bash: split words into line

Expamle #1

php -m | grep memecache

phpline="memcache wddx apcu mcrypt geoip"
for word in $phpline; do php -m | grep  $word; done

Expamle #2

cat dev1820.mango-office.ru.conf | grep mbstring

tempfiles="site-dev-loyalty-node1.as.ru.mgo.su.conf site-dev-node1.as.ru.mgo.su.conf site-doc.as.ru.mgo.su.conf site-learning-node1.as.ru.mgo.su.conf site-pres-node1.as.ru.mgo.su.conf site-temp-agent-node1.as.ru.mgo.su.conf site-temp-loyalty-node1.as.ru.mgo.su.conf site-temp-node1.as.ru.mgo.su.conf site-test-node1.as.ru.mgo.su.conf"
for word in $tempfiles; do cat $word | grep mbstring; done