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<title>pcre_exec specification</title>
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<br><b>
SYNOPSIS
</b><br>
<P>
<b>#include <pcre.h></b>
</P>
<P>
<b>int pcre_exec(const pcre *<i>code</i>, const pcre_extra *<i>extra</i>,</b>
<b>const char *<i>subject</i>, int <i>length</i>, int <i>startoffset</i>,</b>
<b>int <i>options</i>, int *<i>ovector</i>, int <i>ovecsize</i>);</b>
</P>
<br><b>
DESCRIPTION
</b><br>
<P>
This function matches a compiled regular expression against a given subject
string, and returns offsets to capturing subexpressions. Its arguments are:
</P>
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<pre>
<i>code</i> Points to the compiled pattern
<i>extra</i> Points to an associated <b>pcre_extra</b> structure,
or is NULL
<i>subject</i> Points to the subject string
<i>length</i> Length of the subject string, in bytes
<i>startoffset</i> Offset in bytes in the subject at which to
start matching
<i>options</i> Option bits
<i>ovector</i> Points to a vector of ints for result offsets
<i>ovecsize</i> Size of the vector (a multiple of 3)
</PRE>
</P>
<P>
The options are:
</P>
<P>
<pre>
PCRE_ANCHORED Match only at the first position
PCRE_NOTBOL Subject is not the beginning of a line
PCRE_NOTEOL Subject is not the end of a line
PCRE_NOTEMPTY An empty string is not a valid match
PCRE_NO_UTF8_CHECK Do not check the subject for UTF-8
validity (only relevant if PCRE_UTF8
was set at compile time)
</PRE>
</P>
<P>
There is a complete description of the PCRE API in the
<a href="pcreapi.html"><b>pcreapi</b></a>
page.
