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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

showcase/site-of-the-day/9658/04 doesn't exist. Closest matches:

curlsharepersistenthandle
socket_export_stream
gettimeofday
socket_getpeername
socket_setopt
escapeshellcmd
ocisetprefetch
escapeshellarg
ociwritetemporarylob
socket_import_stream
sodium_crypto_sign_detached
swoole_async_writefile
oci_set_prefetch
sodium_crypto_sign_verify_detached
stream_set_write_buffer
ociwritelobtofile
socket_get_status
ocicollassignelem
socket_last_error
socket_set_option
pg_escape_literal
curl_share_setopt
curl_setopt_array
get_class_methods
shmop_write
socket_read
easter_days
show_source
natcasesort
socket_set_timeout

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