Online PHP editor | perf for DPGBY

@ 2014-10-13T07:56:41Z

<?php

function genKey($length) {
  if($length > 0) { 
	  $rand_id="";
		for($i=1; $i <= $length; $i++) {
		 mt_srand((double)microtime() * 1000000);
		 $num = mt_rand(1,72);
		 $rand_id .= assign_rand_value($num);
		}
  }
	return $rand_id;
}

function assign_rand_value($num) {
  switch($num) {
    case "1":
     $rand_value = "a";
    break;
    case "2":
     $rand_value = "b";
    break;
    case "3":
     $rand_value = "c";
    break;
    case "4":
     $rand_value = "d";
    break;
    case "5":
     $rand_value = "e";
    break;
    case "6":
     $rand_value = "f";
    break;
    case "7":
     $rand_value = "g";
    break;
    case "8":
     $rand_value = "h";
    break;
    case "9":
     $rand_value = "i";
    break;
    case "10":
     $rand_value = "j";
    break;
    case "11":
     $rand_value = "k";
    break;
    case "12":
     $rand_value = "l";
    break;
    case "13":
     $rand_value = "m";
    break;
    case "14":
     $rand_value = "n";
    break;
    case "15":
     $rand_value = "o";
    break;
    case "16":
     $rand_value = "p";
    break;
    case "17":
     $rand_value = "q";
    break;
    case "18":
     $rand_value = "r";
    break;
    case "19":
     $rand_value = "s";
    break;
    case "20":
     $rand_value = "t";
    break;
    case "21":
     $rand_value = "u";
    break;
    case "22":
     $rand_value = "v";
    break;
    case "23":
     $rand_value = "w";
    break;
    case "24":
     $rand_value = "x";
    break;
    case "25":
     $rand_value = "y";
    break;
    case "26":
     $rand_value = "z";
    break;
    case "27":
     $rand_value = "0";
    break;
    case "28":
     $rand_value = "1";
    break;
    case "29":
     $rand_value = "2";
    break;
    case "30":
     $rand_value = "3";
    break;
    case "31":
     $rand_value = "4";
    break;
    case "32":
     $rand_value = "5";
    break;
    case "33":
     $rand_value = "6";
    break;
    case "34":
     $rand_value = "7";
    break;
    case "35":
     $rand_value = "8";
    break;
    case "36":
     $rand_value = "9";
    break;
    case "37":
     $rand_value = "*";
    break;
    case "38":
     $rand_value = "~";
    break;
    case "39":
     $rand_value = "-";
    break;
    case "40":
     $rand_value = "|";
    break;
    case "41":
     $rand_value = "^";
    break;
    case "42":
     $rand_value = "%";
    break;
    case "43":
     $rand_value = " ";
    break;
    case "44":
     $rand_value = "_";
    break;
    case "45":
     $rand_value = "+";
    break;
    case "46":
     $rand_value = "=";
    break;
    case "47":
     $rand_value = "A";
    break;
    case "48":
     $rand_value = "B";
    break;
    case "49":
     $rand_value = "C";
    break;
    case "50":
     $rand_value = "D";
    break;
    case "51":
     $rand_value = "E";
    break;
    case "52":
     $rand_value = "F";
    break;
    case "53":
     $rand_value = "G";
    break;
    case "54":
     $rand_value = "H";
    break;
    case "55":
     $rand_value = "I";
    break;
    case "56":
     $rand_value = "J";
    break;
    case "57":
     $rand_value = "K";
    break;
    case "58":
     $rand_value = "L";
    break;
    case "59":
     $rand_value = "M";
    break;
    case "60":
     $rand_value = "N";
    break;
    case "61":
     $rand_value = "O";
    break;
    case "62":
     $rand_value = "P";
    break;
    case "63":
     $rand_value = "Q";
    break;
    case "64":
     $rand_value = "R";
    break;
    case "65":
     $rand_value = "S";
    break;
    case "66":
     $rand_value = "T";
    break;
    case "67":
     $rand_value = "U";
    break;
    case "68":
     $rand_value = "V";
    break;
    case "69":
     $rand_value = "W";
    break;
    case "70":
     $rand_value = "X";
    break;
    case "71":
     $rand_value = "Y";
    break;
    case "72":
     $rand_value = "Z";
    break;
  }
return $rand_value;
}

