3v4l.org

run code in 300+ PHP versions simultaneously
<?php $generated_id = substr('abcdefghijklmnopqrstuvwxyz', mt_rand(0,25), 1) . mt_rand(0,9) . substr(hash("sha256", time() . mt_rand(100000,999999)),0,6); strtoupper($generated_id); echo $generated_id;

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)
7.4.10.0100.00715.05
7.4.00.0090.00814.96
7.3.130.0130.00315.02
7.3.120.0080.00914.61
7.3.110.0070.01214.80
7.3.100.0050.01114.66
7.3.90.0060.01014.84
7.3.80.0070.00615.01
7.3.70.0060.00714.77
7.3.60.0090.00514.77
7.3.50.0050.00614.99
7.3.40.0030.01014.79
7.3.30.0060.00814.70
7.3.20.0070.00616.46
7.3.10.0080.00816.54
7.3.00.0110.00216.57
7.2.260.0110.00815.02
7.2.250.0030.01215.07
7.2.240.0070.00714.95
7.2.230.0070.00714.78
7.2.220.0050.01015.12
7.2.210.0030.00915.08
7.2.200.0090.00614.86
7.2.190.0020.01014.86
7.2.180.0080.00514.87
7.2.170.0060.00514.76
7.2.160.0020.01114.81
7.2.150.0050.00916.65
7.2.140.0040.00816.53
7.2.130.0030.01016.92
7.2.120.0110.00516.66
7.2.110.0090.00616.81
7.2.100.0050.01016.95
7.2.90.0080.00716.91
7.2.80.0070.00816.81
7.2.70.0020.01116.75
7.2.60.0050.00816.66
7.2.50.0080.00316.81
7.2.40.0140.00316.85
7.2.30.0020.01116.96
7.2.20.0090.00516.79
7.2.10.0070.00716.82
7.2.00.0060.00617.61
7.1.330.0070.00715.71
7.1.320.0020.01515.88
7.1.310.0060.00515.86
7.1.300.0050.00615.66
7.1.290.0080.00615.67
7.1.280.0040.00915.62
7.1.270.0050.00815.69
7.1.260.0020.01115.83
7.1.250.0080.00615.67
7.1.240.0070.00715.67
7.1.230.0050.00515.79
7.1.220.0040.00615.84
7.1.210.0050.00915.68
7.1.200.0060.00815.65
7.1.190.0050.01015.86
7.1.180.0060.00615.59
7.1.170.0070.00815.80
7.1.160.0040.00415.64
7.1.150.0080.00415.63
7.1.140.0080.00215.77
7.1.130.0070.00815.85
7.1.120.0100.00715.92
7.1.110.0040.01115.87
7.1.100.0070.00515.81
7.1.90.0060.00515.81
7.1.80.0070.00515.66
7.1.70.0060.00716.13
7.1.60.0080.01016.96
7.1.50.0060.00916.17
7.1.40.0050.00915.64
7.1.30.0030.00915.83
7.1.20.0040.00815.51
7.1.10.0080.00615.80
7.1.00.0080.02418.02
7.0.330.0060.00515.32
7.0.320.0050.00615.34
7.0.310.0060.00715.48
7.0.300.0050.00515.29
7.0.290.0090.00515.33
7.0.280.0090.00215.34
7.0.270.0070.00915.38
7.0.260.0070.00715.41
7.0.250.0060.00615.33
7.0.240.0060.00815.41
7.0.230.0050.00815.46
7.0.220.0050.00515.39
7.0.210.0110.00315.38
7.0.200.0030.00915.71
7.0.190.0080.00815.33
7.0.180.0050.00615.36
7.0.170.0020.00815.21
7.0.160.0030.01115.29
7.0.150.0030.00915.40
7.0.140.0080.02617.52
7.0.130.0040.00815.11
7.0.120.0100.00615.36
7.0.110.0050.01015.46
7.0.100.0090.03716.79
7.0.90.0070.03316.99
7.0.80.0080.02917.02
7.0.70.0030.02616.84
7.0.60.0080.02316.96
7.0.50.0060.01817.20
7.0.40.0050.01615.70
7.0.30.0040.01815.66
7.0.20.0020.02315.67
7.0.10.0100.02615.49
7.0.00.0060.01915.63
5.6.400.0100.00514.41
5.6.390.0090.00314.33
5.6.380.0060.00914.19
5.6.370.0080.00614.52
