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# Appendix G. `php.ini` directives

# List of `php.ini` directives

This list includes the `php.ini` directives you can set to configure your PHP setup.

Table G-1. Configuration options

Name | Default | Changeable | Changelog
--- | --- | --- | ---
allow_call_time_pass_reference | "1" | PHP_INI_PERDIR | PHP_INI_ALL in PHP <= 4.0.0.
allow_url_fopen | "1" | PHP_INI_SYSTEM | PHP_INI_ALL in PHP <= 4.3.4. Available since PHP 4.0.4.
allow_url_include | "0" | PHP_INI_SYSTEM | Available since PHP 6.0.0.
always_populate_raw_post_data | "0" | PHP_INI_PERDIR | PHP_INI_ALL in PHP <= 4.2.3. Available since PHP 4.1.0.
apc.cache_by_default | "1" | PHP_INI_SYSTEM |
apc.enabled | "1" | PHP_INI_ALL |
apc.enable_cli | "0" | PHP_INI_SYSTEM |
apc.file_update_protection | "2" | PHP_INI_SYSTEM |
apc.filters | NULL | PHP_INI_SYSTEM |
apc.gc_ttl | "3600" | PHP_INI_SYSTEM |
apc.max_file_size | "1M" | PHP_INI_SYSTEM |
apc.mmap_file_mask | NULL | PHP_INI_SYSTEM |
apc.num_files_hint | "1000" | PHP_INI_SYSTEM |
apc.optimization | "0" | PHP_INI_ALL |
apc.shm_segments | "1" | PHP_INI_SYSTEM |
apc.shm_size | "30" | PHP_INI_SYSTEM |
apc.slam_defense | "0" | PHP_INI_SYSTEM |
apc.ttl | "0" | PHP_INI_SYSTEM |
apc.user_entries_hint | "100" | PHP_INI_SYSTEM |
apc.user_ttl | "0" | PHP_INI_SYSTEM |
apd.dumpdir | NULL | PHP_INI_ALL |
apd.statement_tracing | "0" | PHP_INI_ALL |
arg_separator.input | "&" | PHP_INI_PERDIR | Available since PHP 4.0.5.
arg_separator.output | "&" | PHP_INI_ALL | Available since PHP 4.0.5.
asp_tags | "0" | PHP_INI_PERDIR | PHP_INI_ALL in PHP <= 4.0.0.
assert.active | "1" | PHP_INI_ALL |
assert.bail | "0" | PHP_INI_ALL |
assert.callback | NULL | PHP_INI_ALL |
assert.quiet_eval | "0" | PHP_INI_ALL |
assert.warning | "1" | PHP_INI_ALL |
auto_append_file | NULL | PHP_INI_PERDIR | PHP_INI_ALL in PHP <= 4.2.3.
auto_detect_line_endings | "0" | PHP_INI_ALL | Available since PHP 4.3.0.
auto_globals_jit | "1" | PHP_INI_PERDIR | Available since PHP 5.0.0.
auto_prepend_file | NULL | PHP_INI_PERDIR | PHP_INI_ALL in PHP <= 4.2.3.
bcmath.scale | "0" | PHP_INI_ALL |
bcompiler.enabled | "1" | PHP_INI_ALL |
birdstep.max_links | "-1" | PHP_INI_ALL | Available since PHP 4.2.0.
blenc.key_file | "/usr/local/etc/blenckeys" | PHP_INI_ALL |
browscap | NULL | PHP_INI_SYSTEM |
cgi.discard_path | "0" | PHP_INI_ALL | Available since PHP 6.0.0.
cgi.fix_pathinfo | "1" | PHP_INI_ALL | Available since PHP 4.3.0.
cgi.force_redirect | "1" | PHP_INI_ALL | Available since PHP 4.2.0.
cgi.nph | "0" | PHP_INI_ALL | Available since PHP 4.3.5.
cgi.redirect_status_env | NULL | PHP_INI_ALL | Available since PHP 4.2.0.
cgi.rfc2616_headers | "0" | PHP_INI_ALL | Available since PHP 4.3.0.
child_terminate | "0" | PHP_INI_ALL | Available since PHP 4.0.5.
com.allow_dcom | "0" | PHP_INI_SYSTEM | Available since PHP 4.0.5.
com.autoregister_casesensitive | "1" | PHP_INI_ALL | PHP_INI_SYSTEM in PHP 4. Available since PHP 4.1.0.
com.autoregister_typelib | "0" | PHP_INI_ALL | PHP_INI_SYSTEM in PHP 4. Available since PHP 4.1.0.
