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<div id="function.mktime" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">mktime</h1>
  <p class="verinfo">(PHP 4, PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">mktime</span> &mdash; <span class="dc-title">Obtém um timestamp Unix de uma data</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-function.mktime-description">
  <h3 class="title">Descrição</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>mktime</strong></span>(<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class="methodparam"><span class="type"><a href="language.types.integer.php" class="type int">int</a></span> <code class="parameter">$hour</code></span>,<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class="methodparam"><span class="type"><span class="type"><a href="language.types.null.php" class="type null">?</a></span><span class="type"><a href="language.types.integer.php" class="type int">int</a></span></span> <code class="parameter">$minute</code><span class="initializer"> = <strong><code><a href="reserved.constants.php#constant.null">null</a></code></strong></span></span>,<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class="methodparam"><span class="type"><span class="type"><a href="language.types.null.php" class="type null">?</a></span><span class="type"><a href="language.types.integer.php" class="type int">int</a></span></span> <code class="parameter">$second</code><span class="initializer"> = <strong><code><a href="reserved.constants.php#constant.null">null</a></code></strong></span></span>,<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class="methodparam"><span class="type"><span class="type"><a href="language.types.null.php" class="type null">?</a></span><span class="type"><a href="language.types.integer.php" class="type int">int</a></span></span> <code class="parameter">$month</code><span class="initializer"> = <strong><code><a href="reserved.constants.php#constant.null">null</a></code></strong></span></span>,<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class="methodparam"><span class="type"><span class="type"><a href="language.types.null.php" class="type null">?</a></span><span class="type"><a href="language.types.integer.php" class="type int">int</a></span></span> <code class="parameter">$day</code><span class="initializer"> = <strong><code><a href="reserved.constants.php#constant.null">null</a></code></strong></span></span>,<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class="methodparam"><span class="type"><span class="type"><a href="language.types.null.php" class="type null">?</a></span><span class="type"><a href="language.types.integer.php" class="type int">int</a></span></span> <code class="parameter">$year</code><span class="initializer"> = <strong><code><a href="reserved.constants.php#constant.null">null</a></code></strong></span></span><br>): <span class="type"><span class="type"><a href="language.types.integer.php" class="type int">int</a></span>|<span class="type"><a href="language.types.singleton.php" class="type false">false</a></span></span></div>

  <p class="para rdfs-comment">
   Retorna o timestamp Unix correspondente aos argumentos informados.
   Este timestamp é um inteiro longo contendo o número de segundos
   entre a Época Unix (January 1 1970 00:00:00 GMT), e o horário
   especificado.
  </p>
  <p class="para">
   Quaisquer argumentos opcionais
   omitidos ou <strong><code><a href="reserved.constants.php#constant.null">null</a></code></strong> serão definidos para os valores correntes de acordo
   com a data e horário locais.
  </p>
  <div class="warning"><strong class="warning">Aviso</strong>
   <p class="para">
    Favor notar que os argumentos estão em uma ordem não usual:
    <code class="parameter">month</code>, <code class="parameter">day</code>,
    <code class="parameter">year</code>, e não na ordem mais razoável
    <code class="parameter">year</code>, <code class="parameter">month</code>,
    <code class="parameter">day</code>.
   </p>
  </div>
  <p class="simpara">
   Chamar <span class="function"><strong>mktime()</strong></span> sem argumentos não é suportado,
   e irá resultar em um <span class="classname"><a href="class.argumentcounterror.php" class="classname">ArgumentCountError</a></span>.
   <span class="function"><a href="function.time.php" class="function">time()</a></span> pode ser usada para obter o timestamp atual.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.mktime-parameters">
  <h3 class="title">Parâmetros</h3>
  <p class="para">
   <dl>
    
     <dt><code class="parameter">hour</code></dt>
     <dd>
      <p class="para">
       O número da hora relativa ao início de determinado dia do
       <code class="parameter">month</code>, <code class="parameter">day</code> e <code class="parameter">year</code>.
       Valores negativos referenciam a hora anterior a meia noite do dia em questão.
       Valores maiores que 23 referenciam a hora correspondente no(s) próximo(s) dia(s).
      </p>
     </dd>
    
