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SYNOPSIS

#include <pcre.h>

int pcre_get_substring(const char *subject, int *ovector, int stringcount, int stringnumber, const char **stringptr);


DESCRIPTION

This is a convenience function for extracting a captured substring. The arguments are: 

  subject       Subject that has been successfully matched
  ovector       Offset vector that pcre_exec() used
  stringcount   Value returned by pcre_exec()
  stringnumber  Number of the required substring
  stringptr     Where to put the string pointer

The yield is the length of the substring, PCRE_ERROR_NOMEMORY if sufficient memory could not be obtained, or PCRE_ERROR_NOSUBSTRING if the string number is invalid.

There is a complete description of the PCRE API in the pcreapi page.