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The detection function supports functionisfun ($ funName) {return (false! Function_exists ($ funName ))? & Amp; 39; supported & amp; 39;: & amp; 39; & lt; fontcolorred & gt; not supported & lt; font & gt; & amp;

1. // Detection function support
2. Function isfun ($ funName ){
3. Return (false! = Function_exists ($ funName ))? 'Supported ': 'unsupported ';
4. }
5. // Integer computing capability test
6. Function test_int (){
7. $ TimeStart = gettimeofday ();
8. For ($ I = 0; I I <3000000; $ I ++ ){
9. $ T = 1 + 1;
10. }
11. $ TimeEnd = gettimeofday ();
12. $ Time = ($ timeEnd ["usec"]-$ timeStart ["usec"])/1000000 + $ timeEnd ["sec"]-$ timeStart ["sec"];
13. $ Time = round ($ time, 3). "seconds ";
14. Return $ time;
15. }
16. // Floating point computing capability test
17. Function test_float (){
18. // Obtain the circumference rate
19. $ T = pi ();
20. $ TimeStart = gettimeofday ();
21. For ($ I = 0; I I <3000000; $ I ++ ){
22. // Square
23. Sqrt ($ t );
24. }
25. $ TimeEnd = gettimeofday ();
26. $ Time = ($ timeEnd ["usec"]-$ timeStart ["usec"])/1000000 + $ timeEnd ["sec"]-$ timeStart ["sec"];
27. $ Time = round ($ time, 3). "seconds ";
28. Return $ time;
29. }
30. // IO capability test
31. Function test_io (){
32. $ Fp = @ fopen (PHPSELF, "r ");
33. $ TimeStart = gettimeofday ();
34. For ($ I = 0; I I <10000; $ I ++ ){
35. @ Fread ($ fp, 10240 );
36. @ Rewind ($ fp );
37. }
38. $ TimeEnd = gettimeofday ();
39. @ Fclose ($ fp );
40. $ Time = ($ timeEnd ["usec"]-$ timeStart ["usec"])/1000000 + $ timeEnd ["sec"]-$ timeStart ["sec"];
41. $ Time = round ($ time, 3). "seconds ";
42. Return ($ time );
43. }