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<html><head><title>pcre2_substring_length_bynumber specification</title></head><body bgcolor="#FFFFFF" text="#00005A" link="#0066FF" alink="#3399FF" vlink="#2222BB"><h1>pcre2_substring_length_bynumber man page</h1><p>Return to the <a href="index.html">PCRE2 index page</a>.</p><p>This page is part of the PCRE2 HTML documentation. It was generatedautomatically from the original man page. If there is any nonsense in it,please consult the man page, in case the conversion went wrong.<br><br><b>SYNOPSIS</b><br><P><b>#include <pcre2.h></b></P><P><b>int pcre2_substring_length_bynumber(pcre2_match_data *<i>match_data</i>,</b><b> uint32_t <i>number</i>, PCRE2_SIZE *<i>length</i>);</b></P><br><b>DESCRIPTION</b><br><P>This function returns the length of a matched substring, identified by number.The arguments are:<pre> <i>match_data</i> The match data block for the match <i>number</i> The substring number <i>length</i> Where to return the length, or NULL</pre>The third argument may be NULL if all you want to know is whether or not asubstring is set. The yield is zero on success, or a negative error codeotherwise. After a partial match, only substring 0 is available.</P><P>There is a complete description of the PCRE2 native API in the<a href="pcre2api.html"><b>pcre2api</b></a>page and a description of the POSIX API in the<a href="pcre2posix.html"><b>pcre2posix</b></a>page.<p>Return to the <a href="index.html">PCRE2 index page</a>.</p>
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