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

Version	System time (s)	User time (s)	Memory (MiB)
7.3.1	0.006	0.008	16.32
7.3.0	0.005	0.006	16.41
7.2.13	0.011	0.003	16.59
7.2.12	0.009	0.005	16.67
7.2.11	0.006	0.007	16.63
7.2.10	0.009	0.006	16.62
7.2.9	0.003	0.010	16.80
7.2.8	0.005	0.007	16.84
7.2.7	0.007	0.007	16.54
7.2.6	0.003	0.009	16.72
7.2.5	0.006	0.008	16.74
7.2.4	0.003	0.010	16.70
7.2.3	0.005	0.005	16.67
7.2.2	0.003	0.011	16.75
7.2.1	0.002	0.009	16.82
7.2.0	0.007	0.007	16.78
7.1.25	0.005	0.008	15.55
7.1.7	0.003	0.007	16.68
7.1.6	0.003	0.008	17.32
7.1.5	0.003	0.013	16.86
7.1.0	0.000	0.080	22.40
7.0.20	0.003	0.014	16.64
7.0.14	0.000	0.073	21.99
7.0.10	0.000	0.067	20.05
7.0.9	0.003	0.087	19.89
7.0.8	0.010	0.047	20.03
7.0.7	0.017	0.077	20.03
7.0.6	0.013	0.050	19.98
7.0.5	0.023	0.080	20.31
7.0.4	0.010	0.073	20.05
7.0.3	0.010	0.080	20.10
7.0.2	0.007	0.087	20.13
7.0.1	0.007	0.080	20.17
7.0.0	0.010	0.080	19.99
5.6.25	0.007	0.073	20.76
5.6.24	0.010	0.080	20.70
5.6.23	0.007	0.087	20.70
5.6.22	0.003	0.083	20.50
5.6.21	0.007	0.040	20.63
5.6.20	0.013	0.063	21.02
5.6.19	0.003	0.043	21.09
5.6.18	0.013	0.077	21.14
5.6.17	0.013	0.083	21.08
5.6.16	0.000	0.083	21.15
5.6.15	0.013	0.073	21.11
5.6.14	0.010	0.077	21.14
5.6.13	0.017	0.077	21.11
5.6.12	0.010	0.073	21.02
5.6.11	0.013	0.070	21.13
5.6.10	0.013	0.050	21.22
5.6.9	0.010	0.080	21.07
5.6.8	0.010	0.080	20.55
5.6.7	0.010	0.067	20.53
5.6.6	0.007	0.077	20.55
5.6.5	0.007	0.070	20.52
5.6.4	0.010	0.077	20.49
5.6.3	0.007	0.060	20.44
5.6.2	0.007	0.077	20.46
5.6.1	0.007	0.043	20.43
5.6.0	0.007	0.073	20.48
5.5.38	0.007	0.070	20.46
5.5.37	0.017	0.063	20.46
5.5.36	0.017	0.070	20.40
5.5.35	0.007	0.080	20.47
5.5.34	0.010	0.080	20.95
5.5.33	0.007	0.083	20.86
5.5.32	0.013	0.043	20.86
5.5.31	0.013	0.073	20.95
5.5.30	0.003	0.090	20.82
5.5.29	0.017	0.060	20.95
5.5.28	0.007	0.070	20.98
5.5.27	0.007	0.060	20.81
5.5.26	0.017	0.077	20.79
5.5.25	0.007	0.050	20.67
5.5.24	0.013	0.073	20.27
5.5.23	0.013	0.077	20.23
5.5.22	0.013	0.073	20.20
5.5.21	0.010	0.080	20.34
5.5.20	0.013	0.077	20.29
5.5.19	0.010	0.063	20.25
5.5.18	0.007	0.080	20.21
5.5.16	0.007	0.083	20.19
5.5.15	0.017	0.070	20.31
5.5.14	0.010	0.070	20.30
5.5.13	0.007	0.043	20.32
5.5.12	0.007	0.040	20.28
5.5.11	0.007	0.080	20.02
5.5.10	0.017	0.057	20.14
5.5.9	0.013	0.057	20.16
5.5.8	0.013	0.067	20.23
5.5.7	0.003	0.073	20.17
5.5.6	0.007	0.060	20.13
5.5.5	0.003	0.077	20.18
5.5.4	0.010	0.073	20.15
5.5.3	0.000	0.087	20.11
5.5.2	0.000	0.067	20.21
5.5.1	0.013	0.070	20.11
5.5.0	0.007	0.073	20.14
5.4.45	0.000	0.073	19.49
5.4.44	0.007	0.070	19.28
5.4.43	0.000	0.080	19.41
5.4.42	0.010	0.077	19.36
5.4.41	0.010	0.073	19.24
5.4.40	0.017	0.063	19.05
5.4.39	0.013	0.063	19.21
5.4.38	0.003	0.070	19.13
5.4.37	0.010	0.070	19.13
5.4.36	0.007	0.073	19.14
5.4.35	0.010	0.053	19.14
5.4.34	0.013	0.070	19.20
5.4.32	0.010	0.080	19.10
5.4.31	0.003	0.043	19.09
5.4.30	0.000	0.050	19.20
5.4.29	0.010	0.070	18.95
5.4.28	0.007	0.073	19.02
5.4.27	0.007	0.040	19.23
5.4.26	0.007	0.077	19.03
5.4.25	0.007	0.073	19.00
5.4.24	0.010	0.070	19.12
5.4.23	0.007	0.033	19.22
5.4.22	0.007	0.043	19.04
5.4.21	0.007	0.040	19.13
5.4.20	0.007	0.077	19.16
5.4.19	0.003	0.077	19.11
5.4.18	0.010	0.067	18.93
5.4.17	0.010	0.053	19.22
5.4.16	0.003	0.050	19.14
5.4.15	0.000	0.060	19.12
5.4.14	0.000	0.080	16.46
5.4.13	0.007	0.070	16.45
5.4.12	0.007	0.073	16.44
5.4.11	0.010	0.053	16.53
5.4.10	0.010	0.067	16.55
5.4.9	0.003	0.087	16.48
5.4.8	0.007	0.070	16.54
5.4.7	0.017	0.043	16.48
5.4.6	0.007	0.073	16.39
5.4.5	0.007	0.047	16.47
5.4.4	0.007	0.057	16.41
5.4.3	0.003	0.073	16.41
5.4.2	0.007	0.050	16.46
5.4.1	0.010	0.057	16.38
5.4.0	0.013	0.060	15.88

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