这些函数的行为受 php.ini 中的设置影响。
| 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 | 此已废弃的 特性即将 被移除。 |
| max_execution_time | "30" | PHP_INI_ALL | |
| max_input_time | "-1" | PHP_INI_PERDIR | Available since PHP 4.3.0. |
| max_input_nesting_level | "64" | PHP_INI_PERDIR | Available since PHP 4.4.8. Removed in PHP 5.0.0. |
| magic_quotes_gpc | "1" | PHP_INI_PERDIR | PHP_INI_ALL in PHP <= 4.2.3. 此已废弃的 特性即将 被移除。 |
| magic_quotes_runtime | "0" | PHP_INI_ALL | 此已废弃的 特性即将 被移除。 |
| zend.enable_gc | "1" | PHP_INI_ALL | Available since PHP 5.3.0. |
这是配置指令的简短说明。
Enable assert() evaluation.
Terminate script execution on failed assertions.
Issue a PHP warning for each failed assertion.
user function to call on failed assertions
Use 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()
This 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 安全模式. In 安全模式, it's always impossible to use dl().
This 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. When running PHP from the command line the default setting is 0.
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 安全模式. 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 timeout configurations that may also interrupt PHP execution. Apache has a Timeout directive and IIS has a CGI timeout function. Both default to 300 seconds. See your web server documentation for specific details.
This sets the maximum time in seconds a script is allowed to parse input data, like POST and GET. It is measured from the moment of receiving all data on the server to the start of script execution.
Sets the max nesting depth of input variables (i.e. $_GET, $_POST..)
自 PHP 5.3.0 起，已经废弃此特性。强烈建议不要应用此特性 。
Sets 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.
Note:
In PHP 4, also $_ENV variables are escaped.
Note:
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()
自 PHP 5.3.0 起，已经废弃此特性。强烈建议不要应用此特性 。
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.
Functions affected by magic_quotes_runtime (does not include functions from PECL):
Enables or disables the circular reference collector.