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<div id="function.substr-compare" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">substr_compare</h1>
  <p class="verinfo">(PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">substr_compare</span> &mdash; <span class="dc-title">İki dizgenin belli bir konumdan itibaren belli uzunluktaki parçalarını bayt bayt karşılaştırır</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-function.substr-compare-description">
  <h3 class="title">Açıklama</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>substr_compare</strong></span>(<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class="methodparam"><span class="type"><a href="language.types.string.php" class="type string">string</a></span> <code class="parameter">$samanlık</code></span>,<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class="methodparam"><span class="type"><a href="language.types.string.php" class="type string">string</a></span> <code class="parameter">$iğne</code></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">$başlangıç</code></span>,<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class="methodparam"><span class="type"><span class="type"><a href="language.types.null.php" class="type null">?</a></span><span class="type"><a href="language.types.integer.php" class="type int">int</a></span></span> <code class="parameter">$uzunluk</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"><a href="language.types.boolean.php" class="type bool">bool</a></span> <code class="parameter">$büyüklük_duyarsız</code><span class="initializer"> = <strong><code><a href="reserved.constants.php#constant.false">false</a></code></strong></span></span><br>): <span class="type"><a href="language.types.integer.php" class="type int">int</a></span></div>

  <p class="para rdfs-comment">
   <span class="function"><strong>substr_compare()</strong></span> işlevi <code class="parameter">samanlık</code>
   dizgesinin <code class="parameter">başlangıç</code>&#039;tan itibaren
   <code class="parameter">uzunluk</code> karakterlik parçasını
   <code class="parameter">iğne</code> dizgesiyle karşılaştırır.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.substr-compare-parameters">
  <h3 class="title">Bağımsız Değişkenler</h3>
  <p class="para">
   <dl>
    
     <dt><code class="parameter">samanlık</code></dt>
     <dd>
      <p class="para">
       Karşılaştırılacak ana dizge.
      </p>
     </dd>
    
    
     <dt><code class="parameter">iğne</code></dt>
     <dd>
      <p class="para">
       Karşılaştırılacak diğer dizge.
      </p>
     </dd>
    
    
     <dt><code class="parameter">başlangıç</code></dt>
     <dd>
      <p class="para">
       Karşılaştırmanın başlayacağı konum. Negatifse, saymaya dizgenin
       sonundan itibaren başlanır.
      </p>
     </dd>
    
    
     <dt><code class="parameter">uzunluk</code></dt>
     <dd>
      <p class="para">
       Karşılaştırılacak uzunluk. <code class="parameter">iğne</code> uzunluğu
       ile (<code class="parameter">samanlık</code> - <code class="parameter">başlangıç</code>)
       uzunluğu karşılaştırıldığında büyük olan uzunluk öntanımlıdır.
      </p>
     </dd>
    
    
     <dt><code class="parameter">büyüklük_duyarsız</code></dt>
     <dd>
      <p class="para">
       <code class="parameter">büyüklük_duyarsız</code> <strong><code><a href="reserved.constants.php#constant.true">true</a></code></strong> ise, karşılaştırmada
       harf büyüklükleri dikkade alınmaz.
      </p>
     </dd>
    
   </dl>
  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.substr-compare-returnvalues">
  <h3 class="title">Dönen Değerler</h3>
  <p class="para">
   Eğer <code class="parameter">samanlık</code> dizgesinin
   <code class="parameter">başlangıç</code> konumundan başlayan parçası
   <code class="parameter">iğne</code> dizgesinden küçükse <code class="literal">-1</code>,
   büyükse <code class="literal">1</code>, ikisi eşitse <code class="literal">0</code> döner.
   Eğer <code class="parameter">uzunluk</code> belirtilmişse ve
   <code class="parameter">samanlık</code> dizgesinin uzunluğundan
   büyükse (PHP 7.2.18 ve 7.3.5 öncesinde eşitse)
   <span class="function"><strong>substr_compare()</strong></span> bir uyarı basar ve <strong><code><a href="reserved.constants.php#constant.false">false</a></code></strong> döndürür.
  </p>
 </div>


