数学扩展
PHP Manual

GNU Multiple Precision

User Contributed Notes

Anonymous 16-Nov-2011 02:38
Be careful with GMP - it considers leading zeros in a number string as meaning the number is in octal, whereas 'bc' doesn't:

  gmp_strval("000100", 10) => 64

  bcmul("000100", "1") => 100

数学扩展
PHP Manual