Adds the left_operand to the right_operand and returns the sum in a string. The optional scale parameter is used to set the number of digits after the decimal place in the result.

Example 1. bcadd() example

 <?php

$a = 1.234;
$b = 5;

echo bcadd($a, $b);     // 6
echo bcadd($a, $b, 4);  // 6.2340

?>

See also bcsub().

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