3v4l.org

run code in 300+ PHP versions simultaneously
<?php function uuid($c = 4) { $x = function($c) { for ($n = ''; strlen($n) < $c + 1; $n = $n.base_convert(mt_rand(), 10, 16)); return substr($n, 0, $c); }; return sprintf( '%x-%s-%s-%s-%s%s%s', microtime(true) * 10000, $x($c), $x($c), $x($c), $x($c), $x($c), $x($c) ); } $time = microtime(); $uuids = array(); for ($i = 0; $i < 100; $i++) { $uuids[] = uuid(); } if (count(array_unique($uuids)) != count($uuids)) { echo 'DUPLICATED'; } else { echo 'No duplicate'; print_r($uuids); }

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This script was stopped while abusing our resources

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)
7.4.10.0090.00915.20
7.4.00.0100.00714.77
7.3.130.0070.01014.76
7.3.120.0100.00714.90
7.3.110.0130.00714.70
7.3.100.0070.00714.97
7.3.90.0040.00814.85
7.3.80.0060.00915.07
7.3.70.0040.01114.91
7.3.60.0060.00714.68
7.3.50.0030.00614.57
7.3.40.0070.00714.98
7.3.30.0040.01114.82
7.3.20.0060.00916.84
7.3.10.0140.00316.67
7.3.00.0070.01016.72
7.2.260.0070.01115.13
7.2.250.0070.01114.81
7.2.240.0090.00615.11
7.2.230.0060.00614.79
7.2.220.0040.01414.87
7.2.210.0090.00615.42
7.2.200.0040.01115.19
7.2.190.0040.01415.15
7.2.180.0000.01414.90
7.2.170.0030.01015.18
7.2.160.0090.00614.91
7.2.150.0040.00716.95
7.2.140.0030.01316.79
7.2.130.0070.00716.77
7.2.120.0070.00717.02
7.2.110.0040.00916.84
7.2.100.0070.01117.05
7.2.90.0060.00916.98
7.2.80.0090.00317.08
7.2.70.0030.01317.09
7.2.60.0000.01017.07
7.2.50.0030.01017.06
7.2.40.0000.01716.73
7.2.30.0070.01017.02
7.2.20.0030.01316.73
7.2.10.0100.00717.05
7.2.00.0020.01218.12
7.1.330.0100.00715.91
7.1.320.0040.00815.93
7.1.310.0070.00715.76
7.1.300.0030.00915.96
7.1.290.0060.00315.74
7.1.280.0040.00815.79
7.1.270.0040.01215.90
7.1.260.0000.01415.96
7.1.250.0090.00615.79
7.1.240.0070.01015.54
7.1.230.0070.00715.94
7.1.220.0080.00815.76
7.1.210.0070.00715.76
7.1.200.0060.00615.80
7.1.190.0030.01015.64
7.1.180.0070.00315.91
7.1.170.0070.00715.95
7.1.160.0030.01215.64
7.1.150.0030.01415.73
7.1.140.0070.00716.04
7.1.130.0070.00715.79
7.1.120.0070.01015.61
7.1.110.0060.00915.49
7.1.100.0090.00615.86
7.1.90.0060.01015.95
7.1.80.0100.00715.58
7.1.70.0040.00816.55
7.1.60.0070.01117.65
7.1.50.0100.01116.48
7.1.40.0080.00315.79
7.1.30.0060.00615.60
7.1.20.0030.00915.66
7.1.10.0090.00615.87
7.1.00.0030.04319.08
7.0.330.0100.00715.29
7.0.320.0090.00915.07
7.0.310.0140.00015.47
7.0.300.0060.01015.53
7.0.290.0040.01115.45
7.0.280.0030.01415.46
7.0.270.0090.00915.41
7.0.260.0070.01015.47
