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?>
<div id="mysqli.quickstart.stored-procedures" class="section">
  <h2 class="title">Procedimentos Armazenados</h2>
  <p class="para">
   O banco de dados MySQL suporta procedimentos armazenados. Um procedimento armazenado é uma
   sub-rotina armazenada no catálogo do banco de dados. Aplicações podem chamar e
   executar o procedimento. A declaração <code class="literal">CALL</code>
   da linguagem SQL é usada para executar um procedimento armazenado.
  </p>
  <p class="para">
   <strong>Parâmetro</strong>
  </p>
  <p class="para">
   Procedimentos armazenados podem ter parâmetros <code class="literal">IN</code>,
   <code class="literal">INOUT</code> e <code class="literal">OUT</code>,
   dependendo da versão do MySQL. A interface mysqli não tem nenhuma ciência
   especial dos diferentes tipos de parâmetros.
  </p>
  <p class="para">
   <strong>Parâmetro IN</strong>
  </p>
  <p class="para">
   Parâmetros de entrada são providos pela declaração <code class="literal">CALL</code>.
   Certifique-se que os valores são corretamente escapados.
  </p>
  <p class="para">
   <div class="example" id="example-1">
    <p><strong>Exemplo #1 Chamando um procedimento armazenado</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br /><br />mysqli_report</span><span style="color: #007700">(</span><span style="color: #0000BB">MYSQLI_REPORT_ERROR </span><span style="color: #007700">| </span><span style="color: #0000BB">MYSQLI_REPORT_STRICT</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$mysqli </span><span style="color: #007700">= new </span><span style="color: #0000BB">mysqli</span><span style="color: #007700">(</span><span style="color: #DD0000">"example.com"</span><span style="color: #007700">, </span><span style="color: #DD0000">"user"</span><span style="color: #007700">, </span><span style="color: #DD0000">"password"</span><span style="color: #007700">, </span><span style="color: #DD0000">"database"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"DROP TABLE IF EXISTS test"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"CREATE TABLE test(id INT)"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"DROP PROCEDURE IF EXISTS p"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"CREATE PROCEDURE p(IN id_val INT) BEGIN INSERT INTO test(id) VALUES(id_val); END;"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"CALL p(1)"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"SELECT id FROM test"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">fetch_assoc</span><span style="color: #007700">());</span></span></code></div>
    </div>

    <div class="example-contents"><p>O exemplo acima produzirá:</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
array(1) {
  [&quot;id&quot;]=&gt;
  string(1) &quot;1&quot;
}
</pre></div>
    </div>
   </div>
  </p>
  <p class="para">
   <strong>Parâmetros INOUT/OUT</strong>
  </p>
  <p class="para">
   Os valores dos parâmetros <code class="literal">INOUT</code>/<code class="literal">OUT</code>
   são acessados com o uso de variáveis de sessão.
  </p>
  <p class="para">
   <div class="example" id="example-2">
    <p><strong>Exemplo #2 Uso de variáveis de sessão</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br /><br />mysqli_report</span><span style="color: #007700">(</span><span style="color: #0000BB">MYSQLI_REPORT_ERROR </span><span style="color: #007700">| </span><span style="color: #0000BB">MYSQLI_REPORT_STRICT</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$mysqli </span><span style="color: #007700">= new </span><span style="color: #0000BB">mysqli</span><span style="color: #007700">(</span><span style="color: #DD0000">"example.com"</span><span style="color: #007700">, </span><span style="color: #DD0000">"user"</span><span style="color: #007700">, </span><span style="color: #DD0000">"password"</span><span style="color: #007700">, </span><span style="color: #DD0000">"database"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"DROP PROCEDURE IF EXISTS p"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">'CREATE PROCEDURE p(OUT msg VARCHAR(50)) BEGIN SELECT "Hi!" INTO msg; END;'</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"SET @msg = ''"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"CALL p(@msg)"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"SELECT @msg as _p_out"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">$result</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">fetch_assoc</span><span style="color: #007700">();<br />echo </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #DD0000">'_p_out'</span><span style="color: #007700">];</span></span></code></div>
    </div>

