3v4l.org

run code in 300+ PHP versions simultaneously
<?php $length = 60; $result = genKey($length); 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).

VersionSystem time (s)User time (s)Memory (MiB)
7.4.10.0070.01314.75
7.4.00.0120.00614.98
7.3.130.0070.01114.75
7.3.120.0070.01115.09
7.3.110.0000.02114.63
7.3.100.0110.00015.00
7.3.90.0090.00614.77
7.3.80.0070.00714.78
7.3.70.0030.00714.78
7.3.60.0070.00715.07
7.3.50.0120.00314.84
7.3.40.0030.01014.61
7.3.30.0030.00914.91
7.3.20.0060.00616.68
7.3.10.0070.00716.48
7.3.00.0060.00716.49
7.2.260.0100.01014.96
7.2.250.0000.01915.11
7.2.240.0030.01215.16
7.2.230.0090.00615.24
7.2.220.0030.00915.19
7.2.210.0070.00715.30
7.2.200.0030.01315.04
7.2.190.0070.01115.24
7.2.180.0040.00814.86
7.2.170.0100.00315.00
7.2.160.0090.00615.05
7.2.150.0090.00616.73
7.2.140.0060.00916.67
7.2.130.0060.00916.77
7.2.120.0080.00616.87
7.2.110.0020.01116.84
7.2.100.0080.00316.97
7.2.90.0100.00316.77
7.2.80.0090.00316.83
7.2.70.0050.00916.90
7.2.60.0030.01016.78
7.2.50.0090.00316.90
7.2.40.0060.00816.98
7.2.30.0040.00917.05
7.2.20.0070.00516.83
7.2.10.0090.00116.96
7.2.00.0050.01317.55
7.1.330.0060.00915.73
7.1.320.0060.00615.79
7.1.310.0100.00715.58
7.1.300.0040.00815.86
7.1.290.0000.01415.88
7.1.280.0000.00915.79
7.1.270.0060.00915.80
7.1.260.0040.00415.83
7.1.250.0040.00815.81
7.1.240.0030.00915.74
7.1.230.0060.00815.77
7.1.220.0070.00315.85
7.1.210.0030.01015.49
7.1.200.0060.00315.74
7.1.190.0010.00915.64
7.1.180.0030.00915.60
7.1.170.0070.00715.79
7.1.160.0080.00315.77
7.1.150.0050.01015.68
7.1.140.0030.00915.74
7.1.130.0070.00715.67
7.1.120.0030.01015.85
7.1.110.0030.00815.71
7.1.100.0070.00516.44
7.1.90.0040.00915.80
7.1.80.0060.00915.76
7.1.70.0060.00715.99
7.1.60.0040.01416.99
7.1.50.0050.00716.21
7.1.40.0080.00615.80
7.1.30.0040.01315.73
7.1.20.0020.01015.72
7.1.10.0090.00215.77
7.1.00.0050.02817.80
7.0.330.0060.00615.26
7.0.320.0080.00615.39
7.0.310.0060.00515.14
7.0.300.0080.00715.32
7.0.290.0070.00315.23
7.0.280.0020.01115.31
7.0.270.0060.00715.13
7.0.260.0080.00515.27
7.0.250.0040.00615.37
7.0.240.0060.00515.37
7.0.230.0110.00615.36
7.0.220.0030.01015.42
7.0.210.0070.00415.34
7.0.200.0050.00615.87
7.0.190.0070.00615.44
7.0.180.0060.00715.45
7.0.170.0050.00915.43
7.0.160.0060.00715.53
7.0.150.0030.00815.45
7.0.140.0050.02717.57
7.0.130.0070.00515.40
7.0.120.0070.00515.30
7.0.110.0020.00915.37
7.0.100.0060.02916.90
7.0.90.0060.03116.94
7.0.80.0050.03216.94
7.0.70.0070.02716.91
7.0.60.0040.03417.05
7.0.50.0050.03417.12
7.0.40.0080.03015.70
7.0.30.0050.03115.70
7.0.20.0070.03215.68
7.0.10.0080.01815.60
7.0.00.0050.03115.68
5.6.400.0040.00814.64
5.6.390.0030.01014.35
5.6.380.0060.00614.36
5.6.370.0050.00814.57
