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Jun 23, 2016 pm 02:31 PM

为了使自己的程序在不同的平台中拥有更好的兼容性，很多时候我们都要获取当前Php的运行环境参数。比如我们常用到的：获取magic_quotes_gpc状态，来决定当表单提交时我们是否转义(addslashes)数据；设定max_execution_time来延长程序的执行时间；设定error_reporting使自己的项目在开发与运营阶段切换；设定memory_limit加大内存等等…

ini_set(string varname, string newvalue ) : 设定环境配置的参数

ini_get(string varname) : 获取环境配置的参数

参数列表如下

Name Default Changeable

com.allow_dcom	“0″	PHP_INI_SYSTEM
com.autoregister_typelib	“0″	PHP_INI_SYSTEM
com.autoregister_verbose	“0″	PHP_INI_SYSTEM
com.autoregister_casesensitive	“1″	PHP_INI_SYSTEM
com.typelib_file	“”	PHP_INI_SYSTEM
crack.default_dictionary	NULL	PHP_INI_SYSTEM
exif.encode_unicode	“ISO-8859-15″	PHP_INI_ALL
exif.decode_unicode_motorola	“UCS-2BE”	PHP_INI_ALL
exif.decode_unicode_intel	“UCS-2LE”	PHP_INI_ALL
exif.encode_jis	“”	PHP_INI_ALL
exif.decode_jis_motorola	“JIS”	PHP_INI_ALL
exif.decode_jis_intel	“JIS”	PHP_INI_ALL
fbsql.allow_persistent	“1″	PHP_INI_SYSTEM
fbsql.generate_warnings	“0″	PHP_INI_SYSTEM
fbsql.autocommit	“1″	PHP_INI_SYSTEM
fbsql.max_persistent	“-1″	PHP_INI_SYSTEM
fbsql.max_links	“128″	PHP_INI_SYSTEM
fbsql.max_connections	“128″	PHP_INI_SYSTEM
fbsql.max_results	“128″	PHP_INI_SYSTEM
fbsql.batchSize	“1000″	PHP_INI_SYSTEM
fbsql.default_host	NULL	PHP_INI_SYSTEM
fbsql.default_user	“_SYSTEM”	PHP_INI_SYSTEM
fbsql.default_password	“”	PHP_INI_SYSTEM
fbsql.default_database	“”	PHP_INI_SYSTEM
fbsql.default_database_password	“”	PHP_INI_SYSTEM
hwapi.allow_persistent	“0″	PHP_INI_SYSTEM
hyperwave.allow_persistent	“0″	PHP_INI_SYSTEM
hyperwave.default_port	“418″	PHP_INI_ALL
iconv.input_encoding	ICONV_INPUT_ENCODING	PHP_INI_ALL
iconv.output_encoding	ICONV_OUTPUT_ENCODING	PHP_INI_ALL
iconv.internal_encoding	ICONV_INTERNAL_ENCODING	PHP_INI_ALL
ifx.allow_persistent	“1″	PHP_INI_SYSTEM
ifx.max_persistent	“-1″	PHP_INI_SYSTEM
ifx.max_links	“-1″	PHP_INI_SYSTEM
ifx.default_host	NULL	PHP_INI_SYSTEM
ifx.default_user	NULL	PHP_INI_SYSTEM
ifx.default_password	NULL	PHP_INI_SYSTEM
ifx.blobinfile	“1″	PHP_INI_ALL
ifx.textasvarchar	“0″	PHP_INI_ALL
ifx.byteasvarchar	“0″	PHP_INI_ALL
ifx.charasvarchar	“0″	PHP_INI_ALL
ifx.nullformat	“0″	PHP_INI_ALL
ingres.allow_persistent	“1″	PHP_INI_SYSTEM
ingres.max_persistent	“-1″	PHP_INI_SYSTEM
ingres.max_links	“-1″	PHP_INI_SYSTEM
ingres.default_database	NULL	PHP_INI_ALL
ingres.default_user	NULL	PHP_INI_ALL
ingres.default_password	NULL	PHP_INI_ALL
ibase.allow_persistent	“1″	PHP_INI_SYSTEM
ibase.max_persistent	“-1″	PHP_INI_SYSTEM
