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reading standard input
2nd
reading to/writing from compressed files
standard error, reading from a program
standard output from a program, reading
writing output to many filehandles simultaneously
writing to standard output
INSERT command (SQL)
finding number of rows returned by query
inserting unique IDs into database
querying unique ID database
install command (PEAR)
instantiating objects
dynamically
instantiation, defined
new keyword, using
integers
0 (zero), as empty variable
converting floating-point numbers to
incrementing for unique ID sequence
initializing an array to range
on left side of comparisons
operating on a range of
rounding floating-point numbers to
Interbase DB backend
internal errors
internationalization
default locale, setting
listing available locales
locale, using
localization resources, managing
localizing currency values
localizing dates and times
localizing images
localizing included files
localizing text messages
message catalogs, handling with gettext
reading or writing Unicode characters
Internet services
DNS lookups
domain names, getting information about
LDAP
looking up addresses with
Internet Services
LDAP
user authentication with
Internet services
mail
[See also email; mail]
MIME
reading with IMAP or POP3
sending
ping program
checking if host is alive
posting messages to Usenet newsgroups
reading Usenet newsgroup messages
SOAP
receiving requests