5.6.360.0080.00614.59
5.6.350.0050.00914.49
5.6.340.0070.00514.37
5.6.330.0030.01114.60
5.6.320.0050.00714.31
5.6.310.0080.00514.50
5.6.300.0030.00814.57
5.6.290.0040.00714.59
5.6.280.0070.02816.55
5.6.270.0040.00614.51
5.6.260.0060.00914.34
5.6.250.0090.03016.60
5.6.240.0110.02216.38
5.6.230.0060.02616.56
5.6.220.0080.02916.50
5.6.210.0080.03016.45
5.6.200.0060.03016.64
5.6.190.0100.02816.67
5.6.180.0080.02916.63
5.6.170.0050.02616.60
5.6.160.0070.03316.78
5.6.150.0060.02716.54
5.6.140.0110.02816.58
5.6.130.0100.02716.62
5.6.120.0060.03316.57
5.6.110.0050.03216.71
5.6.100.0070.02116.62
5.6.90.0050.03416.54
5.6.80.0090.02816.24
5.6.70.0050.03116.26
5.6.60.0070.03016.27
5.6.50.0060.02816.28
5.6.40.0050.03016.34
5.6.30.0050.03216.25
5.6.20.0100.02416.38
5.6.10.0090.02816.34
5.6.00.0020.02516.32
5.5.380.0060.03015.36
5.5.370.0090.03015.43
5.5.360.0060.03215.47
5.5.350.0060.02315.30
5.5.340.0020.03315.34
5.5.330.0080.03015.51
5.5.320.0050.03015.52
5.5.310.0060.01715.48
5.5.300.0090.01515.46
5.5.290.0040.03615.65
5.5.280.0060.03215.55
5.5.270.0050.03115.54
5.5.260.0090.03015.54
5.5.250.0070.01915.34
5.5.240.0050.02715.20
5.5.230.0090.02715.23
5.5.220.0050.02915.23
5.5.210.0080.02115.26
5.5.200.0030.03115.38
5.5.190.0030.03115.28
5.5.180.0030.03415.35
5.5.170.0050.00612.86
5.5.160.0020.02215.40
5.5.150.0080.01615.38
5.5.140.0040.01915.33
5.5.130.0080.01515.26
5.5.120.0020.02015.31
5.5.110.0060.02115.26
5.5.100.0040.02015.26
5.5.90.0020.02015.19
5.5.80.0060.01815.23
5.5.70.0030.01815.22
5.5.60.0050.01315.29
5.5.50.0080.03015.35
5.5.40.0060.01615.31
5.5.30.0060.01515.23
5.5.20.0030.02915.16
5.5.10.0040.01715.27
5.5.00.0070.02115.13
5.4.450.0050.02214.00
5.4.440.0020.03514.07
5.4.430.0070.02614.04
5.4.420.0030.03114.05
5.4.410.0060.02913.97
5.4.400.0020.01913.84
5.4.390.0010.03013.87
5.4.380.0070.02013.95
5.4.370.0080.02613.91
5.4.360.0050.03213.92
5.4.350.0030.02213.84
5.4.340.0020.02713.90
5.4.330.0020.01111.32
5.4.320.0060.01513.91
5.4.310.0060.01813.92
5.4.300.0070.02013.99
5.4.290.0070.01513.96
5.4.280.0020.01713.92
5.4.270.0050.01513.94
5.4.260.0080.01013.94
5.4.250.0070.01313.85
5.4.240.0050.01613.89
5.4.230.0060.02713.90
5.4.220.0040.01613.93
5.4.210.0020.03213.85
5.4.200.0040.02513.96
5.4.190.0030.02213.82
5.4.180.0030.01713.92
5.4.170.0080.01213.83
5.4.160.0040.02813.96
5.4.150.0040.02713.92
5.4.140.0060.01413.02
5.4.130.0030.01913.04
5.4.120.0040.01513.01
5.4.110.0020.01913.03
5.4.100.0080.02213.06
5.4.90.0040.02713.02
5.4.80.0030.01613.01
5.4.70.0040.01513.03
5.4.60.0020.01713.00
5.4.50.0020.02013.06
5.4.40.0020.01913.06
5.4.30.0010.02013.02
5.4.20.0050.01213.06
5.4.10.0050.01713.05
5.4.00.0040.01712.86

preferences:
36.74 ms | 401 KiB | 5 Q