(PHP 8 >= 8.4.0)
bcceil — Round up arbitrary precision number
   Returns the next highest integer value by rounding up
   num if necessary.
  
num
   Returns a numeric string representing num rounded up to the nearest integer.
  
   This function throws a ValueError if
   num is not a well-formed BCMath numeric string.
  
示例 #1 bcceil() example
<?php
var_dump(bcceil('4.3'));
var_dump(bcceil('9.999'));
var_dump(bcceil('-3.14'));
?>以上示例会输出:
string(1) "5" string(2) "10" string(2) "-3"