    <div class="example-contents"><p>O exemplo acima produzirá:</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
Hi!
</pre></div>
    </div>
   </div>
  </p>
  <p class="para">
   Desenvolvedores de aplicações e de frameworks podem ser capazes de fornecer uma API mais
   conveniente que use uma mistura de variáveis de sessão e inspeção de catálogos de banco de dados.
   Entretanto, deve ser observado o possível impacto em desempenho de uma solução
   customizada baseada em inspeção de catálogo.
  </p>
  <p class="para">
   <strong>Lidando com conjuntos de resultados</strong>
  </p>
  <p class="para">
   Procedimentos armazenados podem retornar conjuntos de resultados. Resultados retornados de um
   procedimento armazenado não podem ser recebidos corretamente usando <span class="methodname"><a href="mysqli.query.php" class="methodname">mysqli::query()</a></span>.
   A função <span class="methodname"><a href="mysqli.query.php" class="methodname">mysqli::query()</a></span> combina execução de instrução
   e recebimento do primeiro conjunto de dados em um conjunto de resultados com buffer, se houver.
   Porém, haverá conjuntos adicionais de resultados que estarão ocultos
   para o usuário, o que fará com que <span class="methodname"><a href="mysqli.query.php" class="methodname">mysqli::query()</a></span> falhe
   no retorno dos dados esperados.
  </p>
  <p class="para">
   Conjuntos de resultados retornados de um procedimento armazenado são recebidos usando-se
   <span class="methodname"><a href="mysqli.real-query.php" class="methodname">mysqli::real_query()</a></span> ou <span class="methodname"><a href="mysqli.multi-query.php" class="methodname">mysqli::multi_query()</a></span>.
   Ambas as funções permitem receber qualquer número de conjuntos retornados pela
   instrução, como <code class="literal">CALL</code>. Falha no recebimento de todos
   os conjuntos retornados pelo procedimento armazenado causa um erro.
  </p>
  <p class="para">
   <div class="example" id="example-3">
    <p><strong>Exemplo #3 Recebendo resultados de procedimentos armazenados</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br /><br />mysqli_report</span><span style="color: #007700">(</span><span style="color: #0000BB">MYSQLI_REPORT_ERROR </span><span style="color: #007700">| </span><span style="color: #0000BB">MYSQLI_REPORT_STRICT</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$mysqli </span><span style="color: #007700">= new </span><span style="color: #0000BB">mysqli</span><span style="color: #007700">(</span><span style="color: #DD0000">"example.com"</span><span style="color: #007700">, </span><span style="color: #DD0000">"user"</span><span style="color: #007700">, </span><span style="color: #DD0000">"password"</span><span style="color: #007700">, </span><span style="color: #DD0000">"database"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"DROP TABLE IF EXISTS test"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"CREATE TABLE test(id INT)"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"INSERT INTO test(id) VALUES (1), (2), (3)"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"DROP PROCEDURE IF EXISTS p"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">'CREATE PROCEDURE p() READS SQL DATA BEGIN SELECT id FROM test; SELECT id + 1 FROM test; END;'</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">multi_query</span><span style="color: #007700">(</span><span style="color: #DD0000">"CALL p()"</span><span style="color: #007700">);<br /><br />do {<br />    if (</span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">store_result</span><span style="color: #007700">()) {<br />        </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"---\n"</span><span style="color: #007700">);<br />        </span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">fetch_all</span><span style="color: #007700">());<br />        </span><span style="color: #0000BB">$result</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">free</span><span style="color: #007700">();<br />    }<br />} while (</span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">next_result</span><span style="color: #007700">());</span></span></code></div>
    </div>

    <div class="example-contents"><p>O exemplo acima produzirá:</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
---
array(3) {
  [0]=&gt;
  array(1) {
    [0]=&gt;
    string(1) &quot;1&quot;
  }
  [1]=&gt;
  array(1) {
    [0]=&gt;
    string(1) &quot;2&quot;
  }
  [2]=&gt;
  array(1) {
    [0]=&gt;
    string(1) &quot;3&quot;
  }
}
---
array(3) {
  [0]=&gt;
  array(1) {
    [0]=&gt;
    string(1) &quot;2&quot;
  }
  [1]=&gt;
  array(1) {
    [0]=&gt;
    string(1) &quot;3&quot;
  }
  [2]=&gt;
  array(1) {
    [0]=&gt;
    string(1) &quot;4&quot;
  }
}
</pre></div>
    </div>
   </div>
  </p>
  <p class="para">
   <strong>Uso de procedimentos armazenados</strong>
  </p>
  <p class="para">
   Nenhuma manipulação especial é necessária ao usar a interface de procedimentos
   armazenados para receber resultados do mesmo procedimento como no exemplo acima.
   As interfaces para procedimentos armazenados e não armazenados são similares.
   Deve ser observado que pode haver versões do servidor MYSQL que não suportem
   preparação da instrução <code class="literal">CALL</code> da linguagem SQL.
  </p>
  <p class="para">
   <div class="example" id="example-4">
    <p><strong>Exemplo #4 Procedimentos Armazenados e Instruções Preparadas</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br /><br />mysqli_report</span><span style="color: #007700">(</span><span style="color: #0000BB">MYSQLI_REPORT_ERROR </span><span style="color: #007700">| </span><span style="color: #0000BB">MYSQLI_REPORT_STRICT</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$mysqli </span><span style="color: #007700">= new </span><span style="color: #0000BB">mysqli</span><span style="color: #007700">(</span><span style="color: #DD0000">"example.com"</span><span style="color: #007700">, </span><span style="color: #DD0000">"user"</span><span style="color: #007700">, </span><span style="color: #DD0000">"password"</span><span style="color: #007700">, </span><span style="color: #DD0000">"database"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"DROP TABLE IF EXISTS test"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"CREATE TABLE test(id INT)"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"INSERT INTO test(id) VALUES (1), (2), (3)"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"DROP PROCEDURE IF EXISTS p"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">'CREATE PROCEDURE p() READS SQL DATA BEGIN SELECT id FROM test; SELECT id + 1 FROM test; END;'</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$stmt </span><span style="color: #007700">= </span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">prepare</span><span style="color: #007700">(</span><span style="color: #DD0000">"CALL p()"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$stmt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /><br />do {<br />    if (</span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">$stmt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">get_result</span><span style="color: #007700">()) {<br />        </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"---\n"</span><span style="color: #007700">);<br />        </span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">fetch_all</span><span style="color: #007700">());<br />        </span><span style="color: #0000BB">$result</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">free</span><span style="color: #007700">();<br />    }<br />} while (</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">next_result</span><span style="color: #007700">());</span></span></code></div>
    </div>