com.autoregister_verbose | "0" | PHP_INI_ALL | PHP_INI_SYSTEM in PHP 4. Available since PHP 4.1.0.
com.code_page | "" | PHP_INI_ALL | Available since PHP 5.0.0.
com.typelib_file | "" | PHP_INI_SYSTEM | Available since PHP 4.0.5.
crack.default_dictionary | NULL | PHP_INI_PERDIR | Available since PHP 4.0.5.
daffodildb.default_host | "localhost" | PHP_INI_ALL |
daffodildb.default_password | "daffodil" | PHP_INI_ALL |
daffodildb.default_socket | NULL | PHP_INI_ALL |
daffodildb.default_user | "DAFFODIL" | PHP_INI_ALL |
daffodildb.port | "3456" | PHP_INI_ALL |
date.default_latitude | "31.7667" | PHP_INI_ALL | Available since PHP 5.0.0.
date.default_longitude | "35.2333" | PHP_INI_ALL | Available since PHP 5.0.0.
date.sunrise_zenith | "90.83" | PHP_INI_ALL | Available since PHP 5.0.0.
date.sunset_zenith | "90.83" | PHP_INI_ALL | Available since PHP 5.0.0.
date.timezone | "" | PHP_INI_ALL | Available since PHP 5.1.0.
dba.default_handler | "" | PHP_INI_ALL | Available since PHP 4.3.3.
dbx.colnames_case | "unchanged" | PHP_INI_SYSTEM | Available since PHP 4.3.0.
default_charset | "" | PHP_INI_ALL |
default_mimetype | "text/html" | PHP_INI_ALL |
default_socket_timeout | "60" | PHP_INI_ALL | Available since PHP 4.3.0.
define_syslog_variables | "0" | PHP_INI_ALL |
disable_classes | "" | `php.ini` only | Available since PHP 4.3.2.
disable_functions | "" | `php.ini` only | Available since PHP 4.0.1.
display_errors | "1" | PHP_INI_ALL |
display_startup_errors | "0" | PHP_INI_ALL | Available since PHP 4.0.3.
docref_ext | "" | PHP_INI_ALL | Available since PHP 4.3.2.
docref_root | "" | PHP_INI_ALL | Available since PHP 4.3.0.
doc_root | NULL | PHP_INI_SYSTEM |
enable_dl | "1" | PHP_INI_SYSTEM |
engine | "1" | PHP_INI_ALL | Available since PHP 4.0.5.
error_append_string | NULL | PHP_INI_ALL |
error_log | NULL | PHP_INI_ALL |
error_prepend_string | NULL | PHP_INI_ALL |
error_reporting | NULL | PHP_INI_ALL |
exif.decode_jis_intel | "JIS" | PHP_INI_ALL | Available since PHP 4.3.0.
exif.decode_jis_motorola | "JIS" | PHP_INI_ALL | Available since PHP 4.3.0.
exif.decode_unicode_intel | "UCS-2LE" | PHP_INI_ALL | Available since PHP 4.3.0.
exif.decode_unicode_motorola | "UCS-2BE" | PHP_INI_ALL | Available since PHP 4.3.0.
exif.encode_jis | "" | PHP_INI_ALL | Available since PHP 4.3.0.
exif.encode_unicode | "ISO-8859-15" | PHP_INI_ALL | Available since PHP 4.3.0.
expect.logfile | "" | PHP_INI_ALL |
expect.loguser | "1" | PHP_INI_ALL |
expect.timeout | "10" | PHP_INI_ALL |
expose_php | "1" | `php.ini` only |
extension_dir | "/path/to/php" | PHP_INI_SYSTEM |
fastcgi.impersonate | "0" | PHP_INI_ALL | Available since PHP 4.3.0.
fastcgi.logging | "1" | PHP_INI_ALL | Available since PHP 4.4.0.
fbsql.allow_persistent | "1" | PHP_INI_SYSTEM | Available since PHP 4.2.0.
fbsql.autocommit | "1" | PHP_INI_SYSTEM | Available since PHP 4.0.6.
fbsql.batchsize | "1000" | PHP_INI_ALL | Available since PHP 5.1.0.
fbsql.default_database | "" | PHP_INI_SYSTEM | Available since PHP 4.0.6.
fbsql.default_database_password | "" | PHP_INI_SYSTEM | Available since PHP 4.0.6.
fbsql.default_host | NULL | PHP_INI_SYSTEM | Available since PHP 4.0.6.
