Arrays
Hashing
Strings
Encoding and Decoding^
Encryption
Regular Expressions
Perl-Compatible Regular Expressions
- MATHEMATICAL FUNCTIONS
Common Math
Random Numbers
Arbitrary-Precision Numbers - TIME, DATE, AND CONFIGURATION FUNCTIONS
Time and Date
Alternative Calendars
Configuration - IMAGE FUNCTIONS
Analyzing Images
Creating JPEG, PNG, and WBMP Images - DATABASE FUNCTIONS
dBase
DBM-style Database Abstraction
filePro
Informix
InterBase
mSQL
ODBC
Oracle
Postgres
Sybase - MISCELLANEOUS FUNCTIONS
Apache
Aspell
COM
Gettext
IMAP
Java
LDAP
Semaphores
Shared Memory
SNMP
WDDX
XML
III: ALGORITHMS
- SORTING, SEARCHING, AND RANDOM NUMBERS
Sorting
Bubble Sort