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If you are new to PHP or just need to refresh your skills, this is the place to start. This series of tutorials will give you the basic knowledge you will need to create a simple PHP website.
PHP is a reflective programming language originally designed for producing dynamic web pages.[1] PHP is used mainly in server-side scripting, but can be used from a command line interface or in standalone graphical applications. Textual User Interfaces can also be created using ncurses.
posix_mkfifo() creates a special FIFO file which exists in the file system and acts as a bidirectional communication endpoint for processes.
pathnamePath to the FIFO file.
mode
The second parameter mode has to be given in
octal notation (e.g. 0644). The permission of the newly created
FIFO also depends on the setting of the current
umask(). The permissions of the created file are
(mode & ~umask).
Note: When safe mode is enabled, PHP checks whether the files or directories you are about to operate on have the same UID (owner) as the script that is being executed.
Another Useful functions:
ref.posix | function.posix-uname | function.posix-ttyname | function.posix-times | function.posix-strerror | function.posix-setuid | function.posix-setsid | function.posix-setpgid | function.posix-setgid | function.posix-seteuid | function.posix-setegid | function.posix-mknod | function.posix-mkfifo | function.posix-kill | function.posix-isatty | function.posix-getuid | function.posix-getsid | function.posix-getrlimit | function.posix-getpwuid | function.posix-getpwnam | function.posix-getppid | function.posix-getpid | function.posix-getpgrp | function.posix-getpgid | function.posix-getlogin | function.posix-getgroups | function.posix-getgrnam | function.posix-getgrgid | function.posix-getgid | function.posix-geteuid | function.posix-getegid | function.posix-getcwd | function.posix-get-last-error | function.posix-ctermid | function.posix-access |
PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML. If you are new to PHP and want to get some idea of how it works, try the introductory tutorial. After that, check out the online manual, and the example archive sites and some of the other resources available in the links section.