get a blank screen. Checking the apache log, I find:
"PHP Fatal error: Call to undefined function json_encode() in /srv/http/drupal/includes/common.inc on line 4797."
According to the test.php output, json support is enabled in php and I can find the json.so library in the php installation.
Any ideas would be appreciated.