安装/配置
PHP 手册

运行时配置

这些函数的行为受 php.ini 的影响。

PCRE Configuration Options
Name Default Changeable Changelog
pcre.backtrack_limit "100000" PHP_INI_ALL Available since PHP 5.2.0.
pcre.recursion_limit "100000" PHP_INI_ALL Available since PHP 5.2.0.

有关 PHP_INI_* 常量进一步的细节与定义参见php.ini 配置选项

以下是配置选项的简要解释。

pcre.backtrack_limit integer

PCRE's backtracking limit.

pcre.recursion_limit integer

PCRE's recursion limit. Please note that if you set this value to a high number you may consume all the available process stack and eventually crash PHP (due to reaching the stack size limit imposed by the Operating System).


安装/配置
PHP 手册