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PHP 8.1.34 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

php/phptryit.asp?filename=tryphp_datatypes_null doesn't exist. Closest matches:

ibase_name_result
reflectionnamedtype
pg_parameter_status
stream_filter_append
radius_salt_encrypt_attr
fann_set_rprop_delta_min
fann_get_rprop_delta_min
stream_get_meta_data
pg_transaction_status
stream_filter_prepend
pg_field_is_null
enchant_dict_add_to_personal
fbird_name_result
oci_field_is_null
openal_buffer_data
fann_set_rprop_delta_max
fann_get_rprop_delta_max
phpdbg_break_method
stream_isatty
fann_set_rprop_delta_zero
fann_get_rprop_delta_zero
stream_get_wrappers
ssdeep_fuzzy_hash_filename
geoip_country_name_by_name
imagefilledrectangle
stream_bucket_append
stream_socket_enable_crypto
fann_merge_train_data
sqlsrv_field_metadata
xhprof_sample_disable

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