<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="function.stream-set-blocking" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>stream_set_blocking</refname>
  <refpurpose>Set blocking/non-blocking mode on a stream</refpurpose>
 </refnamediv>
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>bool</type><methodname>stream_set_blocking</methodname>
   <methodparam><type>resource</type><parameter>stream</parameter></methodparam>
   <methodparam><type>int</type><parameter>mode</parameter></methodparam>
  </methodsynopsis>
  <para>
   Sets blocking or non-blocking mode on a <parameter>stream</parameter>.
  </para>
  <para>
   This function works for any stream that supports non-blocking mode
   (currently, regular files and socket streams).
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>stream</parameter></term>
     <listitem>
      <para>
       The stream.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>mode</parameter></term>
     <listitem>
      <para>
       If <parameter>mode</parameter> is 0, the given stream
       will be switched to non-blocking mode, and if 1, it
       will be switched to blocking mode.  This affects calls like
       <function>fgets</function> and <function>fread</function>
       that read from the stream.  In non-blocking mode an
       <function>fgets</function> call will always return right away
       while in blocking mode it will wait for data to become available
       on the stream.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   &return.success;
  </para>
 </refsect1>

 <refsect1 role="changelog">
  &reftitle.changelog;
  <para>
   <informaltable>
    <tgroup cols="2">
     <thead>
      <row>
       <entry>&Version;</entry>
       <entry>&Description;</entry>
      </row>
     </thead>
     <tbody>
      <row>
       <entry>4.3.0</entry>
       <entry>
        Prior to PHP 4.3.0, this function only worked on socket based streams.
       </entry>
      </row>
     </tbody>
    </tgroup>
   </informaltable>
  </para>
 </refsect1>

 <refsect1 role="notes">
  &reftitle.notes;
  <note>
   <para>
    This function was previously called as
    <function>set_socket_blocking</function> and later
    <function>socket_set_blocking</function> but this usage is deprecated.
   </para>
  </note>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <simplelist>
   <member><function>stream_select</function></member>
  </simplelist>
 </refsect1>
</refentry>

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