Arrays

• array
• array_change_key_case
• array_chunk
• array_combine
• array_count_values
• array_diff
• array_diff_assoc
• array_diff_key
• array_diff_uassoc
• array_diff_ukey
• array_fill
• array_fill_keys
• array_filter
• array_flip
• array_intersect
• array_intersect_assoc
• array_intersect_key
• array_intersect_uassoc
• array_intersect_ukey
• array_key_exists
• array_keys
• array_map
• array_merge
• array_merge_recursive
• array_multisort
• array_pad
• array_pop
• array_product
• array_push
• array_rand
• array_reduce
• array_replace
• array_replace_recursive
• array_reverse
• array_search
• array_shift
• array_slice
• array_splice
• array_sum
• array_udiff
• array_udiff_assoc
• array_udiff_uassoc
• array_uintersect
• array_uintersect_assoc
• array_uintersect_uassoc
• array_unique
• array_unshift
• array_values
• array_walk
• array_walk_recursive
• arsort
• asort
• compact
• count
• current
• each
• end
• extract
• in_array
• key
• krsort
• ksort
• natcasesort
• natsort
• next
• pos
• prev
• range
• reset
• rsort
• shuffle
• sizeof
• sort
• uasort
• uksort
• usort

BCMath Arbitrary Precision Mathematics

• bcadd
• bccomp
• bcdiv
• bcmul
• bcround
• bcscale
• bcsub

Character type checking

• ctype_alnum
• ctype_alpha
• ctype_cntrl
• ctype_digit
• ctype_graph
• ctype_lower
• ctype_print
• ctype_punct
• ctype_space
• ctype_upper
• ctype_xdigit

Class/Object Information

• class_alias
• class_exists
• get_class
• get_class_methods
• get_class_vars
• get_declared_classes
• get_object_vars
• method_exists
• property_exists

Classkit

• classkit_import
• classkit_method_add
• classkit_method_copy
• classkit_method_redefine
• classkit_method_remove
• classkit_method_rename

Date and Time

• checkdate
• date
• date_default_timezone_get
• date_default_timezone_set
• date_parse
• getdate
• gettimeofday
• gmdate
• gmmktime
• gmstrftime
• idate
• localtime
• microtime
• mktime
• strftime
• strptime
• strtotime
• time
• timezone_abbreviations_list
• timezone_identifiers_list

Error Handling and Logging

• error_get_last
• error_reporting
• trigger_error
• user_error

Filesystem

• basename
• dirname
• fclose
• feof
• fgetc
• fgetcsv
• fgets
• fgetss
• file
• file_exists
• file_get_contents
• filemtime
• filesize
• fopen
• fpassthru
• fread
• fscanf
• fseek
• ftell
• pathinfo
• pclose
• popen
• readfile
• realpath
• rewind

Function Handling

• call_user_func
• call_user_func_array
• create_function
• forward_static_call
• forward_static_call_array
• func_get_arg
• func_get_args
• func_num_args
• function_exists
• get_defined_functions
• register_shutdown_function

JavaScript Object Notation

• json_decode
• json_encode
• json_last_error

Language & Control Structures

• include
• include_once
• require
• require_once

Mail

• mail

Mathematical Functions

• abs
• acos
• acosh
• asin
• asinh
• atan
• atan2
• atanh
• base_convert
• bindec
• ceil
• cos
• cosh
• decbin
• dechex
• decoct
• deg2rad
• exp
• expm1
• floor
• fmod
• getrandmax
• hexdec
• hypot
• is_finite
• is_infinite
• is_nan
• lcg_value
• log
• log10
• log1p
• max
• min
• mt_getrandmax
• mt_rand
• octdec
• pi
• pow
• rad2deg
• rand
• round
• sin
• sinh
• sqrt
• tan
• tanh

Miscellaneous Functions

• constant
• define
• defined
• pack
• php_strip_whitespace
• time_sleep_until
• uniqid

