Returns a string containing the version of the currently running PHP parser.

If you are running Netscape Enterprise 4.x, then you should use the following

Returns an indexed array containing the name of all stream filters available on the running system.

Returns an indexed array containing the name of all stream wrappers available on the running system.

To connect to an IMAP server running on port 143 on the local machine, do the following

Enable the security check for internal server redirects. You should use this if you are running the CGI version with Apache.

Above function call would return all the SNMP objects from the SNMP agent running on localhost. One can step through the values with a loop

Run time notices. Indicate that the script encountered something that could indicate an error, but could also happen in the normal course of running a script.

The temporary directory used for storing files when doing file upload. Must be writable by whatever user PHP is running as. If not specified PHP will use the system's default.

The font file format is currently binary and architecture dependent. This means you should generate the font files on the same type of CPU as the machine you are running PHP on.

蛁 If you start a program using this function and want to leave it running in the background, you have to make sure that the output of that program is redirected to a file or some other output stream or else PHP will hang until the execution of the program ends.

The default is to build PHP as a CGI program. This creates a commandline interpreter, which can be used for CGI processing, or for non web related PHP scripting. If you are running a web server PHP has module support for, you should generally go for that solution for performance reasons. However, the CGI version enables Apache users to run different PHP enabled pages under different user ids. Please make sure you read through the Security chapter if you are going to run PHP as a CGI.