Differences from POSIX regex
preg_filter
PCRE
PHP Manual
PCRE Functions
Table of Contents
preg_filter
— Perform a regular expression search and replace
preg_grep
— Return array entries that match the pattern
preg_last_error
— Returns the error code of the last PCRE regex execution
preg_match_all
— Perform a global regular expression match
preg_match
— Perform a regular expression match
preg_quote
— Quote regular expression characters
preg_replace_callback
— Perform a regular expression search and replace using a callback
preg_replace
— Perform a regular expression search and replace
preg_split
— Split string by a regular expression
Differences from POSIX regex
preg_filter
PCRE
PHP Manual