fbsql.default_password | "" | PHP_INI_SYSTEM | Available since PHP 4.0.6.
fbsql.default_user | "_SYSTEM" | PHP_INI_SYSTEM | Available since PHP 4.0.6.
fbsql.generate_warnings | "0" | PHP_INI_SYSTEM | Available since PHP 4.0.6.
fbsql.max_connections | "128" | PHP_INI_SYSTEM | Available since PHP 4.0.6.
fbsql.max_links | "128" | PHP_INI_SYSTEM | Available since PHP 4.0.6.
fbsql.max_persistent | "-1" | PHP_INI_SYSTEM | Available since PHP 4.0.6.
fbsql.max_results | "128" | PHP_INI_SYSTEM | Available since PHP 4.0.6.
file_uploads | "1" | PHP_INI_SYSTEM | PHP_INI_ALL in PHP <= 4.2.3. Available since PHP 4.0.3.
filter.default | "string" | PHP_INI_ALL |
filter.default_flags | NULL | PHP_INI_ALL |
from | "" | PHP_INI_ALL |
highlight.bg | "#FFFFFF" | PHP_INI_ALL |
highlight.comment | "#FF8000" | PHP_INI_ALL |
highlight.default | "#0000BB" | PHP_INI_ALL |
highlight.html | "#000000" | PHP_INI_ALL |
highlight.keyword | "#007700" | PHP_INI_ALL |
highlight.string | "#DD0000" | PHP_INI_ALL |
html_errors | "1" | PHP_INI_ALL | PHP_INI_SYSTEM in PHP <= 4.2.3. Available since PHP 4.0.2.
http.allowed_methods | "" | PHP_INI_ALL |
http.allowed_methods_log | "" | PHP_INI_ALL |
http.cache_log | "" | PHP_INI_ALL |
http.composite_log | "" | PHP_INI_ALL |
http.etag_mode | "MD5" | PHP_INI_ALL |
http.force_exit | "1" | PHP_INI_ALL |
http.ob_deflate_auto | "0" | PHP_INI_PERDIR |
http.ob_deflate_flags | "0" | PHP_INI_ALL |
http.ob_inflate_auto | "0" | PHP_INI_PERDIR |
http.ob_inflate_flags | "0" | PHP_INI_ALL |
http.only_exceptions | "0" | PHP_INI_ALL |
http.redirect_log | "" | PHP_INI_ALL |
hyperwave.allow_persistent | "0" | PHP_INI_SYSTEM | Available since PHP 4.3.2.
hyperwave.default_port | "418" | PHP_INI_ALL |
ibase.allow_persistent | "1" | PHP_INI_SYSTEM |
ibase.dateformat | "%Y-%m-%d" | PHP_INI_ALL |
ibase.default_charset | NULL | PHP_INI_ALL | Available since PHP 5.0.0.
ibase.default_db | NULL | PHP_INI_SYSTEM | Available since PHP 5.0.0.
ibase.default_password | NULL | PHP_INI_ALL |
ibase.default_user | NULL | PHP_INI_ALL |
ibase.max_links | "-1" | PHP_INI_SYSTEM |
ibase.max_persistent | "-1" | PHP_INI_SYSTEM |
ibase.timeformat | "%H:%M:%S" | PHP_INI_ALL |
ibase.timestampformat | "%Y-%m-%d %H:%M:%S" | PHP_INI_ALL |
ibm_db2.binmode | "1" | PHP_INI_ALL |
ibm_db2.instance_name | NULL | PHP_INI_SYSTEM |
iconv.input_encoding | "ISO-8859-1" | PHP_INI_ALL | Available since PHP 4.0.5.
iconv.internal_encoding | "ISO-8859-1" | PHP_INI_ALL | Available since PHP 4.0.5.
iconv.output_encoding | "ISO-8859-1" | PHP_INI_ALL | Available since PHP 4.0.5.
ifx.allow_persistent | "1" | PHP_INI_SYSTEM |
ifx.blobinfile | "1" | PHP_INI_ALL |
ifx.byteasvarchar | "0" | PHP_INI_ALL |
ifx.charasvarchar | "0" | PHP_INI_ALL |
ifx.default_host | NULL | PHP_INI_SYSTEM |
ifx.default_password | NULL | PHP_INI_SYSTEM |
ifx.default_user | NULL | PHP_INI_SYSTEM |
ifx.max_links | "-1" | PHP_INI_SYSTEM |
ifx.max_persistent | "-1" | PHP_INI_SYSTEM |
ifx.nullformat | "0" | PHP_INI_ALL |
ifx.textasvarchar | "0" | PHP_INI_ALL |
ignore_repeated_errors | "0" | PHP_INI_ALL | Available since PHP 4.3.0.
