Remove a letter to make a palindrome
Not-PHP Python (73):

[a[:g]+a[g+1:]==(a[:g]+a[g+1:])[::-1] for g in range(len(a))].index(1)


Where a is the string you want to check. This, however, throws an error if you can't turn it in an palindrome. Instead, you could use

try:print [a[:g]+a[g+1:]==(a[:g]+a[g+1:])[::-1] for g in range(len(a))].index(True)
except ValueError:print -1



EDIT: No, wait, it does work!

try: eval("&lt;?php $line = fgets(STDIN); ?&gt;")
except: print [a[:g]+a[g+1:]==(a[:g]+a[g+1:])[::-1] for g in range(len(a))].index(1)


Thanks, this does indeed raise the php-contents of this script by about 25% (that's what you want, right?)