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?>
<div id="function.imagegammacorrect" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">imagegammacorrect</h1>
  <p class="verinfo">(PHP 4, PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">imagegammacorrect</span> &mdash; <span class="dc-title">Apply a gamma correction to a GD image</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-function.imagegammacorrect-description">
  <h3 class="title">Опис</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>imagegammacorrect</strong></span>(<span class="methodparam"><span class="type"><a href="class.gdimage.php" class="type GdImage">GdImage</a></span> <code class="parameter">$image</code></span>, <span class="methodparam"><span class="type"><a href="language.types.float.php" class="type float">float</a></span> <code class="parameter">$input_gamma</code></span>, <span class="methodparam"><span class="type"><a href="language.types.float.php" class="type float">float</a></span> <code class="parameter">$output_gamma</code></span>): <span class="type"><a href="language.types.boolean.php" class="type bool">bool</a></span></div>

  <p class="para rdfs-comment">
   Applies gamma correction to the given gd <code class="parameter">image</code> 
   given an input and an output gamma.
  </p>
 </div>

 <div class="refsect1 parameters" id="refsect1-function.imagegammacorrect-parameters">
  <h3 class="title">Параметри</h3>
  <p class="para">
   <dl>
    <dt><code class="parameter">image</code></dt><dd><p class="para">Об&#039;єкт
<span class="classname"><a href="class.gdimage.php" class="classname">GdImage</a></span>, що повертається однією з функцій створення
зображення, такою як
<span class="function"><a href="function.imagecreatetruecolor.php" class="function">imagecreatetruecolor()</a></span>.</p></dd>
    
     <dt><code class="parameter">input_gamma</code></dt>
     <dd>
      <p class="para">
       The input gamma.
      </p>
     </dd>
    
    
     <dt><code class="parameter">output_gamma</code></dt>
     <dd>
      <p class="para">
       The output gamma.
      </p>
     </dd>
    
   </dl>
  </p>
 </div>

 <div class="refsect1 returnvalues" id="refsect1-function.imagegammacorrect-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.imagegammacorrect-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>8.0.0</td>
 <td>
  Тепер <code class="parameter">image</code> має бути примірником
  <span class="classname"><a href="class.gdimage.php" class="classname">GdImage</a></span>. Раніше очікувався
  <code class="literal">gd</code>-<span class="type"><a href="language.types.resource.php" class="type resource">resource</a></span>.
 </td>
</tr>

    </tbody>
   
  </table>

 </div>


 <div class="refsect1 examples" id="refsect1-function.imagegammacorrect-examples">
  <h3 class="title">Приклади</h3>
  <p class="para">
   <div class="example" id="example-1">
    <p><strong>Приклад #1 <span class="function"><strong>imagegammacorrect()</strong></span> usage</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: #FF8000">// Create image instance<br /></span><span style="color: #0000BB">$im </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreatefromgif</span><span style="color: #007700">(</span><span style="color: #DD0000">'php.gif'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Correct gamma, out = 1.537<br /></span><span style="color: #0000BB">imagegammacorrect</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">1.0</span><span style="color: #007700">, </span><span style="color: #0000BB">1.537</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Save<br /></span><span style="color: #0000BB">imagegif</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #DD0000">'./php_gamma_corrected.gif'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
    </div>

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

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