ibase.max_links	“-1″	PHP_INI_SYSTEM
ibase.default_user	NULL	PHP_INI_ALL
ibase.default_password	NULL	PHP_INI_ALL
ibase.timestampformat	“%m/%d/%Y%H:%M:%S”	PHP_INI_ALL
ibase.dateformat	“%m/%d/%Y”	PHP_INI_ALL
ibase.timeformat	“%H:%M:%S”	PHP_INI_ALL
java.class.path	NULL	PHP_INI_ALL
java.home	NULL	PHP_INI_ALL
java.library.path	NULL	PHP_INI_ALL
java.library	JAVALIB	PHP_INI_ALL
java.library	NULL	PHP_INI_ALL
ldap.max_links	“-1″	PHP_INI_SYSTEM
mbstring.detect_order	NULL	PHP_INI_ALL
mbstring.http_input	NULL	PHP_INI_ALL
mbstring.http_output	NULL	PHP_INI_ALL
mbstring.internal_encoding	NULL	PHP_INI_ALL
mbstring.substitute_character	NULL	PHP_INI_ALL
mbstring.func_overload	“0″	PHP_INI_SYSTEM
mcrypt.algorithms_dir	NULL	PHP_INI_ALL
mcrypt.modes_dir	NULL	PHP_INI_ALL
mime_magic.magicfile	“/usr/share/misc/magic.mime”	PHP_INI_SYSTEM
mssql.allow_persistent	“1″	PHP_INI_SYSTEM
mssql.max_persistent	“-1″	PHP_INI_SYSTEM
mssql.max_links	“-1″	PHP_INI_SYSTEM
mssql.max_procs	“25″	PHP_INI_ALL
mssql.min_error_severity	“10″	PHP_INI_ALL
mssql.min_message_severity	“10″	PHP_INI_ALL
mssql.compatability_mode	“0″	PHP_INI_ALL
mssql.connect_timeout	“5″	PHP_INI_ALL
mssql.timeout	“60″	PHP_INI_ALL
mssql.textsize	“-1″	PHP_INI_ALL
mssql.textlimit	“-1″	PHP_INI_ALL
mssql.batchsize	“0″	PHP_INI_ALL
mssql.datetimeconvert	“1″	PHP_INI_ALL
mssql.secure_connection	“0″	PHP_INI_SYSTEM
mysql.allow_persistent	“1″	PHP_INI_SYSTEM
mysql.max_persistent	“-1″	PHP_INI_SYSTEM
mysql.max_links	“-1″	PHP_INI_SYSTEM
mysql.default_host	NULL	PHP_INI_ALL
mysql.default_user	NULL	PHP_INI_ALL
mysql.default_password	NULL	PHP_INI_ALL
mysql.default_port	NULL	PHP_INI_ALL
mysql.default_socket	NULL	PHP_INI_ALL
ncurses.value	“42″	PHP_INI_ALL
ncurses.string	“foobar”	PHP_INI_ALL
odbc.allow_persistent	“1″	PHP_INI_SYSTEM
odbc.max_persistent	“-1″	PHP_INI_SYSTEM
odbc.max_links	“-1″	PHP_INI_SYSTEM
odbc.default_db	NULL	PHP_INI_ALL
odbc.default_user	NULL	PHP_INI_ALL
odbc.default_pw	NULL	PHP_INI_ALL
odbc.defaultlrl	“4096″	PHP_INI_ALL
odbc.defaultbinmode	“1″	PHP_INI_ALL
odbc.check_persistent	“1″	PHP_INI_SYSTEM
pfpro.defaulthost	“test.signio.com”
pfpro.defaulthost	“test-payflow.verisign.com”
pfpro.defaultport	“443″	PHP_INI_ALL
pfpro.defaulttimeout	“30″	PHP_INI_ALL
pfpro.proxyaddress	“”	PHP_INI_ALL
pfpro.proxyport	“”	PHP_INI_ALL
pfpro.proxylogon	“”	PHP_INI_ALL
pfpro.proxypassword	“”	PHP_INI_ALL
pgsql.allow_persistent	“1″	PHP_INI_SYSTEM
pgsql.max_persistent	“-1″	PHP_INI_SYSTEM
pgsql.max_links	“-1″	PHP_INI_SYSTEM
pgsql.auto_reset_persistent	“0″	PHP_INI_SYSTEM
