bcsqrt
Note that it is almost useless to put a integer higher than 6 maybe 7 in the scale parameter.
In some cases this might be needed. But for the simple souls, more than 4 is not required in most of the time.
bcsub
(PHP 4, PHP 5)
bcsub — Subtract one arbitrary precision number from another
Descrierea
string bcsub
( string $left_operand
, string $right_operand
[, int $scale
] )
Subtracts the right_operand from the left_operand .
Parametri
- left_operand
-
The left operand, as a string.
- right_operand
-
The right operand, as a string.
- scale
-
Acest parametru opţional este utilizat pentru a stabili numărul cifrelor după virgulă din rezultat. De asemenea puteţi să stabiliţi parametrul global scale pentru toate funcţiile utilizând bcscale().
Valorile întroarse
The result of the subtraction, as a string.
Exemple
Example #1 bcsub() example
<?php
$a = '1.234';
$b = '5';
echo bcsub($a, $b); // -3
echo bcsub($a, $b, 4); // -3.7660
?>
add a note
User Contributed Notesbcsub
info at DONOTSPAM dot ict-eagle dot eu
07-Aug-2009 07:43
07-Aug-2009 07:43