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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
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PHP Function List
http:/nl3.php.net/substr
doesn't exist. Closest matches:
grapheme_substr
mb_http_input
eventhttprequest
substr
iconv_substr
openssl_csr_get_subject
imap_getsubscribed
oauth_get_sbs
eventhttpconnection
imap_listsubscribed
swoole_http_request
pspell_suggest
php_incomplete_class
pcntl_get_last_error
ftp_nlist
mb_substr
fann_get_errstr
ldap_next_entry
trader_cdl3linestrike
splsubject
imap_unsubscribe
fann_subset_train_data
date_sunset
ftp_connect
ldap_result
ldap_result_entry
fann_reset_errstr
ldap_parse_result
openssl_pkey_get_public
htmlentities
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