ignore_repeated_source | "0" | PHP_INI_ALL | Available since PHP 4.3.0.
ignore_user_abort | "0" | PHP_INI_ALL |
implicit_flush | "0" | PHP_INI_ALL | PHP_INI_PERDIR in PHP <= 4.2.3.
include_path | ".;/path/to/php/pear" | PHP_INI_ALL |
ingres.allow_persistent | "1" | PHP_INI_SYSTEM | Available since PHP 4.0.2.
ingres.blob_segment_length | "4096" | PHP_INI_ALL |
ingres.cursor_mode | "0" | PHP_INI_ALL |
ingres.default_database | NULL | PHP_INI_ALL | Available since PHP 4.0.2.
ingres.default_password | NULL | PHP_INI_ALL | Available since PHP 4.0.2.
ingres.default_user | NULL | PHP_INI_ALL | Available since PHP 4.0.2.
ingres.max_links | "-1" | PHP_INI_SYSTEM | Available since PHP 4.0.2.
ingres.max_persistent | "-1" | PHP_INI_SYSTEM | Available since PHP 4.0.2.
ingres.report_db_warnings | "1" | PHP_INI_ALL |
ingres.timeout | "-1" | PHP_INI_ALL |
ingres.trace_connect | "0" | PHP_INI_ALL |
ircg.control_user | "nobody" | PHP_INI_ALL | Available since PHP 5.0.0.
ircg.keep_alive_interval | "60" | PHP_INI_ALL | Available since PHP 5.0.0.
ircg.max_format_message_sets | "12" | PHP_INI_ALL | Available since PHP 5.0.0.
ircg.shared_mem_size | "6000000" | PHP_INI_ALL | Available since PHP 5.0.0.
ircg.work_dir | "/tmp/ircg" | PHP_INI_ALL | Available since PHP 5.0.0.
last_modified | "0" | PHP_INI_ALL | Available since PHP 4.0.5.
ldap.max_links | "-1" | PHP_INI_SYSTEM |
log_errors | "0" | PHP_INI_ALL |
log_errors_max_len | "1024" | PHP_INI_ALL | Available since PHP 4.3.0.
magic_quotes_gpc | "1" | PHP_INI_PERDIR | PHP_INI_ALL in PHP <= 4.2.3.
magic_quotes_runtime | "0" | PHP_INI_ALL |
magic_quotes_sybase | "0" | PHP_INI_ALL |
mail.force_extra_parameters | NULL | PHP_INI_PERDIR | Available since PHP 5.0.0.
mailparse.def_charset | "us-ascii" | PHP_INI_ALL | Available since PHP 4.1.0.
maxdb.default_db | NULL | PHP_INI_ALL |
maxdb.default_host | NULL | PHP_INI_ALL |
maxdb.default_pw | NULL | PHP_INI_ALL |
maxdb.default_user | NULL | PHP_INI_ALL |
maxdb.long_readlen | "200" | PHP_INI_ALL |
max_execution_time | "30" | PHP_INI_ALL |
max_input_time | "-1" | PHP_INI_PERDIR | Available since PHP 4.3.0.
mbstring.detect_order | NULL | PHP_INI_ALL | Available since PHP 4.0.6.
mbstring.encoding_translation | "0" | PHP_INI_PERDIR | Available since PHP 4.3.0.
mbstring.func_overload | "0" | PHP_INI_PERDIR | PHP_INI_SYSTEM in PHP <= 4.2.3. Available since PHP 4.2.0.
mbstring.http_input | "pass" | PHP_INI_ALL | Available since PHP 4.0.6.
mbstring.http_output | "pass" | PHP_INI_ALL | Available since PHP 4.0.6.
mbstring.internal_encoding | NULL | PHP_INI_ALL | Available since PHP 4.0.6.
mbstring.language | "neutral" | PHP_INI_PERDIR | Available since PHP 4.3.0.
mbstring.script_encoding | NULL | PHP_INI_ALL | Available since PHP 4.3.0.
mbstring.strict_detection | "0" | PHP_INI_ALL | Available since PHP 5.1.2.
mbstring.substitute_character | NULL | PHP_INI_ALL | Available since PHP 4.0.6.
mcrypt.algorithms_dir | NULL | PHP_INI_ALL | Available since PHP 4.0.2.
mcrypt.modes_dir | NULL | PHP_INI_ALL | Available since PHP 4.0.2.
