Raise left_operand
to the power right_operand
.
The left operand, as a string.
The right operand, as a string.
This optional parameter is used to set the number of digits after the decimal place in the result. If omitted, it will default to the scale set globally with the bcscale() function, or fallback to 0 if this has not been set.
Returns the result as a string.
bcpow() may return a result with fewer digits after the decimal point than the scale
parameter would indicate. This only occurs when the result doesn't require all of the precision allowed by the scale
. For example:
Example #2 bcpow() scale example
<?php echo bcpow('5', '2', 2); // prints "25", not "25.00" ?>
<?php echo bcpow('4.2', '3', 2); // 74.08 ?>
<?php echo bcpow('5', '2', 2); // prints "25", not "25.00" ?>
bcsqrt() -
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