7.0.250.0030.01215.56
7.0.240.0070.01015.27
7.0.230.0060.01015.34
7.0.220.0060.00615.29
7.0.210.0040.01515.54
7.0.200.0010.01116.13
7.0.190.0040.01515.16
7.0.180.0090.00615.59
7.0.170.0030.01215.55
7.0.160.0000.01315.58
7.0.150.0060.01215.11
7.0.140.0050.04018.86
7.0.130.0100.00715.45
7.0.120.0040.01115.37
7.0.110.0030.00915.32
7.0.100.0120.00015.61
7.0.90.0030.01215.64
7.0.80.0040.00715.38
7.0.70.0000.01515.51
7.0.60.0030.02817.82
7.0.50.0110.04016.77
7.0.40.0080.05216.69
7.0.30.0200.04416.90
7.0.20.0170.03116.80
7.0.10.0080.04316.93
7.0.00.0080.03316.86
5.6.400.0030.01414.43
5.6.390.0040.01114.26
5.6.380.0090.00914.10
5.6.370.0060.01014.25
5.6.360.0150.00014.56
5.6.350.0080.00814.27
5.6.340.0030.01414.71
5.6.330.0030.01314.54
5.6.320.0120.00614.51
5.6.310.0030.01614.47
5.6.300.0070.01414.47
5.6.290.0040.01214.11
5.6.280.0030.04617.72
5.6.270.0080.00814.45
5.6.260.0000.01114.22
5.6.250.0030.01414.20
5.6.240.0110.00714.54
5.6.230.0030.01414.62
5.6.220.0060.01014.46
5.6.210.0090.02017.58
5.6.200.0080.02316.35
5.6.190.0120.04317.45
5.6.180.0200.04417.54
5.6.170.0140.02717.48
5.6.160.0050.03317.39
5.6.150.0100.04316.38
5.6.140.0080.02216.29
5.6.130.0020.03416.36
5.6.120.0130.02817.78
5.6.110.0110.04317.82
5.6.100.0100.04517.82
5.6.90.0130.03717.70
5.6.80.0080.04517.38
5.6.70.0030.01314.32
5.6.60.0100.00714.32
5.6.50.0000.01714.20
5.6.40.0030.01514.72
5.6.30.0130.00614.41
5.6.20.0030.01414.39
5.6.10.0130.00314.70
5.6.00.0090.00614.33
5.5.380.0070.01314.45
5.5.370.0000.01614.58
5.5.360.0030.01714.41
5.5.350.0200.04017.46
5.5.340.0030.04416.24
5.5.330.0090.04617.40
5.5.320.0160.03017.45
5.5.310.0170.03917.16
5.5.300.0020.05016.36
5.5.290.0070.03016.31
5.5.280.0100.04317.63
5.5.270.0110.02517.46
5.5.260.0070.05217.84
5.5.250.0020.03217.43
5.5.240.0100.03817.40
5.5.230.0100.01014.45
5.5.220.0130.00314.42
5.5.210.0060.01214.38
5.5.200.0120.00414.53
5.5.190.0090.00314.52
5.5.180.0070.01014.16
5.5.170.0130.00714.38
5.5.160.0100.00314.32
5.5.150.0030.01414.49
5.5.140.0100.00314.45
5.5.130.0000.01214.31
5.5.120.0030.01414.56
5.5.110.0000.01614.49
5.5.100.0140.00714.28
5.5.90.0070.01114.48
5.5.80.0000.01514.45
5.5.70.0100.00614.54
5.5.60.0100.00714.19
5.5.50.0070.01014.50
5.5.40.0000.01314.51
5.5.30.0030.01414.07
5.5.20.0040.01414.36
5.5.10.0060.00614.11
5.5.00.0070.00314.19
5.4.450.0190.02815.79
5.4.440.0230.02915.93
5.4.430.0130.02315.79
5.4.420.0090.01915.92
5.4.410.0090.02715.74
5.4.400.0050.02115.63
5.4.390.0120.02315.64
5.4.380.0110.03815.58
5.4.370.0270.03015.43
5.4.360.0290.03215.47