pgsql.ignore_notice	“0″	PHP_INI_ALL
pgsql.log_notice	“0″	PHP_INI_ALL
session.save_path	“/tmp”	PHP_INI_ALL
session.name	“PHPSESSID”	PHP_INI_ALL
session.save_handler	“files”	PHP_INI_ALL
session.auto_start	“0″	PHP_INI_ALL
session.gc_probability	“1″	PHP_INI_ALL
session.gc_divisor	“100″	PHP_INI_ALL
session.gc_maxlifetime	“1440″	PHP_INI_ALL
session.serialize_handler	“php”	PHP_INI_ALL
session.cookie_lifetime	“0″	PHP_INI_ALL
session.cookie_path	“/”	PHP_INI_ALL
session.cookie_domain	“”	PHP_INI_ALL
session.cookie_secure	“”	PHP_INI_ALL
session.use_cookies	“1″	PHP_INI_ALL
session.use_only_cookies	“0″	PHP_INI_ALL
session.referer_check	“”	PHP_INI_ALL
session.entropy_file	“”	PHP_INI_ALL
session.entropy_length	“0″	PHP_INI_ALL
session.cache_limiter	“nocache”	PHP_INI_ALL
session.cache_expire	“180″	PHP_INI_ALL
session.use_trans_sid	“0″	PHP_INI_SYSTEM PHP_INI_PERDIR
session.encode_sources	“globals,track”	PHP_INI_ALL
assert.active	“1″	PHP_INI_ALL
assert.bail	“0″	PHP_INI_ALL
assert.warning	“1″	PHP_INI_ALL
assert.callback	NULL	PHP_INI_ALL
assert.quiet_eval	“0″	PHP_INI_ALL
safe_mode_protected_env_vars	SAFE_MODE_PROTECTED_ENV_VARS	PHP_INI_SYSTEM
safe_mode_allowed_env_vars	SAFE_MODE_ALLOWED_ENV_VARS	PHP_INI_SYSTEM
url_rewriter.tags	“a=href,area=href, frame=src, form=fakeentry”	PHP_INI_ALL
sybct.allow_persistent	“1″	PHP_INI_SYSTEM
sybct.max_persistent	“-1″	PHP_INI_SYSTEM
sybct.max_links	“-1″	PHP_INI_SYSTEM
sybct.min_server_severity	“10″	PHP_INI_ALL
sybct.min_client_severity	“10″	PHP_INI_ALL
sybct.hostname	NULL	PHP_INI_ALL
vpopmail.directory	“”	PHP_INI_ALL
zlib.output_compression	“0″	PHP_INI_SYSTEM PHP_INI_PERDIR
zlib.output_compression_level	“-1″	PHP_INI_ALL
define_syslog_variables	“0″	PHP_INI_ALL
highlight.bg	HL_BG_COLOR	PHP_INI_ALL
highlight.comment	HL_COMMENT_COLOR	PHP_INI_ALL
highlight.default	HL_DEFAULT_COLOR	PHP_INI_ALL
highlight.html	HL_HTML_COLOR	PHP_INI_ALL
highlight.keyword	HL_KEYWORD_COLOR	PHP_INI_ALL
highlight.string	HL_StrING_COLOR	PHP_INI_ALL
allow_call_time_pass_reference	“1″	PHP_INI_SYSTEM PHP_INI_PERDIR
asp_tags	“0″	PHP_INI_SYSTEM PHP_INI_PERDIR
display_errors	“1″	PHP_INI_ALL
display_startup_errors	“0″	PHP_INI_ALL
enable_dl	“1″	PHP_INI_SYSTEM
expose_php	“1″	PHP_INI_SYSTEM
html_errors	“1″	PHP_INI_ALL
xmlrpc_errors	“0″	PHP_INI_SYSTEM
xmlrpc_error_number	“0″	PHP_INI_ALL
ignore_user_abort	“0″	PHP_INI_ALL
implicit_flush	“0″	PHP_INI_ALL
log_errors	“0″	PHP_INI_ALL
log_errors_max_len	“1024″	PHP_INI_ALL
ignore_repeated_errors	“0″	PHP_INI_ALL
