(PHP 4, PHP 5, PHP 7)
bccomp — 锟饺斤拷锟斤拷锟斤拷锟斤拷锟解精锟饺碉拷锟斤拷锟斤拷
$left_operand
, string $right_operand
[, int $scale = int
] ) : int
锟斤拷right_operand锟斤拷left_operand锟斤拷锟饺斤拷,
锟斤拷锟揭凤拷锟斤拷一锟斤拷锟斤拷锟斤拷锟侥斤拷锟�.
left_operand锟斤拷叩锟斤拷锟斤拷锟斤拷锟�, 锟斤拷一锟斤拷锟街凤拷锟斤拷.
right_operand锟揭边碉拷锟斤拷锟斤拷锟斤拷, 锟斤拷一锟斤拷锟街凤拷锟斤拷.
scale
锟斤拷选锟斤拷scale锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷指示锟斤拷锟街ｏ拷
锟斤拷使锟斤拷锟斤拷锟斤拷锟饺较碉拷小锟斤拷锟姐部锟斤拷.
锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟饺凤拷锟斤拷0,
锟斤拷叩锟斤拷锟�left_operand锟饺斤拷锟揭边碉拷锟斤拷right_operand锟襟返伙拷1,
锟斤拷锟津返伙拷-1.
Example #1 bccomp() example
<?php
echo bccomp('1', '2') . "\n"; // -1
echo bccomp('1.00001', '1', 3); // 0
echo bccomp('1.00001', '1', 5); // 1
?>