3v4l.org

run code in 300+ PHP versions simultaneously
<?php $i = 1000; $start = microtime(true); while ($i--) uniqid(""); $elapsed = microtime(true) - $start; printf("less_entropy: %.3f\n", $elapsed * 1000); $i = 1000; $start = microtime(true); while ($i--) uniqid("", true); $elapsed = microtime(true) - $start; printf("more_entropy: %.3f\n", $elapsed * 1000);

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)
7.4.10.0030.01615.04
7.4.00.0100.00814.68
7.3.130.0040.01414.81
7.3.120.0000.01714.68
7.3.110.0130.00714.88
7.3.100.0070.01014.75
7.3.90.0030.01414.26
7.3.80.0070.01014.93
7.3.70.0030.01614.87
7.3.60.0070.01114.67
7.3.50.0060.01014.64
7.3.40.0000.01214.65
7.3.30.0100.01014.76
7.3.20.0110.00716.44
7.3.10.0070.01016.57
7.3.00.0150.00316.63
7.2.260.0070.01415.16
7.2.250.0120.00314.75
7.2.240.0060.01414.84
7.2.230.0000.01615.08
7.2.220.0070.01014.89
7.2.210.0060.01015.04
7.2.200.0030.00914.92
7.2.190.0070.01114.94
7.2.180.0030.01614.97
7.2.170.0070.00715.06
7.2.160.0070.01015.02
7.2.150.0030.01316.77
7.2.140.0000.01516.66
7.2.130.0090.00916.51
7.2.120.0060.00916.55
7.2.110.0070.01016.73
7.2.100.0030.01216.87
7.2.90.0060.00616.66
7.2.80.0000.01216.38
7.2.70.0090.00316.85
7.2.60.0040.00716.83
7.2.50.0070.01016.93
7.2.40.0040.01516.81
7.2.30.0090.00616.86
7.2.20.0070.01116.71
7.2.10.0090.00616.61
7.2.00.0050.01118.16
7.1.330.0080.01215.78
7.1.320.0090.01215.73
7.1.310.0080.01415.89
7.1.300.0090.01415.39
7.1.290.0130.00615.28
7.1.280.0100.01015.79
7.1.270.0090.01415.58
7.1.260.0000.02015.65
7.1.250.0100.01415.58
7.1.240.0080.01115.63
7.1.230.0000.02115.77
7.1.220.0060.01515.47
7.1.210.0100.01415.60
7.1.200.0100.01015.75
7.1.190.0040.01615.84
7.1.180.0110.00815.58
7.1.170.0070.01115.70
7.1.160.0100.01115.60
7.1.150.0080.01315.64
7.1.140.0000.02115.54
7.1.130.0170.00415.34
7.1.120.0110.00815.64
7.1.110.0110.01115.70
7.1.100.0060.01115.80
7.1.90.0180.00315.69
7.1.80.0120.00615.42
7.1.70.0060.01116.40
7.1.60.0090.01717.44
7.1.50.0160.01016.31
7.1.40.0110.01115.72
7.1.30.0110.00515.75
7.1.20.0030.02015.48
7.1.10.0030.01515.64
7.1.00.0050.02519.08
7.0.330.0100.01015.24
7.0.320.0140.01015.50
7.0.310.0130.00815.10
7.0.300.0140.00515.35
7.0.290.0090.00915.07
7.0.280.0080.01315.23
7.0.270.0040.01315.35
7.0.260.0040.01815.04
7.0.250.0090.01414.98
7.0.240.0100.01315.40
7.0.230.0050.01915.47
7.0.220.0000.02015.35
7.0.210.0080.01615.35
7.0.200.0100.01016.09
7.0.190.0070.01615.33
7.0.180.0120.00815.29
7.0.170.0120.00815.24
