update page now
Downloads
Documentation
Get Involved
Help
Search docs
International PHP Conference Berlin 2026
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
PHP Function List
shared-https-www.php.net/manual/en/ref.filter.php
doesn't exist. Closest matches:
php_user_filter
stream_wrapper_unregister
stream_filter_append
php_ini_scanned_files
stream_filter_prepend
hash_update_file
stream_set_read_buffer
stream_register_wrapper
stream_wrapper_register
stats_standard_deviation
stream_get_filters
hrtime_performancecounter
solrmissingmandatoryparameterexception
restore_include_path
hash_hmac_file
stream_socket_enable_crypto
recursivetreeiterator
curlsharehandle
stream_bucket_make_writeable
swoole_async_writefile
seekableiterator
syncreaderwriter
sapi_windows_set_ctrl_handler
ps_get_parameter
ps_set_parameter
cubrid_set_db_parameter
recursivefilteriterator
stats_rand_gen_funiform
pspell_config_save_repl
stream_set_write_buffer
↑
and
↓
to navigate •
Enter
to select •
Esc
to close •
/
to open
Press
Enter
without selection to search using Google