Hello,
php scripts are *not* executed from the command line in this way (unlike perl scripts).
You should call php interpreter with script name as parameter:
/usr/bin/php /home/pspwerel/public_html/sitemap/runcrawl.php
OR
/usr/local/bin/php /home/pspwerel/public_html/sitemap/runcrawl.php
(depending on where php is located in your case).