5.4.350.0300.03015.47
5.4.340.0250.03015.56
5.4.330.0000.01312.31
5.4.320.0100.02512.44
5.4.310.0070.02912.43
5.4.300.0090.01912.44
5.4.290.0040.02412.43
5.4.280.0100.02012.39
5.4.270.0100.01812.38
5.4.260.0060.02312.38
5.4.250.0060.02512.38
5.4.240.0090.02012.38
5.4.230.0040.02512.38
5.4.220.0090.02112.38
5.4.210.0040.02512.38
5.4.200.0070.02312.38
5.4.190.0080.02112.38
5.4.180.0070.02412.38
5.4.170.0070.02312.38
5.4.160.0060.02312.38
5.4.150.0080.02112.38
5.4.140.0080.02312.22
5.4.130.0060.02312.21
5.4.120.0060.02412.20
5.4.110.0040.02412.19
5.4.100.0050.02512.19
5.4.90.0050.02412.19
5.4.80.0020.02712.19
5.4.70.0090.01712.19
5.4.60.0060.02312.19
5.4.50.0100.02112.19
5.4.40.0080.02212.19
5.4.30.0060.02412.18
5.4.20.0020.02412.18
5.4.10.0050.02412.18
5.4.00.0110.01911.93
5.3.290.0090.03712.80
5.3.280.0070.03812.73
5.3.270.0050.04212.75
5.3.260.0040.05312.74
5.3.250.0130.03212.74
5.3.240.0060.04012.74
5.3.230.0100.03712.74
5.3.220.0080.03912.70
5.3.210.0080.04312.71
5.3.200.0090.03712.70
5.3.190.0070.03912.70
5.3.180.0090.03512.70
5.3.170.0100.03412.70
5.3.160.0120.03512.70
5.3.150.0120.03412.70
5.3.140.0080.03612.69
5.3.130.0100.03712.68
5.3.120.0080.03912.68
5.3.110.0090.03712.69
5.3.100.0070.03712.17
5.3.90.0060.03912.16
5.3.80.0080.03712.15
5.3.70.0080.04212.15
5.3.60.0090.03412.13
5.3.50.0100.03512.08
5.3.40.0080.03612.08
5.3.30.0070.03412.04
5.3.20.0060.03611.82
5.3.10.0100.03311.79
5.3.00.0090.03911.77
5.2.170.0040.0319.21
5.2.160.0020.0319.22
5.2.150.0060.0299.22
5.2.140.0040.0309.21
5.2.130.0060.0329.17
5.2.120.0060.0279.17
5.2.110.0040.0299.18
5.2.100.0040.0299.18
5.2.90.0050.0319.18
5.2.80.0060.0299.17
5.2.70.0090.0269.18
5.2.60.0060.0299.13
5.2.50.0050.0299.09
5.2.40.0070.0279.07
5.2.30.0040.0309.05
5.2.20.0040.0309.04
5.2.10.0070.0258.95
5.2.00.0050.0298.81
5.1.60.0060.0228.09
5.1.50.0050.0248.08
5.1.40.0030.0258.07
5.1.30.0050.0248.42
5.1.20.0020.0288.44
5.1.10.0070.0228.16
5.1.00.0020.0288.16
5.0.50.0060.0186.64
5.0.40.0030.0206.50
5.0.30.0050.0296.31
5.0.20.0020.0206.28
5.0.10.0030.0206.26
5.0.00.0040.0306.25
4.4.90.0020.0164.77
4.4.80.0040.0174.75
4.4.70.0030.0154.75
4.4.60.0010.0174.76
4.4.50.0050.0134.77
4.4.40.0020.0264.71
4.4.30.0040.0154.76
4.4.20.0030.0154.84
4.4.10.0030.0174.85
4.4.00.0010.0274.76
4.3.110.0040.0144.67
4.3.100.0040.0134.66
4.3.90.0050.0124.64
4.3.80.0010.0264.58
4.3.70.0040.0134.63
4.3.60.0000.0174.63
4.3.50.0030.0154.63
4.3.40.0030.0234.54
4.3.30.0000.0183.30
4.3.20.0010.0173.28
4.3.10.0010.0163.24
4.3.00.0000.01318.23

preferences:
39.41 ms | 401 KiB | 5 Q