PHP configuration options
PHP has a plethora of configuration options and trying to remember them all would be a tough exercise. There is a simple way to find out what configuration options are available and also there values.
/* show all our configuration options */
print_r(array_keys(ini_get_all()));
/* show all our configuration options and their values */
print_r(ini_get_all());
/* show configuration options, their values, and format for html */
echo '<pre>'; print_r(ini_get_all()); echo '<pre>';
The PHP version that I'm currently using showed these options.
Array
(
[0] => allow_call_time_pass_reference
[1] => allow_url_fopen
[2] => allow_url_include
[3] => always_populate_raw_post_data
[4] => arg_separator.input
[5] => arg_separator.output
[6] => asp_tags
[7] => assert.active
[8] => assert.bail
[9] => assert.callback
[10] => assert.quiet_eval
[11] => assert.warning
[12] => auto_append_file
[13] => auto_detect_line_endings
[14] => auto_globals_jit
[15] => auto_prepend_file
[16] => bcmath.scale
[17] => browscap
[18] => cgi.check_shebang_line
[19] => cgi.fix_pathinfo
[20] => cgi.force_redirect
[21] => cgi.nph
[22] => cgi.redirect_status_env
[23] => cgi.rfc2616_headers
[24] => date.default_latitude
[25] => date.default_longitude
[26] => date.sunrise_zenith
[27] => date.sunset_zenith
[28] => date.timezone
[29] => dba.default_handler
[30] => default_charset
[31] => default_mimetype
[32] => default_socket_timeout
[33] => define_syslog_variables
[34] => disable_classes
[35] => disable_functions
[36] => display_errors
[37] => display_startup_errors
[38] => doc_root
[39] => docref_ext
[40] => docref_root
[41] => enable_dl
[42] => error_append_string
[43] => error_log
[44] => error_prepend_string
[45] => error_reporting
[46] => exif.decode_jis_intel
[47] => exif.decode_jis_motorola
[48] => exif.decode_unicode_intel
[49] => exif.decode_unicode_motorola
[50] => exif.encode_jis
[51] => exif.encode_unicode
[52] => expose_php
[53] => extension_dir
[54] => fastcgi.logging
[55] => file_uploads
[56] => filter.default
[57] => filter.default_flags
[58] => gd.jpeg_ignore_warning
[59] => highlight.bg
[60] => highlight.comment
[61] => highlight.default
[62] => highlight.html
[63] => highlight.keyword
[64] => highlight.string
[65] => html_errors
[66] => iconv.input_encoding
[67] => iconv.internal_encoding
[68] => iconv.output_encoding
[69] => ignore_repeated_errors
[70] => ignore_repeated_source
[71] => ignore_user_abort
[72] => implicit_flush
[73] => include_path
[74] => log_errors
[75] => log_errors_max_len
[76] => magic_quotes_gpc
[77] => magic_quotes_runtime
[78] => magic_quotes_sybase
[79] => mail.force_extra_parameters
[80] => max_execution_time
[81] => max_file_uploads
[82] => max_input_nesting_level
[83] => max_input_time
[84] => mbstring.detect_order
[85] => mbstring.encoding_translation
[86] => mbstring.func_overload
[87] => mbstring.http_input
[88] => mbstring.http_output
[89] => mbstring.internal_encoding
[90] => mbstring.language
[91] => mbstring.strict_detection
[92] => mbstring.substitute_character
[93] => mcrypt.algorithms_dir
[94] => mcrypt.modes_dir
[95] => memory_limit
[96] => mime_magic.debug
[97] => mime_magic.magicfile
[98] => mysql.allow_persistent
[99] => mysql.connect_timeout
[100] => mysql.default_host
[101] => mysql.default_password
[102] => mysql.default_port
[103] => mysql.default_socket
[104] => mysql.default_user
[105] => mysql.max_links
[106] => mysql.max_persistent
[107] => mysql.trace_mode
[108] => mysqli.default_host
[109] => mysqli.default_port
[110] => mysqli.default_pw
[111] => mysqli.default_socket
[112] => mysqli.default_user
[113] => mysqli.max_links
[114] => mysqli.reconnect
[115] => open_basedir
[116] => output_buffering
[117] => output_handler
[118] => pcre.backtrack_limit
[119] => pcre.recursion_limit
[120] => post_max_size
[121] => precision
[122] => realpath_cache_size
[123] => realpath_cache_ttl
[124] => register_argc_argv
[125] => register_globals
[126] => register_long_arrays
[127] => report_memleaks
[128] => report_zend_debug
[129] => safe_mode
[130] => safe_mode_allowed_env_vars
[131] => safe_mode_exec_dir
[132] => safe_mode_gid
[133] => safe_mode_include_dir
[134] => safe_mode_protected_env_vars
[135] => sendmail_from
[136] => sendmail_path
[137] => serialize_precision
[138] => session.auto_start
[139] => session.bug_compat_42
[140] => session.bug_compat_warn
[141] => session.cache_expire
[142] => session.cache_limiter
[143] => session.cookie_domain
[144] => session.cookie_httponly
[145] => session.cookie_lifetime
[146] => session.cookie_path
[147] => session.cookie_secure
[148] => session.entropy_file
[149] => session.entropy_length
[150] => session.gc_divisor
[151] => session.gc_maxlifetime
[152] => session.gc_probability
[153] => session.hash_bits_per_character
[154] => session.hash_function
[155] => session.name
[156] => session.referer_check
[157] => session.save_handler
[158] => session.save_path
[159] => session.serialize_handler
[160] => session.use_cookies
[161] => session.use_only_cookies
[162] => session.use_trans_sid
[163] => short_open_tag
[164] => SMTP
[165] => smtp_port
[166] => soap.wsdl_cache
[167] => soap.wsdl_cache_dir
[168] => soap.wsdl_cache_enabled
[169] => soap.wsdl_cache_limit
[170] => soap.wsdl_cache_ttl
[171] => sql.safe_mode
[172] => suhosin.log.phpscript
[173] => suhosin.log.phpscript.is_safe
[174] => suhosin.log.phpscript.name
[175] => suhosin.log.sapi
[176] => suhosin.log.script
[177] => suhosin.log.script.name
[178] => suhosin.log.syslog
[179] => suhosin.log.syslog.facility
[180] => suhosin.log.syslog.priority
[181] => suhosin.log.use-x-forwarded-for
[182] => track_errors
[183] => unserialize_callback_func
[184] => upload_max_filesize
[185] => upload_tmp_dir
[186] => url_rewriter.tags
[187] => user_agent
[188] => user_dir
[189] => variables_order
[190] => xmlrpc_error_number
[191] => xmlrpc_errors
[192] => y2k_compliance
[193] => zend.ze1_compatibility_mode
[194] => zlib.output_compression
[195] => zlib.output_compression_level
[196] => zlib.output_handler
)
