Php_i love u (2) php food and clothing parents: Java and PHP efficiency battle one: Fibonacci sequence

Source: Internet
Author: User
Php_i love u (1) php Food and clothing parents: Java and PHP efficiency battle one:

Fibonacci sequence



  • (should be 1, Wiki's formula is wrong!?! )
  • (n?2)

  • This time write the Java code First:

    Class FB {

    static int f1b (int x) {

    if ((0==x) | | | (1==x)) {return 1;}
    int A;
    A=F1B (x-1) +x;
    System.out.println (a);
    return A;
    public static void Main (string[] args) {

    Long Starttime=system.nanotime (); Star
    Long Starttimems=system.currenttimemillis (); //
    DoSomething (); Coding
    F1B (999);
    Long Endtime=system.nanotime (); End
    System.out.println ("Run timming:" + (Endtime-starttime) + "ns");
    Long Endtimems=system.currenttimemillis (); Get End time
    System.out.println ("runing Time:" + (Endtimems-starttimems) + "MS");

    }//class FB

    Code for PHP:

    function Fun1 ($x)//$x)
    if (0== $x) {return 1;echo "\ r \ n";}
    if (1== $x) {return 1;echo "\ r \ n";}

    $b 1= $x + Fun1 ($x-1);
    echo $b 1;
    echo "\ r \ n";
    return $b 1;

    $x 0=999;//100;
    $t 1 = microtime (true);

    The code to test (time) efficiency;

    Fun1 ($x 0);

    $t 2 = Microtime (true);
    Echo (($t 2-$t 1) *1000). ' Ms ';





    MS time:104ms




    Time (MS): 161.00978851318ms


    JAVA vs PHP

    104ms vs 161ms

    1574ms vs 909ms

    Java wins, of course ...

    But consider the Java code to be compiled with Javac again ...

    The PHP code runs directly with Php.exe.

    So 999 times (or 9,999 times) The Fibonacci sequence is calculated (both approximate) 1:1.6 efficiency ratio ... PHP is still acceptable.

    Anyway: PHP I continue love U!

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