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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

books.php?type_lang=php_en doesn't exist. Closest matches:

ctype_alpha
ctype_graph
ctype_upper
ocicollappend
swoole_http_client
eio_sync_file_range
swoole_http_response
returntypewillchange
ibase_blob_open
ssh2_auth_agent
dbase_open
swoole_async_set
ibase_wait_event
stats_rand_gen_t
stats_rand_gen_f
ctype_print
ctype_space
mb_language
ctype_lower
ctype_punct
ctype_alnum
pg_put_line
inotify_queue_len
swoole_last_error
swoole_async_read
ibase_blob_cancel
ibase_gen_id
stripslashes
expect_popen
ps_hyphenate

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