update page now

Downloads
Documentation
Get Involved
Help

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

opcache.opt_debug_level doesn't exist. Closest matches:

memcache_debug
opcache_reset
get_debug_type
apache_get_modules
phpdbg_exec
ob_get_level
phpdbg_clear
opcache_compile_file
apache_setenv
geoip_db_filename
apache_getenv
wincache_ucache_delete
opcache_get_status
opcache_invalidate
geoip_db_avail
oci_set_module_name
apcu_delete
imap_delete
ldap_delete
uopz_delete
opcache_is_script_cached
phpdbg_end_oplog
phpdbg_color
shmop_delete
wincache_ucache_clear
phpdbg_break_file
phpdbg_break_next
header_remove
imap_undelete
oci_internal_debug

Full website search

Copyright © 2001-2026 The PHP Group
My PHP.net
Contact
Other PHP.net sites
Privacy policy
View Source

↑ and ↓ to navigate • Enter to select • Esc to close • / to open

Press Enter without selection to search using Google