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<div id="function.pg-lo-export" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">pg_lo_export</h1>
  <p class="verinfo">(PHP 4 &gt;= 4.2.0, PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">pg_lo_export</span> &mdash; <span class="dc-title">Export a large object to file</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-function.pg-lo-export-description">
  <h3 class="title">Опис</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>pg_lo_export</strong></span>(<span class="methodparam"><span class="type"><a href="class.pgsql-connection.php" class="type PgSql\Connection">PgSql\Connection</a></span> <code class="parameter">$connection</code><span class="initializer"> = ?</span></span>, <span class="methodparam"><span class="type"><a href="language.types.integer.php" class="type int">int</a></span> <code class="parameter">$oid</code></span>, <span class="methodparam"><span class="type"><a href="language.types.string.php" class="type string">string</a></span> <code class="parameter">$pathname</code></span>): <span class="type"><a href="language.types.boolean.php" class="type bool">bool</a></span></div>

  <p class="para rdfs-comment">
   <span class="function"><strong>pg_lo_export()</strong></span> takes a large object in a
   PostgreSQL database and saves its contents to a file on the local
   filesystem.
  </p>
  <p class="para">
   To use the large object interface, it is necessary to
   enclose it within a transaction block.
  </p>
  <blockquote class="note"><p><strong class="note">Зауваження</strong>: 
   <p class="para">
    This function used to be called <span class="function"><strong>pg_loexport()</strong></span>.
   </p>
  </p></blockquote>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.pg-lo-export-parameters">
  <h3 class="title">Параметри</h3>
  <p class="para">
   <dl>
    
     <dt><code class="parameter">connection</code></dt>
     <dd>
      <p class="para">Примірник
<span class="classname"><a href="class.pgsql-connection.php" class="classname">PgSql\Connection</a></span>. Якщо параметр
<code class="parameter">connection</code> не визначено, то виконується стандартне
з&#039;єднання, тобто останнє, виконане функцією <span class="function"><a href="function.pg-connect.php" class="function">pg_connect()</a></span>
або <span class="function"><a href="function.pg-pconnect.php" class="function">pg_pconnect()</a></span>. <div class="warning"><strong class="warning">Увага</strong><p class="simpara">Починаючи з PHP 8.1.0,
використання стандартного з&#039;єднання є
застарілим.</p></div></p>
     </dd>
    
    
     <dt><code class="parameter">oid</code></dt>
     <dd>
      <p class="para">
       The <var class="varname">OID</var> of the large object in the database.
      </p>
     </dd>
    
    
     <dt><code class="parameter">pathname</code></dt>
     <dd>
      <p class="para">
       The full path and file name of the file in which to write the
       large object on the client filesystem.
      </p>
     </dd>
    
   </dl>
  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.pg-lo-export-returnvalues">
  <h3 class="title">Значення, що повертаються</h3>
  <p class="para">
   Повертає <strong><code><a href="reserved.constants.php#constant.true">true</a></code></strong> у разі успіху або <strong><code><a href="reserved.constants.php#constant.false">false</a></code></strong> в разі помилки.
  </p>
 </div>


 <div class="refsect1 changelog" id="refsect1-function.pg-lo-export-changelog">
  <h3 class="title">Журнал змін</h3>
  <table class="doctable informaltable">
   
    <thead>
     <tr>
      <th>Версія</th>
      <th>Опис</th>
     </tr>

    </thead>

    <tbody class="tbody">
     <tr>
 <td>8.1.0</td>
 <td>
  Тепер параметр <code class="parameter">connection</code> має бути примірником
  <span class="classname"><a href="class.pgsql-connection.php" class="classname">PgSql\Connection</a></span>. Раніше очікувався <a href="language.types.resource.php" class="link">resource</a>.
 </td>
</tr>

    </tbody>
   
  </table>

 </div>

 
 <div class="refsect1 examples" id="refsect1-function.pg-lo-export-examples">
  <h3 class="title">Приклади</h3>
  <p class="para">
   <div class="example" id="example-1">
    <p><strong>Приклад #1 <span class="function"><strong>pg_lo_export()</strong></span> example</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br />   $database </span><span style="color: #007700">= </span><span style="color: #0000BB">pg_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"dbname=jacarta"</span><span style="color: #007700">);<br />   </span><span style="color: #0000BB">pg_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$database</span><span style="color: #007700">, </span><span style="color: #DD0000">"begin"</span><span style="color: #007700">);<br />   </span><span style="color: #0000BB">$oid </span><span style="color: #007700">= </span><span style="color: #0000BB">pg_lo_create</span><span style="color: #007700">(</span><span style="color: #0000BB">$database</span><span style="color: #007700">);<br />   </span><span style="color: #0000BB">$handle </span><span style="color: #007700">= </span><span style="color: #0000BB">pg_lo_open</span><span style="color: #007700">(</span><span style="color: #0000BB">$database</span><span style="color: #007700">, </span><span style="color: #0000BB">$oid</span><span style="color: #007700">, </span><span style="color: #DD0000">"w"</span><span style="color: #007700">);<br />   </span><span style="color: #0000BB">pg_lo_write</span><span style="color: #007700">(</span><span style="color: #0000BB">$handle</span><span style="color: #007700">, </span><span style="color: #DD0000">"large object data"</span><span style="color: #007700">);<br />   </span><span style="color: #0000BB">pg_lo_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$handle</span><span style="color: #007700">);<br />   </span><span style="color: #0000BB">pg_lo_export</span><span style="color: #007700">(</span><span style="color: #0000BB">$database</span><span style="color: #007700">, </span><span style="color: #0000BB">$oid</span><span style="color: #007700">, </span><span style="color: #DD0000">'/tmp/lob.dat'</span><span style="color: #007700">);<br />   </span><span style="color: #0000BB">pg_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$database</span><span style="color: #007700">, </span><span style="color: #DD0000">"commit"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
    </div>

   </div> 
  </p>
 </div>

 
 <div class="refsect1 seealso" id="refsect1-function.pg-lo-export-seealso">
  <h3 class="title">Прогляньте також</h3>
  <p class="para">
   <ul class="simplelist">
    <li><span class="function"><a href="function.pg-lo-import.php" class="function" rel="rdfs-seeAlso">pg_lo_import()</a> - Import a large object from file</span></li>
   </ul>
  </p>
 </div>

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