Runtime Configuration

The behaviour of these functions is affected by settings in php.ini.

PHP Options/Info 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  
assert.exception "0" PHP_INI_ALL Available as of PHP 7.0.0.
enable_dl "1" PHP_INI_SYSTEM This deprecated feature will certainly be removed in the future.
max_execution_time "30" PHP_INI_ALL  
max_input_time "-1" PHP_INI_PERDIR  
max_input_nesting_level "64" PHP_INI_PERDIR Available as of PHP 5.2.3.
max_input_vars 1000 PHP_INI_PERDIR Available as of PHP 5.3.9.
magic_quotes_gpc "1" PHP_INI_PERDIR Removed in PHP 5.4.0.
magic_quotes_runtime "0" PHP_INI_ALL Removed in PHP 5.4.0.
zend.enable_gc "1" PHP_INI_ALL Available as of PHP 5.3.0.
For further details and definitions of the PHP_INI_* modes, see the Where a configuration setting may be set.

Here's a short explanation of the configuration directives.

assert.active bool

Enable assert() evaluation.

assert.bail bool

Terminate script execution on failed assertions.

assert.warning bool

Issue a PHP warning for each failed assertion.

assert.callback string

User function to call on failed assertions.

assert.quiet_eval bool

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()

assert.exception bool

Issue an AssertionError exception for the failed assertion.

enable_dl bool

This directive allows to turn dynamic loading of PHP extensions with dl() on and off.

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.

max_execution_time int

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.

On non Windows systems, the maximum execution time is not affected by system calls, stream operations etc. Please see the set_time_limit() function for more details.

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.

max_input_time int

This sets the maximum time in seconds a script is allowed to parse input data, like POST and GET. Timing begins at the moment PHP is invoked at the server and ends when execution begins. The default setting is -1, which means that max_execution_time is used instead. Set to 0 to allow unlimited time.

max_input_nesting_level int

Sets the max nesting depth of input variables (i.e. $_GET, $_POST.)

max_input_vars int

How many input variables may be accepted (limit is applied to $_GET, $_POST and $_COOKIE superglobal separately). Use of this directive mitigates the possibility of denial of service attacks which use hash collisions. If there are more input variables than specified by this directive, an E_WARNING is issued, and further input variables are truncated from the request.

magic_quotes_gpc bool
Warning

This feature has been DEPRECATED as of PHP 5.3.0 and REMOVED as of PHP 5.4.0.

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.

See also get_magic_quotes_gpc()

magic_quotes_runtime bool
Warning

This feature has been DEPRECATED as of PHP 5.3.0 and REMOVED as of PHP 5.4.0.

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.

Functions affected by magic_quotes_runtime (does not include functions from PECL):

zend.enable_gc bool

Enables or disables the circular reference collector.

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