Possible Duplicate:
php regular expression help?

hi, i want karşı replace

i like apple
apple is good
orange is also nice
my mom likes banana
apple 123 4
the pear is soo sweat
my dad loves pear

karşı

i like apple
apple is good
orange is also nice
my mom likes banana
apple 1
apple 2
apple 3
apple 4
the pear is soo sweat
my dad loves pear

preg_replace ile?