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Variables Configuration Options

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Variables Configuration OptionsNameDefaultChangeableChangelogunserialize_callback_funcnullINI_ALLunserialize_max_depth"4096"INI_ALLAvailable as of PHP 7.4.0. Constants

Runtime Runtime

Name	Default	Changeable	Changelog
unserialize_callback_func	null	`INI_ALL`
unserialize_max_depth	"4096"	`INI_ALL`	Available as of PHP 7.4.0.

Constants

Title

unserialize_callback_funcstring

The callback specified is called when unserialize() attempts to use an undefined class. A warning appears if the specified callback function is not defined, or if the callback function fails to define the missing class.

See also unserialize() and Autoloading Classes.

unserialize_max_depthint

The maximum depth of structures permitted during unserialization when using unserialize(), and is intended to prevent stack overflows. This can be disabled by setting unserialize_max_depth=0.

See also unserialize() and Autoloading Classes.

Source: reference/var/ini.xml · from the official PHP manual (php/doc-en)