    
     <dt><code class="parameter">minute</code></dt>
     <dd>
      <p class="para">
       O número de minutos relativos ao início da <code class="parameter">hour</code>.
       Valores negativos referenciam minutos da hora anterior.
       Valores maiores que 23 referenciam os minutos correspondentes a(s) próxima(s) horas(s).
      </p>
     </dd>
    
    
     <dt><code class="parameter">second</code></dt>
     <dd>
      <p class="para">
       O número de segundos relativos ao início do <code class="parameter">minute</code>.
       Valores negativos referenciam segundos do minuto anterior.
       Valores maiores que 23 referenciam os segundos correspondentes ao(s) próximo(s) minuto(s).
      </p>
     </dd>
    
    
     <dt><code class="parameter">month</code></dt>
     <dd>
      <p class="para">
       O número do mês relativo ao fim do anterior.
       Valores de 1 a 12 referenciam o calendário normal de meses do ano em questão.
       Valores menores que 1 (valores negativos, inclusos) referenciam meses do ano anterior em ordem reversa, então 0 é Dezembro, -1 Novembro, e etc.
       Valores maiores que 12 referenciam meses correspondentes ao(s) próximo(s) ano(s).
      </p>
     </dd>
    
    
     <dt><code class="parameter">day</code></dt>
     <dd>
      <p class="para">
       O número do dia relativo ao final do mês anterior.
       Valores de 1 a 28, 29, 30 e 31 (dependendo do mês) corresponde a dias normais no mês.
       Valores menores que 1 (valores negativos, inclusos) corresponde a dias no mês anterior, então 0 é o último dia do mês anterior, -1 é o dia anterior a este, e etc.
       Valores maiores que o número de dias do mês, referenciam dias correspondentes ao(s) próximo(s) mês(es).
      </p>
     </dd>
    
    
     <dt><code class="parameter">year</code></dt>
     <dd>
      <p class="para">
       O número do ano. Pode conter dois ou quatro dígitos, com os valores
       entre 0-69 significando 2000-2069 e 70-100 para 1970-2000. Em
       sistemas aonde o time_t é um inteiro assinado de 32 bit, como é mais
       comum, o faixa de valores para <code class="parameter">year</code>
       é algo entre 1901 e 2038.
      </p>
     </dd>
    
   </dl>
  </p>
 </div>



 <div class="refsect1 returnvalues" id="refsect1-function.mktime-returnvalues">
  <h3 class="title">Valor Retornado</h3>
  <p class="para">
   A função <span class="function"><strong>mktime()</strong></span> retorna o timestamp Unix dos argumentos
   informados ou <strong><code><a href="reserved.constants.php#constant.false">false</a></code></strong> se o timestamp não couber em um inteiro do PHP.
  </p>
 </div>


 <div class="refsect1 changelog" id="refsect1-function.mktime-changelog">
  <h3 class="title">Registro de Alterações</h3>
  <p class="para">
   <table class="doctable informaltable">
    
     <thead>
      <tr>
       <th>Versão</th>
       <th>Descrição</th>
      </tr>

     </thead>

     <tbody class="tbody">
      <tr>
       <td>8.0.0</td>
       <td>
        O parâmetro <code class="parameter">hour</code> não é mais opcional. Se for necessário um timestamp
        Unix, use a função <span class="function"><a href="function.time.php" class="function">time()</a></span>.
       </td>
      </tr>

      <tr>
       <td>8.0.0</td>
       <td>
        <code class="parameter">minute</code>, <code class="parameter">second</code>, <code class="parameter">month</code>,
        <code class="parameter">day</code> e <code class="parameter">year</code> agora podem ser nulos.
       </td>
      </tr>

