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192 <div class=
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193 <h1>Retrieving Error Codes and Messages
<a class=
"headerlink" href=
"#retrieving-error-codes-and-messages" title=
"Permalink to this headline">¶
</a></h1>
194 <div class=
"section" id=
"synopsis">
195 <h2>SYNOPSIS
<a class=
"headerlink" href=
"#synopsis" title=
"Permalink to this headline">¶
</a></h2>
197 <dt>#include
<libmemcached/memcached.h
></dt><dd><p>Compile and link with -lmemcached
</p>
200 <dl class=
"cpp function">
201 <dt id=
"_CPPv420memcached_last_errorPK12memcached_st">
202 <span id=
"_CPPv320memcached_last_errorPK12memcached_st"></span><span id=
"_CPPv220memcached_last_errorPK12memcached_st"></span><span id=
"memcached_last_error__memcached_stCP"></span><a class=
"reference internal" href=
"memcached_return_t.html#_CPPv418memcached_return_t" title=
"memcached_return_t">memcached_return_t
</a> <code class=
"sig-name descname">memcached_last_error
</code><span class=
"sig-paren">(
</span><em class=
"property">const
</em> <a class=
"reference internal" href=
"memcached_create.html#_CPPv412memcached_st" title=
"memcached_st">memcached_st
</a> *
<em>ptr
</em><span class=
"sig-paren">)
</span><a class=
"headerlink" href=
"#_CPPv420memcached_last_errorPK12memcached_st" title=
"Permalink to this definition">¶
</a><br /></dt>
203 <dd><dl class=
"field-list simple">
204 <dt class=
"field-odd">Parameters
</dt>
205 <dd class=
"field-odd"><p><strong>ptr
</strong> -- pointer to an initialized
<a class=
"reference internal" href=
"memcached_create.html#_CPPv412memcached_st" title=
"memcached_st"><code class=
"xref cpp cpp-any docutils literal notranslate"><span class=
"pre">memcached_st
</span></code></a> struct
</p>
207 <dt class=
"field-even">Returns
</dt>
208 <dd class=
"field-even"><p><a class=
"reference internal" href=
"memcached_return_t.html#_CPPv418memcached_return_t" title=
"memcached_return_t"><code class=
"xref cpp cpp-any docutils literal notranslate"><span class=
"pre">memcached_return_t
</span></code></a> indicating success of last operation
</p>
213 <dl class=
"cpp function">
214 <dt id=
"_CPPv428memcached_last_error_messagePK12memcached_st">
215 <span id=
"_CPPv328memcached_last_error_messagePK12memcached_st"></span><span id=
"_CPPv228memcached_last_error_messagePK12memcached_st"></span><span id=
"memcached_last_error_message__memcached_stCP"></span><em class=
"property">const
</em> char *
<code class=
"sig-name descname">memcached_last_error_message
</code><span class=
"sig-paren">(
</span><em class=
"property">const
</em> <a class=
"reference internal" href=
"memcached_create.html#_CPPv412memcached_st" title=
"memcached_st">memcached_st
</a> *
<em>ptr
</em><span class=
"sig-paren">)
</span><a class=
"headerlink" href=
"#_CPPv428memcached_last_error_messagePK12memcached_st" title=
"Permalink to this definition">¶
</a><br /></dt>
216 <dd><dl class=
"field-list simple">
217 <dt class=
"field-odd">Parameters
</dt>
218 <dd class=
"field-odd"><p><strong>ptr
</strong> -- pointer to an initialized
<a class=
"reference internal" href=
"memcached_create.html#_CPPv412memcached_st" title=
"memcached_st"><code class=
"xref cpp cpp-any docutils literal notranslate"><span class=
"pre">memcached_st
</span></code></a> struct
</p>
220 <dt class=
"field-even">Returns
</dt>
221 <dd class=
"field-even"><p>message describing the status of last operation
</p>
226 <dl class=
"cpp function">
227 <dt id=
"_CPPv426memcached_last_error_errnoPK12memcached_st">
228 <span id=
"_CPPv326memcached_last_error_errnoPK12memcached_st"></span><span id=
