php multiply numbers

A symbol can be used to process numbers, strings, and other conditions that require computation. The operator numbers in php are similar to those in C. for experienced programmers, they should be able to smoothly grasp the operator numbers in

1.PHP (foreign name: Php:hypertext Preprocessor, Chinese name: "Hypertext Preprocessor") is a common open source scripting language. The grammar absorbs the C language, Java and Perl features, is conducive to learning, widely used, mainly for the

PHP enthusiasts will love pear, our goal is to introduce pear to PHP developers, I personally think that the application of the Code library development approach has gradually become a trend, in addition to PHP, JSP, like Perl, C + + has a dedicated

PHP enthusiasts will like pear, our goal is to introduce pear to PHP programmer developers, I personally think that referencing the library program development has gradually become a trend, in addition to PHP, JSP, like Perl, C + + also has a

Floating point number in the conversion process will have errors, so the floating-point number can not directly compare its size, generally in comparison with two floating-point number is compared between their difference, if the difference between

Chapter PHP3 Introduction PHP is a server built-in script language that makes it possible to quickly develop dynamic web on UNIX. PHP was conceived by Rasmus Lerdorf in the fall of 1994. The earliest unreleased version was the one he used to keep

Chapter PHP3 Introduction PHP is a server built-in script language that makes it possible to quickly develop dynamic web on UNIX. PHP was conceived by Rasmus Lerdorf in the fall of 1994. The earliest unreleased version was the one he used to keep

Floating-point arithmetic precision problem First look at an example: $a + $b = = $c return true, correct$c-$b = = $a return false, error Why is that?After the operation, the exact content returned when the precision is 20 bits is as

If there is such a number, I do not know if it is possible, but if the function is returned, there will certainly be this big number $num = 101000000411132513120104; Direct echo echo $num;//或者echo (string)$sum; have been 1.0100000041113E+2

BC is the abbreviation for binary calculator. The arguments to the bc* function are the operands plus an optional [int scale], such as String Bcadd (String $left _operand, String $right _operand[, int $scale]), if scale is not provided , the default