     </tbody>
    
   </table>

  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.mktime-examples">
  <h3 class="title">Exemplos</h3>
  <p class="para">
   <div class="example" id="example-1">
    <p><strong>Exemplo #1 Exemplo básico da função <span class="function"><strong>mktime()</strong></span></strong></p>
    <div class="example-contents">
<div class="annotation-interactive phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br /></span><span style="color: #FF8000">// Configura o fuso horário padrão a ser utilizado.<br /></span><span style="color: #0000BB">date_default_timezone_set</span><span style="color: #007700">(</span><span style="color: #DD0000">'UTC'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Imprime: July 1, 2000 is on a Saturday<br /></span><span style="color: #007700">echo </span><span style="color: #DD0000">"July 1, 2000 is on a " </span><span style="color: #007700">. </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">"l"</span><span style="color: #007700">, </span><span style="color: #0000BB">mktime</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">7</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">2000</span><span style="color: #007700">)) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// Imprime algo como: 2006-04-05T01:02:03+00:00<br /></span><span style="color: #007700">echo </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">'c'</span><span style="color: #007700">, </span><span style="color: #0000BB">mktime</span><span style="color: #007700">(</span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">2</span><span style="color: #007700">, </span><span style="color: #0000BB">3</span><span style="color: #007700">, </span><span style="color: #0000BB">4</span><span style="color: #007700">, </span><span style="color: #0000BB">5</span><span style="color: #007700">, </span><span style="color: #0000BB">2006</span><span style="color: #007700">)) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;</span></span></code></div>
    </div>

    <div class="example-contents"><p>O exemplo acima produzirá
algo semelhante a:</p></div>
    <div class="example-contents screen">
<div class="annotation-interactive examplescode"><pre class="examplescode">July 1, 2000 is on a Saturday
2006-04-05T01:02:03+00:00</pre>
</div>
    </div>
   </div>
  </p>
  <p class="para">
   <div class="example" id="example-2">
    <p><strong>Exemplo #2 Exemplo da <span class="function"><strong>mktime()</strong></span></strong></p>
    <div class="example-contents"><p>
     <span class="function"><strong>mktime()</strong></span> é útil para a aritmética e validação de data,
     já que calculará automaticamente o valor correto para a entrada fora
     do intervalo. Por exemplo, cada uma das seguintes linhas produzirá a string
     &quot;Jan-01-1998&quot;.
    </p></div>
    <div class="example-contents">
<div class="annotation-interactive phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br />date_default_timezone_set</span><span style="color: #007700">(</span><span style="color: #DD0000">'America/New_York'</span><span style="color: #007700">);<br /><br />echo </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">"c"</span><span style="color: #007700">, </span><span style="color: #0000BB">mktime</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">12</span><span style="color: #007700">, </span><span style="color: #0000BB">32</span><span style="color: #007700">, </span><span style="color: #0000BB">1997</span><span style="color: #007700">)) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />echo </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">"c"</span><span style="color: #007700">, </span><span style="color: #0000BB">mktime</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">13</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">1997</span><span style="color: #007700">)) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />echo </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">"c"</span><span style="color: #007700">, </span><span style="color: #0000BB">mktime</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">1998</span><span style="color: #007700">)) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />echo </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">"c"</span><span style="color: #007700">, </span><span style="color: #0000BB">mktime</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">98</span><span style="color: #007700">)) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;</span></span></code></div>
    </div>

    <div class="example-contents"><p>O exemplo acima produzirá
algo semelhante a:</p></div>
    <div class="example-contents screen">
<div class="annotation-interactive examplescode"><pre class="examplescode">1998-01-01T00:00:00-05:00
1998-01-01T00:00:00-05:00
1998-01-01T00:00:00-05:00
1998-01-01T00:00:00-05:00</pre>
</div>
    </div>
   </div>
  </p>
  <p class="para">
   <div class="example" id="example-3">
    <p><strong>Exemplo #3 Usando mktime para encontrar datas relativas</strong></p>
    <div class="example-contents">
<div class="annotation-interactive phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br />date_default_timezone_set</span><span style="color: #007700">(</span><span style="color: #DD0000">'Asia/Tokyo'</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$tomorrow  </span><span style="color: #007700">= </span><span style="color: #0000BB">mktime</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">"m"</span><span style="color: #007700">)  , </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">"d"</span><span style="color: #007700">)+</span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">"Y"</span><span style="color: #007700">));<br />print </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">'c'</span><span style="color: #007700">, </span><span style="color: #0000BB">$tomorrow</span><span style="color: #007700">) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$lastmonth </span><span style="color: #007700">= </span><span style="color: #0000BB">mktime</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">"m"</span><span style="color: #007700">)-</span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">"d"</span><span style="color: #007700">),   </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">"Y"</span><span style="color: #007700">));<br />print </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">'c'</span><span style="color: #007700">, </span><span style="color: #0000BB">$lastmonth</span><span style="color: #007700">) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$nextyear  </span><span style="color: #007700">= </span><span style="color: #0000BB">mktime</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">"m"</span><span style="color: #007700">),   </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">"d"</span><span style="color: #007700">),   </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">"Y"</span><span style="color: #007700">)+</span><span style="color: #0000BB">1</span><span style="color: #007700">) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />print </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">'c'</span><span style="color: #007700">, </span><span style="color: #0000BB">$nextyear</span><span style="color: #007700">) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;</span></span></code></div>
    </div>

