The last of the Built-in Functions! String Functions  The functions I will add here only scratch the surface of PHP’s built-in string manipulation functions, but if you understand thses common…

Session-Handling Functions Session handling is a way of holding on to data as a user navigates your Web Site. Data can be variables or entire objects. session_start() The session_start() function…

Regular Expression Functions  ereg_replace() and eregi_replace()  The ereg_replace() and eregi_replace() functions replace instances of a pattern within a string and return the new string. The ereg_replace() function performs a clase-sensitive…

Program Execution Functions  You can use PHP’s built in program execution functions to use programs residing on your system, such as encryption programs, third-party image manipulation programs, and so forth….

Misc. Functions  The die() and exit functions provide useful control over the execution of your script, offereing an ‘escape route’ for programming errors. die()  Outputs a given message and terminates…

Here are yet more Built-in Functions, Mail Function  If your server has access to sendmail or an SNMP gateway the mail() function sends mail to a specified recipient. Its syntax…

Today in Buit-in Funtions we will look at some HTTP functions. header()  The header() function outputs an HTTP header string, such as a location redirection. This output must occur before…

Welcome back to Built-in Functions. Filesytem Functions chmod(), chgrp(), chown() Like the shell commands of the same name, the chmod(), chgrp(), and chown() functions modify the permissions, grop and owner…

Today we will look at some Date and Time functions. date()  The date() function returns the current server timestamp, formatted according to to a given set of parameters. Its syntax…

Welcome back to the not so exciting built in functions part 3! Today we will deal with Database Connectivity Functions for MySQL. *Numerous PHP functions exist for connecting  to adn querying…