PHP introductory tutorial: php.ini configuration detailed options_PHP tutorial

php.ini or php3.ini is PHP at startup The configuration file will be read when. The storage path of this file is /usr/local/lib/. In PHP 3.x version the configuration file is php3.ini ; while in PHP 4.x The version is changed to php.ini. If PHP is installed as a server module, it will be read when the Web server starts executing, and will no longer be read after that. Therefore, if you change the configuration, you need to restart the Web server. If you use the independent PHP CGI method, it will be read once every time.
Depending on the current system configuration, you can use phpinfo() to see it. The following is the option configuration


php_value name value
configuration variable name and value. This option requires PHP 4.x version to be used.

php_flag name on|off
Configure flag boolean variable option. This option requires PHP 4.x version to be used.

php_admin_value name value
Configure Apache configuration file variables. The original configuration in .htaccess was changed to this option configuration. This option requires PHP 4.x version to be used.

php_admin_flag name on|off
Configure the boolean variable as the flag. This option requires PHP 4.x version to be used.

asp_tags boolean
Configuration PHP Program Whether to parse tags (tag) with ASP Script syntax . This option is only available after PHP 3.0.4 . For more details, please refer to the embedding method section.

auto_append_file string
Configuring this option allows the specified file to be appended to the original PHP The program will be executed automatically later. If the PHP program uses the exit() function, the specified file will not be executed. The parameter string is the file that specifies automatic execution.

auto_prepend_file string
Configuring this option allows the specified file to be automatically executed before the original PHP program. The parameter string is the file that specifies automatic execution.

cgi_ext string
This option configures the extension name of the CGI program.

display_errors boolean
This option configures whether execution error messages should be displayed in the user's browser on the device.

doc_root string
Configuration server file and PHP file placement root directory.

engine boolean
This option needs to be used in the module mode of apache PHP. Configurable whether to use the PHP engine. In httpd.conf add php3_engine on/off You can also configure whether a directory or a virtual website Use the PHP parser.

error_log string
This option is used to configure the error log file. On UNIX systems the parameter string is the file name. Windows NT will log the event in the Event Viewer log. Windows 95/98 does not support system logging.

error_reporting integer
This option is used to configure the level of system logging. Parameter integer is the series flag of the level, which can be added together. The default value is 7, see the table below
Series Description
1 General Errors
2 General warning
4 Parse error
8 Non-critical warning


open_basedir string
This option is used to configure the lowest level directory that provides PHP access. From the files or directories under the specified directory, the PHP program can access them. Using this option is mainly for system security considerations. The parameter string is the bottom directory node to be restricted. It is worth noting that in the UNIX system, if the file or directory under the node has a symbolic link (symbolic link) , it may compromise the purpose of using this option, so considering the design of the directory is also an important task for Webmaster . The default value is that all files are accessible. After PHP 3.0.7 version, multiple underlying directories can be configured.

gpc_order string
Configuration GET/POST/COOKIE Three modules order and rules. The parameter string is the rule to be configured, for example: configured as "GP" means ignoring cookie, and when the access method (method) is the same, replace with POST GET.

ignore_user_abort string
The default value is Off. Used to configure whether to continue processing when the client is disconnected when the transmission is not completed.

include_path string
is PHP program require, include and fopen_with_path File search path for functions such as. The slash direction is different in UNIX or Windows .

log_errors boolean
Specify whether program errors should be recorded in the log in the file.

magic_quotes_gpc boolean
CONFIGURATION GET/POST/COOKIE Special characters for three modules, including single quotes, double quotes, backslashes, and null characters (NUL) Whether to automatically add backslashes as overflow characters.

magic_quotes_runtime boolean
Configure whether to automatically add backslashes to the returned data when overflowing characters occur.

magic_quotes_sybase boolean
Configuration sybase Single quotation marks in the data should be automatically added with backslashes as overflow characters.

max_execution_time integer
Configure the maximum execution time of the program. The unit is seconds.

memory_limit integer
Configure the maximum amount of memory used by the program.

short_open_tag boolean
configures whether to use the short PHP tag ( ?>). If not used, you must use php as the beginning of the program. If you want the program to comply with XML requires turning off this function.

track_errors boolean
Turn on this option to make the final error message follow the global variable $php_errormsg.

track_vars boolean
Turn on this option to automatically parse the string entered by the user into variables , without having to deal with it yourself.

upload_tmp_dir string
Specifies the temporary path of the uploaded file.

user_dir string
Specifies the path to the user's root directory.

warn_plus_overloading boolean
If this option is turned on, only English periods can be used between strings (.) link, but the plus sign (+) cannot be used to link strings.

SMTP string
In the Windows series operating systems, it is used to specify the SMTP server for Mail function is used. The parameter string is the SMTP server name.

sendmail_from string
Configuration "From: " string for Windows series operating systems use the mail function.

sendmail_path string
Configuration sendmail Program placement path. For example /usr/sbin/sendmail.

safe_mode boolean
Configuration PHP in Execute in safe mode.

safe_mode_exec_dir string
Configure the path for safe mode program execution.

debugger.host string
Specifies the remote debugging server name, which can be IP or Domain Name.

debugger.port string
Configure the port of the remote debugging server (port).

debugger.enabled boolean
Configure whether it can be in debug mode.

enable_dl boolean
This option requires using apacheModule (Apache module) is only valid. Whether the dl() function used to configure PHP works. When the system is in safe mode (safe-mode) , this option enable cannot be used either dl( ) function.

extension_dir string
Configure the path of the dynamic function.

extension string
PHP Dynamic extension function to be loaded at startup.

mysql.allow_persistent boolean
Configure whether to allow MySQL Database persistent connections (persistent connections) will affect mysql_pconnect() Function.

mysql.max_persistent integer
Configure each handler to maintain up to a few MySQL persistent connections.

mysql.max_links integer
Configure the maximum number of handlers to open MySQL Connections, including persistent connections.

msql.allow_persistent boolean
Configure whether to allow mSQL Database persistent connections (persistent connections) will affect msql_pconnect() Function.

msql.max_persistent integer
Configure each handler to keep up to several mSQL Continuous connection.

msql.max_links integer
Configure the maximum number of handlers to open mSQL Connections, including persistent connections.

pgsql.allow_persistent boolean
Configure whether to allow Postgres Database persistent connections (persistent connections) will affect pg_pConnect() Function.

pgsql.max_persistent integer
Configure each handler to maintain up to several Postgres persistent connections.

pgsql.max_links integer

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http://www.bkjia.com/PHPjc/364089.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/364089.htmlTechArticlephp.ini or php3.ini is the configuration file that PHP will read when it starts. The storage path of this file is /usr/local/lib/. In PHP 3.x version, the configuration file is php3.ini; in PHP 4.x version, change...