ignore_repeated_source	“0″	PHP_INI_ALL
magic_quotes_gpc	“1″	PHP_INI_PERDIR PHP_INI_SYSTEM
magic_quotes_runtime	“0″	PHP_INI_ALL
magic_quotes_sybase	“0″	PHP_INI_ALL
output_buffering	“0″	PHP_INI_PERDIR PHP_INI_SYSTEM
output_handler	NULL	PHP_INI_PERDIR PHP_INI_SYSTEM
register_argc_argv	“1″	PHP_INI_PERDIR PHP_INI_SYSTEM
register_globals	“0″	PHP_INI_PERDIR PHP_INI_SYSTEM
safe_mode	“1″	PHP_INI_SYSTEM
safe_mode	“0″	PHP_INI_SYSTEM
safe_mode_include_dir	NULL	PHP_INI_SYSTEM
safe_mode_gid	“0″	PHP_INI_SYSTEM
short_open_tag	DEFAULT_SHORT_OPEN_TAG	PHP_INI_SYSTEM PHP_INI_PERDIR
sql.safe_mode	“0″	PHP_INI_SYSTEM
track_errors	“0″	PHP_INI_ALL
y2k_compliance	“0″	PHP_INI_ALL
unserialize_callback_func	NULL	PHP_INI_ALL
arg_separator.output	“&”	PHP_INI_ALL
arg_separator.input	“&”	PHP_INI_SYSTEM PHP_INI_PERDIR
auto_append_file	NULL	PHP_INI_SYSTEM PHP_INI_PERDIR
auto_prepend_file	NULL	PHP_INI_SYSTEM PHP_INI_PERDIR
doc_root	NULL	PHP_INI_SYSTEM
default_charset	SAPI_DEFAULT_CHARSET	PHP_INI_ALL
default_mimetype	SAPI_DEFAULT_MIMETYPE	PHP_INI_ALL
error_log	NULL	PHP_INI_ALL
extension_dir	PHP_EXTENSION_DIR	PHP_INI_SYSTEM
gpc_order	“GPC”	PHP_INI_ALL
include_path	PHP_INCLUDE_PAth	PHP_INI_ALL
max_execution_time	“30″	PHP_INI_ALL
open_basedir	NULL	PHP_INI_SYSTEM
safe_mode_exec_dir	“1″	PHP_INI_SYSTEM
upload_max_filesize	“2M”	PHP_INI_SYSTEM PHP_INI_PERDIR
file_uploads	“1″	PHP_INI_SYSTEM
post_max_size	“8M”	PHP_INI_SYSTEM PHP_INI_PERDIR
upload_tmp_dir	NULL	PHP_INI_SYSTEM
user_dir	NULL	PHP_INI_SYSTEM
variables_order	NULL	PHP_INI_ALL
error_append_string	NULL	PHP_INI_ALL
error_prepend_string	NULL	PHP_INI_ALL
SMTP	“localhost”	PHP_INI_ALL
smtp_port	25	PHP_INI_ALL
browscap	NULL	PHP_INI_SYSTEM
error_reporting	NULL	PHP_INI_ALL
memory_limit	“8M”	PHP_INI_ALL
precision	“14″	PHP_INI_ALL
sendmail_from	NULL	PHP_INI_ALL
sendmail_path	DEFAULT_SENDMAIL_PAth	PHP_INI_SYSTEM
disable_classes	“”	php.ini only
disable_functions	“”	php.ini only
allow_url_fopen	“1″	PHP_INI_ALL
always_populate_raw_post_data	“0″	PHP_INI_SYSTEM PHP_INI_PERDIR
xbithack	“0″	PHP_INI_ALL
engine	“1″	PHP_INI_ALL
last_modified	“0″	PHP_INI_ALL
child_terminate	“0″	PHP_INI_ALL
async_send	“0″	PHP_INI_ALL

可操作范围见下表：

操作范围

Constant Value Meaning

PHP_INI_USER	1	Entry can be set in user scripts
PHP_INI_PERDIR	2	Entry can be set in php.ini, .htaccess or httpd.conf
PHP_INI_SYSTEM	4	Entry can be set in php.ini or httpd.conf
PHP_INI_ALL	7	Entry can be set anywhere

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