 the number of digits after the decimal place in the result. If omitted, it will default to the scale set globally with the <a class="el" href="bcmath_8php.html#a7403a8f4244ac443938de8c6a71e6763">bcscale()</a> function, or fallback to 0 if this has not been set. </p>
<dl class="section return"><dt>Returns</dt><dd>string|null the result as a string, or <b>NULL</b> if <em>modulus</em> is 0 or <em>exponent</em> is negative. </dd></dl>
<dl class="section since"><dt>Since</dt><dd>5.0 </dd>
<dd>
7.0 </dd></dl>

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