7.0.160.0050.01515.29
7.0.150.0070.01415.27
7.0.140.0080.04418.83
7.0.130.0080.01315.27
7.0.120.0030.02115.26
7.0.110.0130.00815.13
7.0.100.0080.01514.94
7.0.90.0080.01115.20
7.0.80.0130.00815.41
7.0.70.0040.01715.15
7.0.60.0210.04217.37
7.0.50.0040.03116.59
7.0.40.0110.04816.74
7.0.30.0210.02516.61
7.0.20.0170.03016.72
7.0.10.0070.05316.63
7.0.00.0080.04816.83
5.6.400.0120.01314.35
5.6.390.0040.01814.29
5.6.380.0120.00813.90
5.6.370.0100.01614.25
5.6.360.0060.01614.10
5.6.350.0110.01114.09
5.6.340.0070.01414.27
5.6.330.0070.01414.13
5.6.320.0090.01413.89
5.6.310.0170.00614.52
5.6.300.0070.01514.13
5.6.290.0080.01214.21
5.6.280.0080.04617.74
5.6.270.0140.01014.17
5.6.260.0110.01314.53
5.6.250.0050.01514.16
5.6.240.0110.01113.86
5.6.230.0150.00814.09
5.6.220.0070.01813.87
5.6.210.0100.04017.28
5.6.200.0200.03916.23
5.6.190.0090.03217.29
5.6.180.0180.03817.39
5.6.170.0230.04817.41
5.6.160.0170.04217.31
5.6.150.0070.02916.14
5.6.140.0070.02716.26
5.6.130.0040.03816.14
5.6.120.0100.04917.45
5.6.110.0120.04817.65
5.6.100.0090.03417.48
5.6.90.0080.04817.49
5.6.80.0090.04617.20
5.6.70.0130.01013.68
5.6.60.0030.01513.87
5.6.50.0140.00713.79
5.6.40.0160.00714.03
5.6.30.0030.01714.14
5.6.20.0050.01914.13
5.6.10.0070.01813.95
5.6.00.0070.01414.20
5.5.380.0040.01613.93
5.5.370.0140.00813.95
5.5.360.0110.01513.91
5.5.350.0050.04917.13
5.5.340.0050.03615.90
5.5.330.0060.03317.09
5.5.320.0250.03717.12
5.5.310.0280.04017.05
5.5.300.0110.04415.77
5.5.290.0090.04615.98
5.5.280.0080.04917.39
5.5.270.0100.03617.36
5.5.260.0110.03317.46
5.5.250.0090.03217.27
5.5.240.0170.03717.35
5.5.230.0120.01314.00
5.5.220.0070.01013.93
5.5.210.0110.01014.44
5.5.200.0080.01613.88
5.5.190.0100.01013.70
5.5.180.0100.01314.22
5.5.170.0070.01413.71
5.5.160.0170.00413.95
5.5.150.0100.01014.00
5.5.140.0030.02013.98
5.5.130.0070.01514.09
5.5.120.0060.01514.15
5.5.110.0060.01513.75
5.5.100.0130.00813.94
5.5.90.0140.01113.76
5.5.80.0080.01213.80
5.5.70.0050.02014.17
5.5.60.0120.00813.92
5.5.50.0100.01314.07
5.5.40.0130.01313.98
5.5.30.0150.01113.75
5.5.20.0060.01513.91
5.5.10.0130.01313.97
5.5.00.0080.01413.86
5.4.450.0240.04014.87
5.4.440.0200.04515.05
5.4.430.0210.02315.11
5.4.420.0210.04215.08
5.4.410.0210.04014.99
5.4.400.0210.03414.97
5.4.390.0210.03615.00
5.4.380.0210.04114.79
5.4.370.0250.03914.85
5.4.360.0250.03015.05
5.4.350.0180.02214.79
5.4.340.0190.02114.96
5.4.330.0030.01610.95
5.4.320.0170.02214.83
5.4.310.0200.03914.79
5.4.300.0160.02314.92