memory_limit | "8M" | PHP_INI_ALL |
mime_magic.debug | "0" | PHP_INI_SYSTEM | Available since PHP 5.0.0.
mime_magic.magicfile | "/path/to/php/magic.mime" | PHP_INI_SYSTEM | Available since PHP 4.3.0.
msql.allow_persistent | "1" | PHP_INI_ALL |
msql.max_links | "-1" | PHP_INI_ALL |
msql.max_persistent | "-1" | PHP_INI_ALL |
mssql.allow_persistent | "1" | PHP_INI_SYSTEM |
mssql.batchsize | "0" | PHP_INI_ALL | Available since PHP 4.0.4.
mssql.charset | "" | PHP_INI_ALL | Available since PHP 5.1.2.
mssql.compatability_mode | "0" | PHP_INI_ALL |
mssql.connect_timeout | "5" | PHP_INI_ALL |
mssql.datetimeconvert | "1" | PHP_INI_ALL | Available since PHP 4.2.0.
mssql.max_links | "-1" | PHP_INI_SYSTEM |
mssql.max_persistent | "-1" | PHP_INI_SYSTEM |
mssql.max_procs | "-1" | PHP_INI_ALL | Available since PHP 4.3.0.
mssql.min_error_severity | "10" | PHP_INI_ALL |
mssql.min_message_severity | "10" | PHP_INI_ALL |
mssql.secure_connection | "0" | PHP_INI_SYSTEM | Available since PHP 4.3.0.
mssql.textlimit | "-1" | PHP_INI_ALL |
mssql.textsize | "-1" | PHP_INI_ALL |
mssql.timeout | "60" | PHP_INI_ALL | Available since PHP 4.1.0.
mysql.allow_persistent | "1" | PHP_INI_SYSTEM |
mysql.connect_timeout | "60" | PHP_INI_ALL | PHP_INI_SYSTEM in PHP <= 4.3.2. Available since PHP 4.3.0.
mysql.default_host | 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 | Available since PHP 4.0.1.
mysql.default_user | NULL | PHP_INI_ALL |
mysql.max_links | "-1" | PHP_INI_SYSTEM |
mysql.max_persistent | "-1" | PHP_INI_SYSTEM |
mysql.trace_mode | "0" | PHP_INI_ALL | Available since PHP 4.3.0.
mysqli.default_host | NULL | PHP_INI_ALL | Available since PHP 5.0.0.
mysqli.default_port | "3306" | PHP_INI_ALL | Available since PHP 5.0.0.
mysqli.default_pw | NULL | PHP_INI_ALL | Available since PHP 5.0.0.
mysqli.default_socket | NULL | PHP_INI_ALL | Available since PHP 5.0.0.
mysqli.default_user | NULL | PHP_INI_ALL | Available since PHP 5.0.0.
mysqli.max_links | "-1" | PHP_INI_SYSTEM | Available since PHP 5.0.0.
mysqli.reconnect | "0" | PHP_INI_SYSTEM | Available since PHP 5.0.0.
namazu.debugmode | "0" | PHP_INI_ALL |
namazu.lang | NULL | PHP_INI_ALL |
namazu.loggingmode | "0" | PHP_INI_ALL |
namazu.sortmethod | NULL | PHP_INI_ALL |
namazu.sortorder | NULL | PHP_INI_ALL |
nsapi.read_timeout | "60" | PHP_INI_ALL | Available since PHP 4.3.3.
oci8.default_prefetch | "10" | PHP_INI_SYSTEM | Available since PHP 5.1.2.
oci8.max_persistent | "-1" | PHP_INI_SYSTEM | Available since PHP 5.1.2.
oci8.old_oci_close_semantics | "0" | PHP_INI_SYSTEM | Available since PHP 5.1.2.
oci8.persistent_timeout | "-1" | PHP_INI_SYSTEM | Available since PHP 5.1.2.
oci8.ping_interval | "60" | PHP_INI_SYSTEM | Available since PHP 5.1.2.
oci8.privileged_connect | "0" | PHP_INI_SYSTEM | Available since PHP 5.1.2.
oci8.statement_cache_size | "20" | PHP_INI_SYSTEM | Available since PHP 5.1.2.
