Hey, there's only one problem left!!!

7, the use of custom functions to write programs to calculate the running time of the page script. Please use PHP language!!!

Reply to discussion (solution)

Custom write? There's a function available, a blind toss.

function speed () {  static $t;  $r = 0;  if ($t) $r = Microtime (True)-$t;  $t = Microtime (true);  return $r;} Speed (), for ($i =0; $i <10000; $i + +) {for  ($j =0; $j <1000; $j + +);  $a = $i;} echo speed ();

Php5.4.18 is too fast, the number of cycles is less than the simulation

Custom write? There's a function available, a blind toss.



Yes, yes, how do you know I love the blind toss it?

function speed () {  static $t;  $r = 0;  if ($t) $r = Microtime (True)-$t;  $t = Microtime (true);  return $r;} Speed (), for ($i =0; $i <10000; $i + +) {for  ($j =0; $j <1000; $j + +);  $a = $i;} echo speed ();

Php5.4.18 is too fast, the number of cycles is less than the simulation





NN, thank you!!!

function speed () {  static $t;  $r = 0;  if ($t) $r = Microtime (True)-$t;  $t = Microtime (true);  return $r;} Speed (), for ($i =0; $i <10000; $i + +) {for  ($j =0; $j <1000; $j + +);  $a = $i;} echo speed ();

Php5.4.18 is too fast, the number of cycles is less than the simulation




NN, I just ran, there are results, but there are a few lines of code do not understand what it means, in case the teacher asked how to do???

Record the time, before and after a minus, the answer will be.

function speed () {
Static $t; Declaring a static variable
$r = 0;
if ($t) $r = Microtime (True)-$t; Calculates the difference in seconds if it is not the first time to enter
$t = Microtime (true); Saves the current number of seconds (accurate to microseconds)
return $r;
}

function speed () {
Static $t; Declaring a static variable
$r = 0;
if ($t) $r = Microtime (True)-$t; Calculates the difference in seconds if it is not the first time to enter
$t = Microtime (true); Saves the current number of seconds (accurate to microseconds)
return $r;
}



NN, thank you!!!

