reference/sockets/functions/socket-last-error.xml
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14dc7c47365f2b71f6c907a5ba5bccf42534d5a9
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<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.socket-last-error">
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<refentry xml:id="function.socket-last-error" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>socket_last_error</refname>
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<refpurpose>Returns the last error on the socket </refpurpose>
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&reftitle.description;
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<methodsynopsis>
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<type>int</type><methodname>socket_last_error</methodname>
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<methodparam choice="opt"><type>resource</type><parameter>socket</parameter></methodparam>
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<methodparam choice="opt"><type class="union"><type>Socket</type><type>null</type></type><parameter>socket</parameter><initializer>&null;</initializer></methodparam>
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</methodsynopsis>
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<para>
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If a socket resource is passed to this function, the last error which
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occurred on this particular socket is returned. If the socket resource is
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omitted, the error code of the last failed socket function is returned.
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If a <classname>Socket</classname> instance is passed to this function, the last error which
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occurred on this particular socket is returned. If <parameter>socket</parameter> is
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&null;, the error code of the last failed socket function is returned.
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The latter is particularly helpful for functions like
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<function>socket_create</function> which don't return a socket on
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failure and <function>socket_select</function> which can fail for reasons
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<term><parameter>socket</parameter></term>
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<listitem>
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<para>
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A valid socket resource created with <function>socket_create</function>.
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A <classname>Socket</classname> instance created with <function>socket_create</function>.
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</para>
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</listitem>
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</varlistentry>
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</para>
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</refsect1>
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<refsect1 role="changelog">
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&reftitle.changelog;
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<informaltable>
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<tgroup cols="2">
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<thead>
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<row>
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<entry>&Version;</entry>
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<entry>&Description;</entry>
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</row>
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</thead>
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<tbody>
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&sockets.changelog.socket-param;
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<row>
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<entry>8.0.0</entry>
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<entry>
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<parameter>socket</parameter> is nullable now.
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</entry>
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</row>
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</tbody>
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</tgroup>
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</informaltable>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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