"_CPPv226memcached_last_error_errnoPK12memcached_st"></span><span id=
"memcached_last_error_errno__memcached_stCP"></span>int
<code class=
"sig-name descname">memcached_last_error_errno
</code><span class=
"sig-paren">(
</span><em class=
"property">const
</em> <a class=
"reference internal" href=
"memcached_create.html#_CPPv412memcached_st" title=
"memcached_st">memcached_st
</a> *
<em>ptr
</em><span class=
"sig-paren">)
</span><a class=
"headerlink" href=
"#_CPPv426memcached_last_error_errnoPK12memcached_st" title=
"Permalink to this definition">¶
</a><br /></dt>
229 <dd><dl class=
"field-list simple">
230 <dt class=
"field-odd">Parameters
</dt>
231 <dd class=
"field-odd"><p><strong>ptr
</strong> -- pointer to an initialized
<a class=
"reference internal" href=
"memcached_create.html#_CPPv412memcached_st" title=
"memcached_st"><code class=
"xref cpp cpp-any docutils literal notranslate"><span class=
"pre">memcached_st
</span></code></a> struct
</p>
233 <dt class=
"field-even">Returns
</dt>
234 <dd class=
"field-even"><p><em class=
"manpage"><a class=
"manpage reference external" href=
"https://linux.die.net/man/3/errno">errno(
3)
</a></em> (if any) of last operation
</p>
240 <div class=
"section" id=
"description">
241 <h2>DESCRIPTION
<a class=
"headerlink" href=
"#description" title=
"Permalink to this headline">¶
</a></h2>
242 <p>Retrieve error codes and messages.
</p>
244 <div class=
"section" id=
"return-value">
245 <h2>RETURN VALUE
<a class=
"headerlink" href=
"#return-value" title=
"Permalink to this headline">¶
</a></h2>
246 <p><a class=
"reference internal" href=
"#_CPPv420memcached_last_errorPK12memcached_st" title=
"memcached_last_error"><code class=
"xref cpp cpp-any docutils literal notranslate"><span class=
"pre">memcached_last_error()
</span></code></a> returns the last error code.
</p>
247 <p><a class=
"reference internal" href=
"#_CPPv428memcached_last_error_messagePK12memcached_st" title=
"memcached_last_error_message"><code class=
"xref cpp cpp-any docutils literal notranslate"><span class=
"pre">memcached_last_error_message()
</span></code></a> returns the last error message. If this error
248 came from a specific server, its hostname and port will be provided in the error
249 message. Any error message will be returned as 'const char *' which does not
250 need to be de-allocated. NULL will be returned if no error has occurred.
</p>
251 <p><a class=
"reference internal" href=
"#_CPPv426memcached_last_error_errnoPK12memcached_st" title=
"memcached_last_error_errno"><code class=
"xref cpp cpp-any docutils literal notranslate"><span class=
"pre">memcached_last_error_errno()
</span></code></a> returns any last local error code obtained from
252 <em class=
"manpage"><a class=
"manpage reference external" href=
"https://linux.die.net/man/3/errno">errno(
3)
</a></em>.
</p>
254 <div class=
"section" id=
"see-also">
255 <h2>SEE ALSO
<a class=
"headerlink" href=
"#see-also" title=
"Permalink to this headline">¶
</a></h2>
257 <li><p><em class=
"manpage"><a class=
"manpage reference external" href=
"https://linux.die.net/man/1/memcached">memcached(
1)
</a></em></p></li>
258 <li><p><em class=
"manpage"><a class=
"manpage reference external" href=
"https://linux.die.net/man/3/errno">errno(
3)
</a></em></p></li>
259 <li><p><a class=
"reference internal" href=
"../libmemcached.html"><span class=
"doc">C/C++ Client Library for memcached
</span></a></p></li>
260 <li><p><a class=
"reference internal" href=
"memcached_strerror.html"><span class=
"doc">Converting Error Codes to Messages
</span></a></p></li>
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