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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

ajax/ajax_back.php doesn't exist. Closest matches:

ibase_backup
uopz_backup
fbird_backup
array_search
ibase_rollback
array_map
array_pop
stream_bucket_append
fann_set_cascade_max_cand_epochs
fann_get_cascade_max_cand_epochs
stream_bucket_prepend
array_push
array_walk
yaz_search
variant_cmp
parle_stack
array_chunk
fann_set_callback
ldap_modify_batch
ibase_rollback_ret
realpath_cache_get
oci_rollback
db2_rollback
fann_get_cascade_max_out_epochs
fann_set_cascade_max_out_epochs
realpath_cache_size
array_replace
mqseries_back
odbc_rollback
imagecolorexactalpha

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