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PCRE2_SUBS...TH_BYNUMBER(3) Library Functions Manual PCRE2_SUBS...TH_BYNUMBER(3)

NAME
     PCRE2 - Perl-compatible regular expressions (revised API)

SYNOPSIS

     #include <pcre2.h>

     int pcre2_substring_length_bynumber(pcre2_match_data *match_data,
       uint32_t number, PCRE2_SIZE *length);

DESCRIPTION

     This function returns the length of a matched substring, identified by num-
     ber.  The arguments are:

       match_data   The match data block for the match
       number	    The substring number
       length	    Where to return the length, or NULL

     The  third argument may be NULL if all you want to know is whether or not a
     substring is set. The yield is zero on success, or a  negative  error  code
     otherwise. After a partial match, only substring 0 is available.

     There  is	a  complete  description of the PCRE2 native API in the pcre2api
     page and a description of the POSIX API in the pcre2posix page.

PCRE2 10.47			22 December 2014     PCRE2_SUBS...TH_BYNUMBER(3)

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