odbc.allow_persistent | "1" | PHP_INI_SYSTEM |
odbc.check_persistent | "1" | PHP_INI_SYSTEM |
odbc.defaultbinmode | "1" | PHP_INI_ALL |
odbc.defaultlrl | "4096" | PHP_INI_ALL |
odbc.default_db | NULL | PHP_INI_ALL |
odbc.default_pw | NULL | PHP_INI_ALL |
odbc.default_user | NULL | PHP_INI_ALL |
odbc.max_links | "-1" | PHP_INI_SYSTEM |
odbc.max_persistent | "-1" | PHP_INI_SYSTEM |
opendirectory.max_refs | "-1" | PHP_INI_ALL |
opendirectory.separator | "/" | PHP_INI_ALL |
open_basedir | NULL | PHP_INI_SYSTEM |
oracle.allow_persistent | "-1" | PHP_INI_ALL |
oracle.max_links | "-1" | PHP_INI_ALL |
oracle.max_persistent | "-1" | PHP_INI_ALL |
output_buffering | "0" | PHP_INI_PERDIR |
output_handler | NULL | PHP_INI_PERDIR | Available since PHP 4.0.4.
pdo_odbc.connection_pooling | "strict" | PHP_INI_ALL | Available since PHP 5.1.0.
pfpro.defaulthost | "test-payflow.verisign.com" | PHP_INI_ALL | Available since PHP 4.0.2.
pfpro.defaultport | "443" | PHP_INI_ALL | Available since PHP 4.0.2.
pfpro.defaulttimeout | "30" | PHP_INI_ALL | Available since PHP 4.0.2.
pfpro.proxyaddress | "" | PHP_INI_ALL | Available since PHP 4.0.2.
pfpro.proxylogon | "" | PHP_INI_ALL | Available since PHP 4.0.2.
pfpro.proxypassword | "" | PHP_INI_ALL | Available since PHP 4.0.2.
pfpro.proxyport | "" | PHP_INI_ALL | Available since PHP 4.0.2.
pgsql.allow_persistent | "1" | PHP_INI_SYSTEM |
pgsql.auto_reset_persistent | "0" | PHP_INI_SYSTEM | Available since PHP 4.2.0.
pgsql.ignore_notice | "0" | PHP_INI_ALL | Available since PHP 4.3.0.
pgsql.log_notice | "0" | PHP_INI_ALL | Available since PHP 4.3.0.
pgsql.max_links | "-1" | PHP_INI_SYSTEM |
pgsql.max_persistent | "-1" | PHP_INI_SYSTEM |
post_max_size | "8M" | PHP_INI_PERDIR | PHP_INI_SYSTEM in PHP <= 4.2.3. Available since PHP 4.0.3.
precision | "14" | PHP_INI_ALL |
printer.default_printer | "" | PHP_INI_ALL |
realpath_cache_size | "16K" | PHP_INI_SYSTEM | Available since PHP 5.1.0.
realpath_cache_ttl | "120" | PHP_INI_SYSTEM | Available since PHP 5.1.0.
register_argc_argv | "1" | PHP_INI_PERDIR | PHP_INI_ALL in PHP <= 4.2.3.
register_globals | "0" | PHP_INI_PERDIR | PHP_INI_ALL in PHP <= 4.2.3.
register_long_arrays | "1" | PHP_INI_PERDIR | Available since PHP 5.0.0.
report_memleaks | "1" | PHP_INI_ALL | Available since PHP 4.3.0.
report_zend_debug | "1" | PHP_INI_ALL | Available since PHP 5.0.0.
runkit.internal_override | "0" | PHP_INI_SYSTEM |
runkit.superglobal | "" | PHP_INI_PERDIR |
safe_mode | "0" | PHP_INI_SYSTEM |
safe_mode_allowed_env_vars | "PHP_" | PHP_INI_SYSTEM |
safe_mode_exec_dir | "" | PHP_INI_SYSTEM |
safe_mode_gid | "0" | PHP_INI_SYSTEM | Available since PHP 4.1.0.
safe_mode_include_dir | NULL | PHP_INI_SYSTEM | Available since PHP 4.1.0.
safe_mode_protected_env_vars | "LD_LIBRARY_PATH" | PHP_INI_SYSTEM |
sendmail_from | NULL | PHP_INI_ALL |
sendmail_path | NULL | PHP_INI_SYSTEM |
serialize_precision | "100" | PHP_INI_ALL | Available since PHP 4.3.2.
session.auto_start | "0" | PHP_INI_ALL |
session.bug_compat_42 | "1" | PHP_INI_ALL | Available since PHP 4.3.0.
session.bug_compat_warn | "1" | PHP_INI_ALL | Available since PHP 4.3.0.
