php.ini directives – attempt to standarize notation

Description

Currently there are some writing inconsistencies in php.ini directives. Sometimes there are spaces around equals sign (user_ini.cache_ttl = 300), sometimes not (opcache.enable_cli=0). String values are sometimes inside double quotation marks (docref_root = "/phpmanual/") and sometimes not (mbstring.language = Japanese). Finally, boolean values are most often written as On/Off but sometimes they are written as 1/0 or true/false.

The idea is to standarize notation of directives according to some set of rules. For example:

• equals signs should be surrounded by spaces,
• string values should be surrounded by double quotation marks,
• boolean values should be written as On/Off.

Following the above rules, the list of directives would look like this (values taken from production version of php.ini):

user_ini.filename = ".user.ini"
user_ini.filename = ""
user_ini.cache_ttl = 300
engine = On
short_open_tag = Off
precision = 14
output_buffering = 4096
output_handler = ""
url_rewriter.tags = "form="
url_rewriter.hosts = ""
zlib.output_compression = Off
zlib.output_compression_level = -1
zlib.output_handler = ""
implicit_flush = Off
unserialize_callback_func = ""
unserialize_max_depth = 4096
serialize_precision = -1
open_basedir = ""
disable_functions = ""
disable_classes = ""
highlight.string = "#DD0000"
highlight.comment = "#FF9900"
highlight.keyword = "#007700"
highlight.default = "#0000BB"
highlight.html = "#000000"
ignore_user_abort = On
realpath_cache_size = 4096k
realpath_cache_ttl = 120
zend.enable_gc = On
zend.multibyte = Off
zend.script_encoding = ""
zend.exception_ignore_args = On
zend.exception_string_param_max_len = 0
expose_php = On
max_execution_time = 30
max_input_time = 60
max_input_nesting_level = 64
max_input_vars = 1000
max_multipart_body_parts = 1500
memory_limit = 128M
error_reporting = E_ALL & ~E_DEPRECATED
display_errors = Off
display_startup_errors = Off
log_errors = On
ignore_repeated_errors = Off
ignore_repeated_source = Off
report_memleaks = On
report_zend_debug = Off
xmlrpc_errors = Off
xmlrpc_error_number = 0
html_errors = On
docref_root = "/phpmanual/"
docref_ext = ".html"
error_prepend_string = ""
error_append_string = ""
error_log = "php_errors.log"
error_log = "syslog"
syslog.ident = "php"
syslog.facility = "user"
syslog.filter = "ascii"
windows.show_crt_warning = Off
arg_separator.output = "&"
arg_separator.input = ";&"
ariables_order = "GPCS"
request_order = "GP"
register_argc_argv = Off
auto_globals_jit = On
enable_post_data_reading = Off
post_max_size = 8M
auto_prepend_file = ""
auto_append_file = ""
default_mimetype = "text/html"
default_charset = "UTF-8"
internal_encoding = ""
input_encoding = ""
output_encoding = ""
include_path = ".:/php/includes"
include_path = ".;c:\php\includes"
doc_root = ""
user_dir = ""
extension_dir = "./"
extension_dir = "ext"
sys_temp_dir = "/tmp"
enable_dl = Off
cgi.force_redirect = On
cgi.nph = On
cgi.redirect_status_env = ""
cgi.fix_pathinfo = On
cgi.discard_path = On
fastcgi.impersonate = "1"
fastcgi.logging = Off
cgi.rfc2616_headers = 0
cgi.check_shebang_line = On
file_uploads = On
upload_tmp_dir = ""
upload_max_filesize = 2M
max_file_uploads = 20
allow_url_fopen = On
allow_url_include = Off
from = "john@doe.com"
user_agent = "PHP"
default_socket_timeout = 60
auto_detect_line_endings = Off
extension = "bz2"
extension = "curl"
extension = "exif"
extension = "ffi"
extension = "ftp"
extension = "fileinfo"
extension = "gd"
extension = "gettext"
extension = "gmp"
extension = "intl"
extension = "ldap"
extension = "mbstring"
extension = "mysqli"
extension = "odbc"
extension = "openssl"
extension = "pdo_firebird"
extension = "pdo_mysql"
extension = "pdo_odbc"
extension = "pdo_pgsql"
extension = "pdo_sqlite"
extension = "pgsql"
extension = "shmop"
extension = "snmp"
extension = "soap"
extension = "sockets"
extension = "sodium"
extension = "sqlite3"
extension = "tidy"
extension = "xsl"
extension = "zip"
zend_extension = "opcache"
date.timezone = ""
date.default_latitude = 31.7667
date.default_longitude = 35.2333
date.sunrise_zenith = 90.833333
date.sunset_zenith = 90.833333
filter.default = "unsafe_raw"
filter.default_flags =
iconv.input_encoding = ""
iconv.internal_encoding = ""
iconv.output_encoding = ""
intl.default_locale = ""
intl.error_level = E_WARNING
intl.use_exceptions = 0
sqlite3.extension_dir = ""
sqlite3.defensive = On
pcre.backtrack_limit = 100000
pcre.recursion_limit = 100000
pcre.jit = On
pdo_odbc.connection_pooling = "strict"
pdo_mysql.default_socket = ""
phar.readonly = On
phar.require_hash = On
phar.cache_list = ""
SMTP = "localhost"
smtp_port = 25
sendmail_from = "me@example.com"
sendmail_path = ""
mail.force_extra_parameters = ""
mail.add_x_header = Off
