Correction: I meant edit your CRON job script, as the path to the PHP binary needs to be in the script.
Also note that the method you are using is unnecessarily convoluted. Instead of calling bash to parse a shell script which only runs a shell script you can simply have your CRON job run the PHP script directly, i.e.
00 05 1 * * /path/to/php-cli /www/cli/admintools-dbrepair.php
where /path/to/php-cli is the path to the PHP CLI binary (NOT CGI/FastCGI!!!), a piece of information which as I said you can get from your host, the only people who will know what is as they are the ones who have set up your server and by definition know the path to wherever they have installed each PHP binary. This is not something we can possibly know since we did not set up that server.
Nicholas K. Dionysopoulos
Lead Developer and Director
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