PHP. Учебник. 2005

Runtime Configuration Пред.

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Глава 9. Runtime Configuration

Содержание
The configuration file
How to change configuration settings

The configuration file

- The configuration file (called php3.ini in

PHP 3, and simply php.ini as of PHP 4)

is read when PHP starts up. For the server module versions of PHP,

this happens only once when the web server is started. For the

CGI and CLI version, it happens on

every invocation.

- php.ini is searched in these locations (in order):

- SAPI module specific location (PHPIniDir directive

in Apache 2, -c command line option in CGI and CLI,

php_ini parameter in NSAPI,

PHP_INI_PATH environment variable in THTTPD)

  • - HKEY_LOCAL_MACHINE\SOFTWARE\PHP\IniFilePath

    (Windows Registry location)

  • - The PHPRC environment variable

  • - Current working directory (for CLI)

  • - The web server's directory (for SAPI modules), or directory of PHP

    (otherwise in Windows)

  • - Windows directory ( C:\windows

    or C:\winnt ) (for Windows), or

    --with-config-file-path compile time option

    - If php-SAPI.ini exists (where SAPI is used SAPI, so the

    filename is e.g. php-cli.ini or

    php-apache.ini ), it's used instead of php.ini.

    SAPI name can be determined by php_sapi_name().

    Замечание:

    The Apache web server changes the directory to root at startup causing

    PHP to attempt to read php.ini from the root filesystem if it exists.

    - The php.ini directives handled by extensions are documented respectively

    on the pages of the extensions themselves. The list of

    the core directives is available in the appendix. Probably not all

    PHP directives are documented in the manual though. For a complete list

    of directives available in your PHP version, please read your well commented

    php.ini file. Alternatively, you may find the

    the latest php.ini from CVS

    helpful too.

    -

    Пример 9-1. php.ini example
    ; any text on a line after an unquoted semicolon (;) is ignored
    

    [php] ; section markers (text within square brackets) are also ignored

    ; Boolean values can be set to either:

    ; true, on, yes

    ; or false, off, no, none

    register_globals = off

    track_errors = yes

    ; you can enclose strings in double-quotes

    include_path = ".:/usr/local/lib/php"

    ; backslashes are treated the same as any other character

    include_path = ".;c:\php\lib"

    - Since PHP 5.1.0, it is possible to refer to existing.ini variables from

    within.ini files. Example: open_basedir = ${open_basedir}

    ":/new/dir".

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