5.4.290.0120.02914.88
5.4.280.0140.02714.84
5.4.270.0120.02814.85
5.4.260.0050.03115.03
5.4.250.0130.02614.87
5.4.240.0130.02414.84
5.4.230.0130.02414.78
5.4.220.0170.03014.81
5.4.210.0220.04214.87
5.4.200.0210.03514.90
5.4.190.0220.04414.91
5.4.180.0180.03714.70
5.4.170.0180.03814.83
5.4.160.0220.03714.86
5.4.150.0190.04214.69
5.4.140.0180.04813.45
5.4.130.0180.04413.48
5.4.120.0210.04113.59
5.4.110.0140.05113.67
5.4.100.0240.03613.78
5.4.90.0210.03813.62
5.4.80.0200.04213.47
5.4.70.0280.03213.68
5.4.60.0210.03313.68
5.4.50.0180.03613.45
5.4.40.0200.04113.33
5.4.30.0200.04013.51
5.4.20.0210.04313.52
5.4.10.0220.04113.54
5.4.00.0240.03413.38
5.3.290.0150.02912.60
5.3.280.0190.03412.33
5.3.270.0180.04612.53
5.3.260.0220.03912.43
5.3.250.0180.04112.48
5.3.240.0210.03712.43
5.3.230.0210.03812.42
5.3.220.0180.04612.31
5.3.210.0220.03512.25
5.3.200.0160.04412.46
5.3.190.0200.04412.46
5.3.180.0160.03612.42
5.3.170.0170.04612.48
5.3.160.0160.04412.52
5.3.150.0250.03912.54
5.3.140.0160.04612.52
5.3.130.0230.03812.46
5.3.120.0150.02912.46
5.3.110.0230.04012.42
5.3.100.0170.04512.10
5.3.90.0230.04012.15
5.3.80.0150.04212.00
5.3.70.0160.04812.15
5.3.60.0190.04212.06
5.3.50.0180.04212.06
5.3.40.0190.03912.12
5.3.30.0180.04312.16
5.3.20.0180.04111.84
5.3.10.0200.02111.91
5.3.00.0210.04211.86
5.2.170.0170.03312.08
5.2.160.0170.04712.08
5.2.150.0200.04012.08
5.2.140.0230.05312.08
5.2.130.0500.04312.08
5.2.120.0330.05312.08
5.2.110.0200.05312.09
5.2.100.0300.04712.09
5.2.90.0300.04012.09
5.2.80.0300.05712.09
5.2.70.0230.03012.09
5.2.60.0400.05712.09
5.2.50.0270.06312.09
5.2.40.0300.05712.09
5.2.30.0270.05012.09
5.2.20.0170.05312.09
5.2.10.0270.05312.09
5.2.00.0300.05312.09
5.1.60.0270.05012.09
5.1.50.0100.06712.09
5.1.40.0200.05712.09
5.1.30.0100.05012.09
5.1.20.0200.04712.09
5.1.10.0170.03012.09
5.1.00.0230.05312.09
5.0.50.0200.04012.09
5.0.40.0170.04312.09
5.0.30.0200.06012.09
5.0.20.0070.05312.09
5.0.10.0130.04712.09
5.0.00.0070.07312.09
4.4.90.0100.04312.09
4.4.80.0230.02712.09
4.4.70.0130.04012.09
4.4.60.0170.03712.09
4.4.50.0170.02312.09
4.4.40.0170.05312.09
4.4.30.0100.04312.09
4.4.20.0100.02712.09
4.4.10.0170.04012.09
4.4.00.0100.05712.09
4.3.110.0130.04012.09
4.3.100.0170.03312.09
4.3.90.0100.02012.09
4.3.80.0200.04712.09
4.3.70.0100.02712.09
4.3.60.0130.03712.09
4.3.50.0100.04312.09
4.3.40.0100.03712.09
4.3.30.0070.04012.09
4.3.20.0070.02312.09
4.3.10.0070.04012.09
4.3.00.0030.04012.09

preferences:
37.87 ms | 401 KiB | 5 Q