Net Gopher

• gopher_parsedir

Network

• inet_ntop
• inet_pton
• ip2long
• long2ip
• setcookie
• setrawcookie

Object Aggregation/Composition

• aggregate
• aggregate_info
• aggregate_methods
• aggregate_methods_by_list
• aggregate_methods_by_regexp
• aggregate_properties
• aggregate_properties_by_list
• aggregate_properties_by_regexp
• aggregation_info
• deaggregate

Output Buffering Control

• ob_clean
• ob_end_clean
• ob_end_flush
• ob_flush
• ob_get_clean
• ob_get_contents
• ob_get_flush
• ob_get_length
• ob_get_level
• ob_get_status
• ob_list_handlers
• ob_start

PHP Options and Information

• assert
• assert_options
• get_cfg_var
• get_defined_constants
• get_extension_funcs
• get_include_path
• get_included_files
• get_required_files
• getenv
• getlastmod
• ini_alter
• ini_get
• ini_get_all
• ini_restore
• ini_set
• php_ini_loaded_file
• php_ini_scanned_files
• phpversion
• putenv
• restore_include_path
• set_include_path
• set_time_limit
• version_compare

Program execution Functions

• escapeshellarg

Regular Expressions (Perl-Compatible)

• preg_grep
• preg_quote
• sql_regcase

Streams

• stream_context_create
• stream_context_get_default
• stream_context_get_options
• stream_context_get_params
• stream_context_set_default
• stream_context_set_option
• stream_context_set_params
• stream_get_contents
• stream_get_line
• stream_is_local

Strings

• addcslashes
• addslashes
• bin2hex
• chop
• chr
• chunk_split
• convert_cyr_string
• convert_uuencode
• count_chars
• crc32
• echo
• explode
• get_html_translation_table
• html_entity_decode
• htmlentities
• htmlspecialchars
• htmlspecialchars_decode
• implode
• join
• lcfirst
• levenshtein
• localeconv
• ltrim
• md5
• md5_file
• metaphone
• money_format
• nl2br
• nl_langinfo
• number_format
• ord
• parse_str
• printf
• quoted_printable_decode
• quoted_printable_encode
• quotemeta
• rtrim
• setlocale
• sha1
• sha1_file
• similar_text
• soundex
• split
• sprintf
• sscanf
• str_getcsv
• str_ireplace
• str_pad
• str_repeat
• str_replace
• str_rot13
• str_shuffle
• str_split
• str_word_count
• strcasecmp
• strchr
• strcmp
• strcoll
• strcspn
• strip_tags
• stripos
• stripslashes
• stristr
• strlen
• strnatcasecmp
• strnatcmp
• strncasecmp
• strncmp
• strpbrk
• strpos
• strrchr
• strrev
• strripos
• strrpos
• strspn
• strstr
• strtok
• strtolower
• strtoupper
• strtr
• substr
• substr_compare
• substr_count
• substr_replace
• trim
• ucfirst
• ucwords
• vprintf
• vsprintf
• wordwrap

URLs

• base64_decode
• base64_encode
• get_headers
• get_meta_tags
• http_build_query
• parse_url
• rawurldecode
• rawurlencode
• urldecode
• urlencode

Variable handling

• doubleval
• empty
• floatval
• get_defined_vars
• get_resource_type
• gettype
• import_request_variables
• intval
• is_array
• is_binary
• is_bool
• is_buffer
• is_callable
• is_double
• is_float
• is_int
• is_integer
• is_long
• is_null
• is_numeric
• is_object
• is_real
• is_resource
• is_scalar
• is_string
• is_unicode
• isset
• print_r
• serialize
• settype
• strval
• unserialize
• var_dump
• var_export

XML Parser

• utf8_decode
• utf8_encode

[internal] php.js shared libs

i18n

• i18n_loc_get_default
• i18n_loc_set_default

runkit

• runkit_class_adopt
• runkit_class_emancipate
• runkit_function_add
• runkit_function_copy
• runkit_function_redefine
• runkit_function_remove
• runkit_function_rename
• runkit_import
• runkit_method_add
• runkit_method_copy
• runkit_method_redefine
• runkit_method_remove
• runkit_method_rename
• runkit_superglobals

xdiff

• xdiff_string_diff
• xdiff_string_patch