    <div class="example-contents"><p>O exemplo acima produzirá
algo semelhante a:</p></div>
    <div class="example-contents screen">
<div class="annotation-interactive examplescode"><pre class="examplescode">2025-09-30T00:00:00+09:00
2025-08-29T00:00:00+09:00
2026-09-29T00:00:00+09:00</pre>
</div>
    </div>
   </div>
   <blockquote class="note"><p><strong class="note">Nota</strong>: 
    <p class="para">
     Isto pode ser mais confiável que simplesmente adicionar ou substrair o número
     de segundos em um dia ou mês de um timestamp por causa do fuso
     horário.
    </p>
   </p></blockquote>
  </p>
  <p class="para">
   <div class="example" id="example-4">
    <p><strong>Exemplo #4 Último dia do próximo mês</strong></p>
    <div class="example-contents"><p>
     O último dia de um mês informado pode ser expressado como o dia &quot;0&quot; do mês
     seguinte, não o dia -1. Os dois exemplos seguintes produzirão a string
     &quot;The last day in Feb 2000 is: 29&quot;.
    </p></div>
    <div class="example-contents">
<div class="annotation-interactive phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br /><br />$lastday </span><span style="color: #007700">= </span><span style="color: #0000BB">mktime</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">3</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">2000</span><span style="color: #007700">);<br />echo </span><span style="color: #DD0000">'Last day in Feb 2000 is: '</span><span style="color: #007700">, </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">'d'</span><span style="color: #007700">, </span><span style="color: #0000BB">$lastday</span><span style="color: #007700">) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$lastday </span><span style="color: #007700">= </span><span style="color: #0000BB">mktime</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">4</span><span style="color: #007700">, -</span><span style="color: #0000BB">31</span><span style="color: #007700">, </span><span style="color: #0000BB">2000</span><span style="color: #007700">);<br />echo </span><span style="color: #DD0000">'Last day in Feb 2000 is: '</span><span style="color: #007700">, </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">'d'</span><span style="color: #007700">, </span><span style="color: #0000BB">$lastday</span><span style="color: #007700">) . </span><span style="color: #DD0000">"\n"</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="annotation-interactive examplescode"><pre class="examplescode">Last day in Feb 2000 is: 29
Last day in Feb 2000 is: 29</pre>
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 <div class="refsect1 seealso" id="refsect1-function.mktime-seealso">
  <h3 class="title">Veja Também</h3>
  <p class="para">
   <ul class="simplelist">
    <li>A classe <span class="classname"><a href="class.datetimeimmutable.php" class="classname">DateTimeImmutable</a></span></li>
    <li><span class="function"><a href="function.checkdate.php" class="function" rel="rdfs-seeAlso">checkdate()</a> - Valida uma data gregoriana</span></li>
    <li><span class="function"><a href="function.gmmktime.php" class="function" rel="rdfs-seeAlso">gmmktime()</a> - Obt&eacute;m um timestamp Unix para uma data GMT</span></li>
    <li><span class="function"><a href="function.date.php" class="function" rel="rdfs-seeAlso">date()</a> - Formata um timestamp Unix</span></li>
    <li><span class="function"><a href="function.time.php" class="function" rel="rdfs-seeAlso">time()</a> - Retorna o timestamp Unix atual</span></li>
   </ul>
  </p>
 </div>

</div><?php manual_footer($setup); ?>