A or an

I've seen a fair number of CVS commits going through to correct sentences where it's supposed to be an instead of a (and possibly vice-versa) so I made a small script and found this: -> phpdoc/en/reference/classobj/reference.xml a object 412800 -> phpdoc/en/reference/ctype/functions/ctype-upper.xml a uppercase 26870 -> phpdoc/en/reference/dbplus/functions/dbplus-getunique.xml a id -8000 -> phpdoc/en/reference/ifx/functions/ifx-prepare.xml a integer 326100 -> phpdoc/en/reference/ifx/functions/ifxus-write-slob.xml a existing 459200 -> phpdoc/en/reference/ldap/functions/ldap-search.xml a optional 438100 -> phpdoc/en/reference/mbstring/functions/mb-detect-order.xml a invalid 274700 -> phpdoc/en/reference/pgsql/functions/pg-query.xml a optional 438100 English isn't my mother tongue, and I'm not a doc member so I decided to leave it to you to correct those files which needs correction. (The number right after the word is the number of hits difference between a <word> and an <word> on Google). Hope this helps, Jome