session.cache_expire | "180" | PHP_INI_ALL |
session.cache_limiter | "nocache" | PHP_INI_ALL |
session.cookie_domain | "" | PHP_INI_ALL |
session.cookie_lifetime | "0" | PHP_INI_ALL |
session.cookie_path | "/" | PHP_INI_ALL |
session.cookie_secure | "" | PHP_INI_ALL | Available since PHP 4.0.4.
session.entropy_file | "" | PHP_INI_ALL |
session.entropy_length | "0" | PHP_INI_ALL |
session.gc_divisor | "100" | PHP_INI_ALL | Available since PHP 4.3.2.
session.gc_maxlifetime | "1440" | PHP_INI_ALL |
session.gc_probability | "1" | PHP_INI_ALL |
session.hash_bits_per_character | "4" | PHP_INI_ALL | Available since PHP 5.0.0.
session.hash_function | "0" | PHP_INI_ALL | Available since PHP 5.0.0.
session.name | "PHPSESSID" | PHP_INI_ALL |
session.referer_check | "" | PHP_INI_ALL |
session.save_handler | "files" | PHP_INI_ALL |
session.save_path | "" | PHP_INI_ALL |
session.serialize_handler | "php" | PHP_INI_ALL |
session.use_cookies | "1" | PHP_INI_ALL |
session.use_only_cookies | "1" | PHP_INI_ALL | Available since PHP 4.3.0.
session.use_trans_sid | "0" | PHP_INI_ALL | PHP_INI_ALL in PHP <= 4.2.3. PHP_INI_PERDIR in PHP < 5. Available since PHP 4.0.3.
session_pgsql.create_table | "1" | PHP_INI_SYSTEM |
session_pgsql.db | "host=localhost dbname=php_session user=nobody" | PHP_INI_SYSTEM |
session_pgsql.disable | "0" | PHP_INI_SYSTEM |
session_pgsql.failover_mode | "0" | PHP_INI_SYSTEM |
session_pgsql.gc_interval | "3600" | PHP_INI_SYSTEM |
session_pgsql.keep_expired | "0" | PHP_INI_SYSTEM |
session_pgsql.sem_file_name | "/tmp/php_session_pgsql" | PHP_INI_SYSTEM |
session_pgsql.serializable | "0" | PHP_INI_SYSTEM |
session_pgsql.short_circuit | "0" | PHP_INI_SYSTEM |
session_pgsql.use_app_vars | "0" | PHP_INI_SYSTEM |
session_pgsql.vacuum_interval | "21600" | PHP_INI_SYSTEM |
short_open_tag | "1" | PHP_INI_PERDIR | PHP_INI_ALL in PHP <= 4.0.0.
simple_cvs.authMethod | "0" | PHP_INI_ALL |
simple_cvs.compressionLevel | "0" | PHP_INI_ALL |
simple_cvs.cvsRoot | "0" | PHP_INI_ALL |
simple_cvs.host | "0" | PHP_INI_ALL |
simple_cvs.moduleName | "0" | PHP_INI_ALL |
simple_cvs.userName | "0" | PHP_INI_ALL |
simple_cvs.workingDir | "0" | PHP_INI_ALL |
SMTP | "localhost" | PHP_INI_ALL |
smtp_port | "25" | PHP_INI_ALL | Available since PHP 4.3.0.
soap.wsdl_cache_dir | "/tmp" | PHP_INI_ALL | Available since PHP 5.0.0.
soap.wsdl_cache_enabled | "1" | PHP_INI_ALL | Available since PHP 5.0.0.
soap.wsdl_cache_ttl | "86400" | PHP_INI_ALL | Available since PHP 5.0.0.
sql.safe_mode | "0" | PHP_INI_SYSTEM |
sqlite.assoc_case | "0" | PHP_INI_ALL | Available since PHP 5.0.0.
sybase.allow_persistent | "1" | PHP_INI_ALL | PHP_INI_ALL in PHP <= 4.0.2. PHP_INI_SYSTEM in PHP <= 4.0.3.
sybase.compatability_mode | "0" | PHP_INI_ALL |
sybase.interface_file | "" | PHP_INI_ALL |
sybase.max_links | "-1" | PHP_INI_ALL | PHP_INI_ALL in PHP <= 4.0.2. PHP_INI_SYSTEM in PHP <= 4.0.3.
sybase.max_persistent | "-1" | PHP_INI_ALL | PHP_INI_ALL in PHP <= 4.0.2. PHP_INI_SYSTEM in PHP <= 4.0.3.
sybase.min_error_severity | "10" | PHP_INI_ALL |
sybase.min_message_severity | "10" | PHP_INI_ALL |
sybct.allow_persistent | "1" | PHP_INI_SYSTEM | PHP_INI_ALL in PHP <= 4.0.2. Available since PHP 4.0.2.
