(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)
gmp_cmp — Compare numbers
Returns a positive value if a > b, zero if
a = b and a negative value if a <
b.
示例 #1 gmp_cmp() example
<?php
$cmp1 = gmp_cmp("1234", "1000"); // greater than
$cmp2 = gmp_cmp("1000", "1234"); // less than
$cmp3 = gmp_cmp("1234", "1234"); // equal to
echo "$cmp1 $cmp2 $cmp3\n";
?>
以上例程会输出：
1 -1 0