Online PHP editor | perf for DP27H

@ 2014-10-14T18:35:01Z

<?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;
  }
echo $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	0.007	0.007	16.30
7.3.0	0.003	0.013	16.44
7.2.13	0.006	0.003	16.65
7.2.12	0.008	0.004	16.51
7.2.11	0.000	0.008	16.57
7.2.10	0.007	0.003	16.66
7.2.9	0.009	0.003	16.68
7.2.8	0.010	0.000	16.82
7.2.7	0.009	0.006	16.72
7.2.6	0.000	0.013	16.81
7.2.5	0.003	0.009	16.66
7.2.4	0.000	0.011	16.82
7.2.3	0.004	0.008	16.53
7.2.2	0.004	0.011	16.79
7.2.1	0.000	0.009	16.73
7.2.0	0.007	0.007	16.70
7.1.25	0.004	0.009	15.46
7.1.7	0.004	0.004	16.79
7.1.6	0.006	0.006	17.20
7.1.5	0.004	0.019	16.79
7.1.0	0.000	0.080	22.41
7.0.20	0.009	0.006	16.28
7.0.14	0.003	0.073	22.00
7.0.10	0.007	0.083	20.16
7.0.9	0.033	0.040	20.16
7.0.8	0.007	0.070	20.02
7.0.7	0.020	0.047	20.02
7.0.6	0.000	0.053	19.89
7.0.5	0.000	0.047	20.36
7.0.4	0.007	0.043	20.15
7.0.3	0.010	0.077	20.11
7.0.2	0.007	0.073	20.18
7.0.1	0.010	0.043	20.03
7.0.0	0.003	0.047	20.14
5.6.28	0.003	0.073	20.95
5.6.25	0.010	0.073	20.63
5.6.24	0.013	0.080	20.55
5.6.23	0.010	0.083	20.55
5.6.22	0.003	0.063	20.62
5.6.21	0.000	0.080	20.68
5.6.20	0.003	0.087	21.02
5.6.19	0.003	0.040	21.01
5.6.18	0.010	0.070	21.08
5.6.17	0.013	0.083	21.07
5.6.16	0.013	0.083	21.02
5.6.15	0.007	0.047	21.09
5.6.14	0.007	0.060	21.09
5.6.13	0.000	0.057	21.23
5.6.12	0.007	0.057	21.17
5.6.11	0.010	0.047	21.09
5.6.10	0.003	0.047	20.97
5.6.9	0.007	0.077	21.03
5.6.8	0.013	0.040	20.45
5.6.7	0.007	0.077	20.55
5.6.6	0.003	0.073	20.39
5.6.5	0.007	0.053	20.45
5.6.4	0.013	0.067	20.54
5.6.3	0.003	0.080	20.36
5.6.2	0.007	0.037	20.35
5.6.1	0.013	0.063	20.49
5.6.0	0.007	0.067	20.45
5.5.38	0.010	0.090	20.41
5.5.37	0.007	0.063	20.42
5.5.36	0.007	0.040	20.47
5.5.35	0.010	0.067	20.46
5.5.34	0.017	0.063	20.95
5.5.33	0.003	0.087	20.94
5.5.32	0.013	0.063	20.93
5.5.31	0.003	0.057	20.88
5.5.30	0.007	0.060	20.84
5.5.29	0.007	0.083	20.92
5.5.28	0.007	0.077	20.91
5.5.27	0.007	0.047	20.98
5.5.26	0.003	0.077	20.88
5.5.25	0.003	0.083	20.71
5.5.24	0.007	0.083	20.37
5.5.23	0.010	0.037	20.37
5.5.22	0.003	0.080	20.07
5.5.21	0.010	0.070	20.27
5.5.20	0.007	0.050	20.21
5.5.19	0.013	0.070	20.24
5.5.18	0.010	0.070	20.30
5.5.16	0.010	0.077	20.29
5.5.15	0.003	0.060	20.20
5.5.14	0.007	0.047	20.31
5.5.13	0.010	0.043	20.20
5.5.12	0.010	0.043	20.31
5.5.11	0.010	0.067	20.31
5.5.10	0.010	0.043	20.20
5.5.9	0.017	0.057	20.22
5.5.8	0.013	0.070	20.22
5.5.7	0.010	0.043	20.15
5.5.6	0.007	0.080	20.16
5.5.5	0.013	0.070	20.20
5.5.4	0.010	0.077	20.22
5.5.3	0.010	0.073	20.09
5.5.2	0.010	0.077	20.02
5.5.1	0.020	0.070	20.17
5.5.0	0.013	0.073	20.19
5.4.45	0.010	0.043	19.47
5.4.44	0.003	0.077	19.43
5.4.43	0.010	0.077	19.27
5.4.42	0.007	0.040	19.19
5.4.41	0.007	0.077	19.23
5.4.40	0.003	0.043	19.19
5.4.39	0.003	0.070	18.85
5.4.38	0.000	0.050	19.16
5.4.37	0.000	0.087	19.23
5.4.36	0.007	0.067	19.22
5.4.35	0.003	0.047	19.07
5.4.34	0.000	0.043	19.21
5.4.32	0.010	0.073	19.03
5.4.31	0.010	0.037	19.23
5.4.30	0.003	0.050	19.15
5.4.29	0.010	0.073	18.90
5.4.28	0.017	0.073	19.03
5.4.27	0.003	0.080	19.04
5.4.26	0.017	0.047	19.05
5.4.25	0.007	0.067	19.06
5.4.24	0.007	0.060	19.05
5.4.23	0.020	0.060	19.20
5.4.22	0.010	0.043	19.04
5.4.21	0.007	0.043	19.22
5.4.20	0.007	0.037	18.87
5.4.19	0.003	0.060	19.12
5.4.18	0.007	0.053	19.16
5.4.17	0.013	0.043	18.88
5.4.16	0.013	0.040	19.21
5.4.15	0.013	0.067	19.12
5.4.14	0.013	0.070	16.47
5.4.13	0.010	0.040	16.51
5.4.12	0.013	0.043	16.48
5.4.11	0.017	0.070	16.52
5.4.10	0.003	0.053	16.43
5.4.9	0.010	0.067	16.32
5.4.8	0.010	0.063	16.47
5.4.7	0.007	0.073	16.38
5.4.6	0.007	0.063	16.47
5.4.5	0.007	0.073	16.52
5.4.4	0.007	0.067	16.35
5.4.3	0.003	0.077	16.45
5.4.2	0.017	0.067	16.53
5.4.1	0.007	0.057	16.49
5.4.0	0.000	0.067	15.68

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