mail.mixed_lf_and_crlf = Off
mail.log = ""
mail.log = "syslog"
odbc.default_db = ""
odbc.default_user = ""
odbc.default_pw = ""
odbc.default_cursortype = SQL_CURSOR_STATIC
odbc.allow_persistent = On
odbc.check_persistent = On
odbc.max_persistent = -1
odbc.max_links = -1
odbc.defaultlrl = 4096
odbc.defaultbinmode = 1
mysqli.max_persistent = -1
mysqli.allow_local_infile = 1
mysqli.local_infile_directory = ""
mysqli.allow_persistent = 1
mysqli.max_links = -1
mysqli.default_port = 3306
mysqli.default_socket = ""
mysqli.default_host = ""
mysqli.default_user = ""
mysqli.default_pw = ""
mysqli.rollback_on_cached_plink = Off
mysqlnd.collect_statistics = On
mysqlnd.collect_memory_statistics = Off
mysqlnd.debug = ""
mysqlnd.log_mask = 0
mysqlnd.mempool_default_size = 16000
mysqlnd.net_cmd_buffer_size = 2048
mysqlnd.net_read_buffer_size = 32768
mysqlnd.net_read_timeout = 31536000
mysqlnd.sha256_server_public_key = ""
pgsql.allow_persistent = On
pgsql.auto_reset_persistent = 0
pgsql.max_persistent = -1
pgsql.max_links = -1
pgsql.ignore_notice = 0
pgsql.log_notice = 0
bcmath.scale = 0
browscap = "extra/browscap.ini"
session.save_handler = "files"
session.save_path = "/tmp"
session.use_strict_mode = Off
session.use_cookies = On
session.cookie_secure = Off
session.use_only_cookies = On
session.name = "PHPSESSID"
session.auto_start = Off
session.cookie_lifetime = 0
session.cookie_path = "/"
session.cookie_domain = ""
session.cookie_httponly = Off
session.cookie_samesite = ""
session.serialize_handler = "php"
session.gc_probability = 1
session.gc_divisor = 1000
session.gc_maxlifetime = 1440
session.referer_check = ""
session.cache_limiter = "nocache"
session.cache_expire = 180
session.use_trans_sid = 0
session.trans_sid_tags = "a=href,area=href,frame=src,form="
session.trans_sid_hosts = ""
session.upload_progress.enabled = On
session.upload_progress.cleanup = On
session.upload_progress.prefix = "upload_progress_"
session.upload_progress.name = "PHP_SESSION_UPLOAD_PROGRESS"
session.upload_progress.freq = "1%"
session.upload_progress.min_freq = 1
session.lazy_write = On
zend.assertions = -1
com.typelib_file = ""
com.allow_dcom = On
com.autoregister_typelib = On
com.autoregister_casesensitive = Off
com.autoregister_verbose = On
com.code_page = ""
com.dotnet_version = ""
mbstring.language = "Japanese"
mbstring.internal_encoding = ""
mbstring.http_input = ""
mbstring.http_output = ""
mbstring.encoding_translation = Off
mbstring.detect_order = "auto"
mbstring.substitute_character = "none"
mbstring.strict_detection = Off
mbstring.http_output_conv_mimetypes = ""
mbstring.regex_stack_limit = 100000
mbstring.regex_retry_limit = 1000000
gd.jpeg_ignore_warning = On
exif.encode_unicode = "ISO-8859-15"
exif.decode_unicode_motorola = "UCS-2BE"
exif.decode_unicode_intel = "UCS-2LE"
exif.encode_jis = ""
exif.decode_jis_motorola = "JIS"
exif.decode_jis_intel = "JIS"
tidy.default_config = "/usr/local/lib/php/default.tcfg"
tidy.clean_output = Off
soap.wsdl_cache_enabled = 1
soap.wsdl_cache_dir = "/tmp"
soap.wsdl_cache_ttl = 86400
soap.wsdl_cache_limit = 5
sysvshm.init_mem = 10000
ldap.max_links = -1
dba.default_handler = ""
opcache.enable = On
opcache.enable_cli = Off
opcache.memory_consumption = 128
opcache.interned_strings_buffer = 8
opcache.max_accelerated_files = 10000
opcache.max_wasted_percentage = 5
opcache.use_cwd = On
opcache.validate_timestamps = On
opcache.revalidate_freq = 2
opcache.revalidate_path = Off
opcache.save_comments = On
opcache.record_warnings = Off
opcache.enable_file_override = Off
opcache.optimization_level = 0x7FFFBFFF
opcache.dups_fix = Off
opcache.blacklist_filename = ""
opcache.max_file_size = 0
opcache.force_restart_timeout = 180
opcache.error_log = ""
opcache.log_verbosity_level = 1
opcache.preferred_memory_model = ""
opcache.protect_memory = Off
opcache.restrict_api = ""
opcache.mmap_base = ""
opcache.cache_id = ""
opcache.file_cache = ""
opcache.file_cache_read_only = Off
opcache.file_cache_only = Off
opcache.file_cache_consistency_checks = On
opcache.file_cache_fallback = On
opcache.huge_code_pages = Off
opcache.validate_permission = Off
opcache.validate_root = Off
opcache.opt_debug_level = "0"
opcache.preload = ""
opcache.preload_user = ""
opcache.file_update_protection = 2
opcache.lockfile_path = "/tmp"
curl.cainfo = ""
;openssl.cafile = ""
;openssl.capath = ""
;ffi.enable = "preload"
;ffi.preload = ""

The issue names php.ini directives and provides the proposed formatting rules and a full example list. Start by locating the repository's php.ini template, compare its directive notation with the examples, and check how existing configuration values are represented. Done means the applicable directives consistently use the agreed spacing, quoting, and boolean conventions without changing their values.