    <div class="example-contents"><p>O exemplo acima produzirá:</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
---
array(3) {
  [0]=&gt;
  array(1) {
    [0]=&gt;
    int(1)
  }
  [1]=&gt;
  array(1) {
    [0]=&gt;
    int(2)
  }
  [2]=&gt;
  array(1) {
    [0]=&gt;
    int(3)
  }
}
---
array(3) {
  [0]=&gt;
  array(1) {
    [0]=&gt;
    int(2)
  }
  [1]=&gt;
  array(1) {
    [0]=&gt;
    int(3)
  }
  [2]=&gt;
  array(1) {
    [0]=&gt;
    int(4)
  }
}
</pre></div>
    </div>
   </div>
  </p>
  <p class="para">
   Obviamente, o uso da API &#039;bind&#039; para recebimento de dados também é suportado.
  </p>
  <p class="para">
   <div class="example" id="example-5">
    <p><strong>Exemplo #5 Procedimentos Armazenados e Instruções Preparadas usando a API bind</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br /><br />mysqli_report</span><span style="color: #007700">(</span><span style="color: #0000BB">MYSQLI_REPORT_ERROR </span><span style="color: #007700">| </span><span style="color: #0000BB">MYSQLI_REPORT_STRICT</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$mysqli </span><span style="color: #007700">= new </span><span style="color: #0000BB">mysqli</span><span style="color: #007700">(</span><span style="color: #DD0000">"example.com"</span><span style="color: #007700">, </span><span style="color: #DD0000">"user"</span><span style="color: #007700">, </span><span style="color: #DD0000">"password"</span><span style="color: #007700">, </span><span style="color: #DD0000">"database"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"DROP TABLE IF EXISTS test"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"CREATE TABLE test(id INT)"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"INSERT INTO test(id) VALUES (1), (2), (3)"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"DROP PROCEDURE IF EXISTS p"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">'CREATE PROCEDURE p() READS SQL DATA BEGIN SELECT id FROM test; SELECT id + 1 FROM test; END;'</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$stmt </span><span style="color: #007700">= </span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">prepare</span><span style="color: #007700">(</span><span style="color: #DD0000">"CALL p()"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$stmt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /><br />do {<br />    if (</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">store_result</span><span style="color: #007700">()) {<br />        </span><span style="color: #0000BB">$stmt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">bind_result</span><span style="color: #007700">(</span><span style="color: #0000BB">$id_out</span><span style="color: #007700">);<br />        while (</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">fetch</span><span style="color: #007700">()) {<br />            echo </span><span style="color: #DD0000">"id = </span><span style="color: #0000BB">$id_out</span><span style="color: #DD0000">\n"</span><span style="color: #007700">;<br />        }<br />    }<br />} while (</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">next_result</span><span style="color: #007700">());</span></span></code></div>
    </div>

    <div class="example-contents"><p>O exemplo acima produzirá:</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
id = 1
id = 2
id = 3
id = 2
id = 3
id = 4
</pre></div>
    </div>
   </div>
  </p>
  <p class="para">
   <strong>Veja também</strong>
  </p>
  <p class="para">
   <ul class="simplelist">
    <li><span class="methodname"><a href="mysqli.query.php" class="methodname">mysqli::query()</a></span></li>
    <li><span class="methodname"><a href="mysqli.multi-query.php" class="methodname">mysqli::multi_query()</a></span></li>
    <li><span class="methodname"><a href="mysqli.next-result.php" class="methodname">mysqli::next_result()</a></span></li>
    <li><span class="methodname"><a href="mysqli.more-results.php" class="methodname">mysqli::more_results()</a></span></li>
   </ul>
  </p>
 </div><?php manual_footer($setup); ?>