 <div class="refsect1 changelog" id="refsect1-function.substr-compare-changelog">
  <h3 class="title">Sürüm Bilgisi</h3>
  <p class="para">
   <table class="doctable informaltable">
    
     <thead>
      <tr>
       <th>Sürüm: </th>
       <th>Açıklama</th>
      </tr>

     </thead>

     <tbody class="tbody">
       <tr>
 <td>8.2.0</td>
 <td>
  Bu işlev artık <code class="literal">-1</code> veya <code class="literal">1</code> döndürüyor,
  evvelce pozitif vaya negatif bir sayı döndürürdü.
 </td>
</tr>


      <tr>
       <td>8.0.0</td>
       <td>
        <code class="parameter">uzunluk</code> artık <strong><code><a href="reserved.constants.php#constant.null">null</a></code></strong> olabiliyor.
       </td>
      </tr>

      <tr>
       <td>7.2.18, 7.3.5</td>
       <td>
        <code class="parameter">başlangıç</code> ile <code class="parameter">samanlık</code>
        uzunlukları artık eşit olabiliyor.
       </td>
      </tr>

     </tbody>
    
   </table>

  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.substr-compare-examples">
  <h3 class="title">Örnekler</h3>
  <p class="para">
   <div class="example" id="example-1">
    <p><strong>Örnek 1 - <span class="function"><strong>substr_compare()</strong></span> örneği</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">echo </span><span style="color: #0000BB">substr_compare</span><span style="color: #007700">(</span><span style="color: #DD0000">"abcde"</span><span style="color: #007700">, </span><span style="color: #DD0000">"bc"</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: #FF8000">// 0<br /></span><span style="color: #007700">echo </span><span style="color: #0000BB">substr_compare</span><span style="color: #007700">(</span><span style="color: #DD0000">"abcde"</span><span style="color: #007700">, </span><span style="color: #DD0000">"de"</span><span style="color: #007700">, -</span><span style="color: #0000BB">2</span><span style="color: #007700">, </span><span style="color: #0000BB">2</span><span style="color: #007700">); </span><span style="color: #FF8000">// 0<br /></span><span style="color: #007700">echo </span><span style="color: #0000BB">substr_compare</span><span style="color: #007700">(</span><span style="color: #DD0000">"abcde"</span><span style="color: #007700">, </span><span style="color: #DD0000">"bcg"</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: #FF8000">// 0<br /></span><span style="color: #007700">echo </span><span style="color: #0000BB">substr_compare</span><span style="color: #007700">(</span><span style="color: #DD0000">"abcde"</span><span style="color: #007700">, </span><span style="color: #DD0000">"BC"</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">true</span><span style="color: #007700">); </span><span style="color: #FF8000">// 0<br /></span><span style="color: #007700">echo </span><span style="color: #0000BB">substr_compare</span><span style="color: #007700">(</span><span style="color: #DD0000">"abcde"</span><span style="color: #007700">, </span><span style="color: #DD0000">"bc"</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">3</span><span style="color: #007700">); </span><span style="color: #FF8000">// 1<br /></span><span style="color: #007700">echo </span><span style="color: #0000BB">substr_compare</span><span style="color: #007700">(</span><span style="color: #DD0000">"abcde"</span><span style="color: #007700">, </span><span style="color: #DD0000">"cd"</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: #FF8000">// -1<br /></span><span style="color: #007700">echo </span><span style="color: #0000BB">substr_compare</span><span style="color: #007700">(</span><span style="color: #DD0000">"abcde"</span><span style="color: #007700">, </span><span style="color: #DD0000">"abc"</span><span style="color: #007700">, </span><span style="color: #0000BB">5</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">); </span><span style="color: #FF8000">// uyarı<br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
    </div>

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


 <div class="refsect1 seealso" id="refsect1-function.substr-compare-seealso">
  <h3 class="title">Ayrıca Bakınız</h3>
  <p class="para">
   <ul class="simplelist">
    <li><span class="function"><a href="function.strncmp.php" class="function" rel="rdfs-seeAlso">strncmp()</a> - İlk n karakteri ikil olarak karşılaştırır</span></li>
   </ul>
  </p>
 </div>


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