Home/ Manual/ reference / pcre/ PCRE Configuration Options

PCRE Configuration Options

Guide Edit on GitHub ✎

PCRE Configuration OptionsNameDefaultChangeableChangelogpcre.backtrack_limit"1000000"INI_ALLpcre.recursion_limit"100000"INI_ALLpcre.jit"1"INI_ALL Constants

Runtime Runtime

Name	Default	Changeable
pcre.backtrack_limit	"1000000"	`INI_ALL`
pcre.recursion_limit	"100000"	`INI_ALL`
pcre.jit	"1"	`INI_ALL`

Constants

Title

pcre.backtrack_limitint: PCRE's backtracking limit. Defaults to 100000 for PHP < 5.3.7.
pcre.recursion_limitint: 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).
pcre.jitbool: Whether PCRE's just-in-time compilation is going to be used.

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