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<title>Set default scale parameter for all bc math functions</title>
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<div class="refnamediv">
<h1 class="refname">bcscale</h1>
<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">bcscale</span> — <span class="dc-title">Set default scale parameter for all bc math functions</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.bcscale-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">int</span> <span class="methodname"><strong>bcscale</strong></span>
([ <span class="methodparam"><span class="type">int</span> <code class="parameter">$scale</code></span>
] )</div>
<p class="para rdfs-comment">
Sets the default scale parameter for all subsequent calls to bc math functions that
do not explicitly specify a scale parameter.
If <code class="parameter">scale</code> is omitted, the function gets the current
scale factor.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.bcscale-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">scale</code></dt>
<dd>
<p class="para">
The scale factor.
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.bcscale-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns the old scale.
</p>
</div>
<div class="refsect1 changelog" id="refsect1-function.bcscale-changelog">
<h3 class="title">Changelog</h3>
<table class="doctable informaltable">
<thead>
<tr>
<th>Version</th>
<th>Description</th>
</tr>
</thead>
<tbody class="tbody">
<tr>
<td>7.3.0</td>
<td>
<span class="function"><strong>bcscale()</strong></span> can now be used to get the current scale
factor; when used as setter, it now returns the old scale value.
Formerly, <code class="parameter">scale</code> was mandatory, and
<span class="function"><strong>bcscale()</strong></span> always returned <strong><code>TRUE</code></strong>.
</td>
</tr>
</tbody>
</table>
</div>
<div class="refsect1 examples" id="refsect1-function.bcscale-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-4186">
<p><strong>Example #1 <span class="function"><strong>bcscale()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /><br /></span><span style="color: #FF8000">// default scale : 3<br /></span><span style="color: #0000BB">bcscale</span><span style="color: #007700">(</span><span style="color: #0000BB">3</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">bcdiv</span><span style="color: #007700">(</span><span style="color: #DD0000">'105'</span><span style="color: #007700">, </span><span style="color: #DD0000">'6.55957'</span><span style="color: #007700">); </span><span style="color: #FF8000">// 16.007<br /><br />// this is the same without bcscale()<br /></span><span style="color: #007700">echo </span><span style="color: #0000BB">bcdiv</span><span style="color: #007700">(</span><span style="color: #DD0000">'105'</span><span style="color: #007700">, </span><span style="color: #DD0000">'6.55957'</span><span style="color: #007700">, </span><span style="color: #0000BB">3</span><span style="color: #007700">); </span><span style="color: #FF8000">// 16.007<br /><br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
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