Downloads
Documentation
Get Involved
Help
Search docs
PHP 8.4.2 Released!
Getting Started
Introduction
A simple tutorial
Language Reference
Basic syntax
Types
Variables
Constants
Expressions
Operators
Control Structures
Functions
Classes and Objects
Namespaces
Enumerations
Errors
Exceptions
Fibers
Generators
Attributes
References Explained
Predefined Variables
Predefined Exceptions
Predefined Interfaces and Classes
Predefined Attributes
Context options and parameters
Supported Protocols and Wrappers
Security
Introduction
General considerations
Installed as CGI binary
Installed as an Apache module
Session Security
Filesystem Security
Database Security
Error Reporting
User Submitted Data
Hiding PHP
Keeping Current
Features
HTTP authentication with PHP
Cookies
Sessions
Handling file uploads
Using remote files
Connection handling
Persistent Database Connections
Command line usage
Garbage Collection
DTrace Dynamic Tracing
Function Reference
Affecting PHP's Behaviour
Audio Formats Manipulation
Authentication Services
Command Line Specific Extensions
Compression and Archive Extensions
Cryptography Extensions
Database Extensions
Date and Time Related Extensions
File System Related Extensions
Human Language and Character Encoding Support
Image Processing and Generation
Mail Related Extensions
Mathematical Extensions
Non-Text MIME Output
Process Control Extensions
Other Basic Extensions
Other Services
Search Engine Extensions
Server Specific Extensions
Session Extensions
Text Processing
Variable and Type Related Extensions
Web Services
Windows Only Extensions
XML Manipulation
GUI Extensions
Keyboard Shortcuts
?
This help
j
Next menu item
k
Previous menu item
g p
Previous man page
g n
Next man page
G
Scroll to bottom
g g
Scroll to top
g h
Goto homepage
g s
Goto search
(current page)
/
Focus search box
rrd_create »
« OOP PECL/rrd example
PHP-Handbuch
Funktionsreferenz
Sonstige Dienste
RRD
Change language:
English
German
Spanish
French
Italian
Japanese
Brazilian Portuguese
Russian
Turkish
Ukrainian
Chinese (Simplified)
Other
RRD Funktionen
Inhaltsverzeichnis
rrd_create
— Creates rrd database file
rrd_error
— Gets latest error message
rrd_fetch
— Fetch the data for graph as array
rrd_first
— Gets the timestamp of the first sample from rrd file
rrd_graph
— Creates image from a data
rrd_info
— Gets information about rrd file
rrd_last
— Gets unix timestamp of the last sample
rrd_lastupdate
— Gets information about last updated data
rrd_restore
— Restores the RRD file from XML dump
rrd_tune
— Tunes some RRD database file header options
rrd_update
— Updates the RRD database
rrd_version
— Gets information about underlying rrdtool library
rrd_xport
— Exports the information about RRD database
rrdc_disconnect
— Close any outstanding connection to rrd caching daemon
Found A Problem?
Learn How To Improve This Page
•
Submit a Pull Request
•
Report a Bug
+
add a note
User Contributed Notes
There are no user contributed notes for this page.
↑
and
↓
to navigate •
Enter
to select •
Esc
to close
Press
Enter
without selection to search using Google