Return the square root of the operand.
Parameters
- operand
The operand, as a string.
-
scale
This optional parameter is used to set the number
of digits after the decimal place in the result. You can also set the global default scale
for all functions by using bcscale().
Return Values
Returns the square root as a string, or NULL if
operand is negative.
Examples
<?php
echo bcsqrt('2', 3); // 1.414
?>
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