sybct.deadlock_retry_count | "0" | PHP_INI_ALL | Available since PHP 4.3.0.
sybct.hostname | NULL | PHP_INI_ALL | Available since PHP 4.0.2.
sybct.login_timeout | "-1" | PHP_INI_ALL | Available since PHP 4.0.2.
sybct.max_links | "-1" | PHP_INI_SYSTEM | PHP_INI_ALL in PHP <= 4.0.2. Available since PHP 4.0.2.
sybct.max_persistent | "-1" | PHP_INI_SYSTEM | PHP_INI_ALL in PHP <= 4.0.2. Available since PHP 4.0.2.
sybct.min_client_severity | "10" | PHP_INI_ALL | Available since PHP 4.0.2.
sybct.min_server_severity | "10" | PHP_INI_ALL | Available since PHP 4.0.2.
sybct.packet_size | "0" | PHP_INI_ALL | Available since PHP 4.3.5.
sybct.timeout | "0" | PHP_INI_ALL | Available since PHP 4.0.2.
sysvshm.init_mem | "10000" | PHP_INI_ALL |
tidy.clean_output | "0" | PHP_INI_PERDIR | Available since PHP 5.0.0.
tidy.default_config | "" | PHP_INI_SYSTEM | Available since PHP 5.0.0.
track_errors | "0" | PHP_INI_ALL |
unicode.fallback_encoding | NULL | PHP_INI_ALL | Available since PHP 6.0.0.
unicode.from_error_mode | "2" | PHP_INI_ALL | Available since PHP 6.0.0.
unicode.from_error_subst_char | "3f" | PHP_INI_ALL | Available since PHP 6.0.0.
unicode.http_input_encoding | NULL | PHP_INI_ALL | Available since PHP 6.0.0.
unicode.output_encoding | NULL | PHP_INI_ALL | Available since PHP 6.0.0.
unicode.runtime_encoding | NULL | PHP_INI_ALL | Available since PHP 6.0.0.
unicode.script_encoding | NULL | PHP_INI_ALL | Available since PHP 6.0.0.
unicode_semantics | "off" | PHP_INI_PERDIR | Available since PHP 6.0.0.
unserialize_callback_func | NULL | PHP_INI_ALL | Available since PHP 4.2.0.
upload_max_filesize | "2M" | PHP_INI_PERDIR | PHP_INI_ALL in PHP <= 4.2.3.
upload_tmp_dir | NULL | PHP_INI_SYSTEM |
url_rewriter.tags | "a=href,area=href,frame=src,form=,fieldset=" | PHP_INI_ALL | Available since PHP 4.0.4.
user_agent | NULL | PHP_INI_ALL | Available since PHP 4.3.0.
user_dir | NULL | PHP_INI_SYSTEM |
valkyrie.auto_validate | "0" | PHP_INI_ALL |
valkyrie.config_path | NULL | PHP_INI_ALL |
variables_order | "EGPCS" | PHP_INI_PERDIR | PHP_INI_ALL in PHP <= 5.0.5.
xbithack | "0" | PHP_INI_ALL | Available since PHP 4.0.5.
xmlrpc_errors | "0" | PHP_INI_SYSTEM | Available since PHP 4.1.0.
xmlrpc_error_number | "0" | PHP_INI_ALL | Available since PHP 4.1.0.
xmms.path | "/usr/bin/xmms" | PHP_INI_ALL |
xmms.session | "0" | PHP_INI_ALL |
y2k_compliance | "1" | PHP_INI_ALL |
yaz.keepalive | "120" | PHP_INI_ALL |
yaz.log_file | NULL | PHP_INI_ALL | Available since PHP 4.3.0.
yaz.log_mask | NULL | PHP_INI_ALL |
yaz.max_links | "100" | PHP_INI_ALL | Available since PHP 4.3.0.
zend.ze1_compatibility_mode | "0" | PHP_INI_ALL | Available since PHP 5.0.0.
zlib.output_compression | "0" | PHP_INI_ALL | Available since PHP 4.0.5.
zlib.output_compression_level | "-1" | PHP_INI_ALL | Available since PHP 4.3.0.
zlib.output_handler | "" | PHP_INI_ALL | Available since PHP 4.3.0.

Table G-2. Definition of PHP_INI_* constants

Constant | Value | Meaning
--- | --- | ---
PHP_INI_USER | 1 | Entry can be set in user scripts or in Windows registry
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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