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<title>Applies a function on the image</title>
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<h1 class="refname">Imagick::functionImage</h1>
<p class="verinfo">(No version information available, might only be in SVN)</p><p class="refpurpose"><span class="refname">Imagick::functionImage</span> — <span class="dc-title">Applies a function on the image</span></p>
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<div class="refsect1 description" id="refsect1-imagick.functionimage-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="modifier">public</span> <span class="type">bool</span> <span class="methodname"><strong>Imagick::functionImage</strong></span>
( <span class="methodparam"><span class="type">int</span> <code class="parameter">$function</code></span>
, <span class="methodparam"><span class="type">array</span> <code class="parameter">$arguments</code></span>
[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$channel</code><span class="initializer"> = Imagick::CHANNEL_DEFAULT</span></span>
] )</div>
<p class="para rdfs-comment">
Applies an arithmetic, relational, or logical expression to an image.
Use these operators to create lighter or darker versions of an image, to increase or decrease contrast in an image,
or to negate the image colors. This method is available if Imagick has been compiled against ImageMagick version 6.4.9 or newer.
</p>
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<div class="refsect1 parameters" id="refsect1-imagick.functionimage-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">function</code></em></span>
<dd>
<p class="para">
Refer to this list of <a href="imagick.constants.html#imagick.constants.function" class="link">function constants</a>
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">arguments</code></em></span>
<dd>
<p class="para">
Array of arguments to pass to this function.
</p>
</dd>
</dt>
</dl>
</p>
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<div class="refsect1 returnvalues" id="refsect1-imagick.functionimage-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns <strong><code>TRUE</code></strong> on success.
</p>
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<div class="refsect1 errors" id="refsect1-imagick.functionimage-errors">
<h3 class="title">Errors/Exceptions</h3>
<p class="para">
Throws ImagickException on error.
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