Manuál PHP | ||
---|---|---|
Předcházející | Další |
Tyto funkce vám umožňují zjistit řadu informací o vlastním PHP, jako je konfigurace, nahraná rozšíření, verze a mnohé další. Naleznete zde také funkce, které vám umožňí nastavit volby běžícího PHP. Pravděporobně nejznámější funkce PHP - phpinfo() - se nachází právě v této sekci.
Tyto funkce jsou k dispozici jako součást standardního modulu, který je vždy dostupný.
K používání těchto funkcí není třeba žádná instalace, jsou součástí jádra PHP.
Chování těchto funkcí je ovlivněno nastavením parametrů v php.ini.
Tabulka 1. PHP Options/Inf Configuration Options
Name | Default | Changeable | Changelog |
---|---|---|---|
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 | |
enable_dl | "1" | PHP_INI_SYSTEM | |
max_execution_time | "30" | PHP_INI_ALL | |
max_input_time | "-1" | PHP_INI_PERDIR | 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 |
Zde je stručný popis konfiguračních direktiv.
assert.active
booleanEnable assert() evaluation.
assert.bail
booleanTerminate script execution on failed assertions.
assert.warning
booleanIssue a PHP warning for each failed assertion.
assert.callback
stringuser function to call on failed assertions
assert.quiet_eval
booleanUse the current setting of error_reporting() during assertion expression evaluation. If enabled, no errors are shown (implicit error_reporting(0)) while evaluation. If disabled, errors are shown according to the settings of error_reporting()
enable_dl
booleanThis directive is really only useful in the Apache module version of PHP. You can turn dynamic loading of PHP extensions with dl() on and off per virtual server or per directory.
The main reason for turning dynamic loading off is security. With dynamic loading, it's possible to ignore all open_basedir restrictions. The default is to allow dynamic loading, except when using bezpečný režim. In bezpečný režim, it's always impossible to use dl().
max_execution_time
integerThis sets the maximum time in seconds a script is allowed to run before it is terminated by the parser. This helps prevent poorly written scripts from tying up the server. The default setting is 30.
The maximum execution time is not affected by system calls, stream operations etc. Please see the set_time_limit() function for more details.
You can not change this setting with ini_set() when running in bezpečný režim. The only workaround is to turn off safe mode or by changing the time limit in the php.ini.
Your web server can have other timeouts. E.g. Apache has Timeout directive, IIS has CGI timeout function, both default to 300 seconds. See the web server documentation for meaning of it.
max_input_time
integerThis sets the maximum time in seconds a script is allowed to parse input data, like POST, GET and file uploads.
magic_quotes_gpc
booleanSets the magic_quotes state for GPC (Get/Post/Cookie) operations. When magic_quotes are on, all ' (single-quote), " (double quote), \ (backslash) and NUL's are escaped with a backslash automatically.
Poznámka: If the magic_quotes_sybase directive is also ON it will completely override magic_quotes_gpc. Having both directives enabled means only single quotes are escaped as ''. Double quotes, backslashes and NUL's will remain untouched and unescaped.
See also get_magic_quotes_gpc()
magic_quotes_runtime
boolean
If magic_quotes_runtime
is enabled,
most functions that return data from any sort of external
source including databases and text files will have quotes
escaped with a backslash. If
magic_quotes_sybase
is also on, a single-quote is escaped with a single-quote instead
of a backslash.
Toto rozšíření nemá definován žádný typ prostředku (resource).
Konstanty z tohoto seznamu jsou vždy dostupné jako součást jádra PHP.
Tabulka 2. Pre-defined phpcredits() constants
Constant | Value | Description |
---|---|---|
CREDITS_GROUP | 1 | A list of the core developers |
CREDITS_GENERAL | 2 | General credits: Language design and concept, PHP authors and SAPI module. |
CREDITS_SAPI | 4 | A list of the server API modules for PHP, and their authors. |
CREDITS_MODULES | 8 | A list of the extension modules for PHP, and their authors. |
CREDITS_DOCS | 16 | The credits for the documentation team. |
CREDITS_FULLPAGE | 32 | Usually used in combination with the other flags. Indicates that a complete stand-alone HTML page needs to be printed including the information indicated by the other flags. |
CREDITS_QA | 64 | The credits for the quality assurance team. |
CREDITS_ALL | -1 | All the credits, equivalent to using: CREDITS_DOCS + CREDITS_GENERAL + CREDITS_GROUP + CREDITS_MODULES + CREDITS_QA CREDITS_FULLPAGE. It generates a complete stand-alone HTML page with the appropriate tags. This is the default value. |
Tabulka 3. phpinfo() constants
Constant | Value | Description |
---|---|---|
INFO_GENERAL | 1 | The configuration line, php.ini location, build date, Web Server, System and more. |
INFO_CREDITS | 2 | PHP Credits. See also phpcredits(). |
INFO_CONFIGURATION | 4 | Current Local and Master values for PHP directives. See also ini_get(). |
INFO_MODULES | 8 | Loaded modules and their respective settings. |
INFO_ENVIRONMENT | 16 |
Environment Variable information that's also available in
$_ENV .
|
INFO_VARIABLES | 32 | Shows all predefined variables from EGPCS (Environment, GET, POST, Cookie, Server). |
INFO_LICENSE | 64 | PHP License information. See also the license faq. |
INFO_ALL | -1 | Shows all of the above. This is the default value. |
Předcházející | Domů | Další |
PharFileInfo->setUncompressed | Nahoru | assert_options |