5.6.360.0040.01214.52
5.6.350.0080.00714.07
5.6.340.0090.00314.21
5.6.330.0040.00614.26
5.6.320.0090.00314.19
5.6.310.0030.01114.27
5.6.300.0070.01014.27
5.6.290.0050.00914.13
5.6.280.0110.00614.30
5.6.270.0080.00614.51
5.6.260.0050.00714.03
5.6.250.0040.02916.43
5.6.240.0050.02516.26
5.6.230.0110.02616.27
5.6.220.0050.02016.40
5.6.210.0050.03316.54
5.6.200.0020.02316.63
5.6.190.0040.02116.48
5.6.180.0030.02316.58
5.6.170.0070.03216.46
5.6.160.0010.02516.60
5.6.150.0060.02616.48
5.6.140.0050.01816.52
5.6.130.0070.01916.56
5.6.120.0070.02416.57
5.6.110.0030.02016.57
5.6.100.0070.01916.51
5.6.90.0030.02316.59
5.6.80.0050.01616.29
5.6.70.0030.01816.28
5.6.60.0020.02216.33
5.6.50.0010.02116.24
5.6.40.0060.02216.22
5.6.30.0040.02116.23
5.6.20.0090.03116.24
5.6.10.0080.02916.22
5.6.00.0060.03416.20
5.5.380.0080.02716.21
5.5.370.0060.03016.35
5.5.360.0100.02716.20
5.5.350.0050.02116.06
5.5.340.0050.01816.28
5.5.330.0050.01616.57
5.5.320.0050.01716.42
5.5.310.0020.01816.33
5.5.300.0050.01616.36
5.5.290.0040.01716.46
5.5.280.0040.02916.47
5.5.270.0050.02116.48
5.5.260.0070.02016.45
5.5.250.0070.01716.44
5.5.240.0040.01716.22
5.5.230.0050.02016.20
5.5.220.0040.01616.12
5.5.210.0040.01916.12
5.5.200.0070.01816.30
5.5.190.0050.02916.20
5.5.180.0080.02916.12
5.5.170.0080.00614.02
5.5.160.0070.03216.22
5.5.150.0050.03416.03
5.5.140.0130.02416.21
5.5.130.0030.03216.00
5.5.120.0070.02716.11
5.5.110.0050.03016.17
5.5.100.0060.02916.05
5.5.90.0080.03116.17
5.5.80.0030.02315.98
5.5.70.0070.02916.09
5.5.60.0050.02215.99
5.5.50.0050.02916.13
5.5.40.0090.02616.12
5.5.30.0090.02916.22
5.5.20.0080.03016.08
5.5.10.0040.03316.00
5.5.00.0070.02416.06
5.4.450.0050.02414.41
5.4.440.0030.02014.53
5.4.430.0020.01914.50
5.4.420.0060.01514.52
5.4.410.0090.02514.46
5.4.400.0020.01914.41
5.4.390.0050.01614.40
5.4.380.0050.01614.34
5.4.370.0050.01514.41
5.4.360.0020.01914.36
5.4.350.0070.01914.36
5.4.340.0040.02914.31
5.4.330.0030.00812.06
5.4.320.0070.02214.38
5.4.310.0060.03214.39
5.4.300.0060.02614.41
5.4.290.0060.02914.40
5.4.280.0060.02614.38
5.4.270.0050.02314.39
5.4.260.0050.01814.30
5.4.250.0040.02914.38
5.4.240.0080.02614.39
5.4.230.0010.02614.31
5.4.220.0060.02614.30
5.4.210.0060.02114.39
5.4.200.0030.03014.39
5.4.190.0070.02414.45
5.4.180.0030.02614.41
5.4.170.0080.02614.45
5.4.160.0030.03014.38
5.4.150.0070.02914.38
5.4.140.0070.02613.48
5.4.130.0030.03113.38
5.4.120.0080.02613.38
5.4.110.0090.02413.44
5.4.100.0050.02913.51
5.4.90.0050.03113.50
5.4.80.0030.03013.49
5.4.70.0040.02613.50
5.4.60.0020.02813.49
5.4.50.0030.03113.48
5.4.40.0070.02613.48
5.4.30.0080.01913.43
5.4.20.0030.02813.45
5.4.10.0080.02413.47
5.4.00.0040.02713.27
5.3.290.0050.02412.93
5.3.280.0020.03112.85
5.3.270.0040.02212.86
5.3.260.0070.02712.90
5.3.250.0030.02312.90
5.3.240.0060.02812.86
5.3.230.0080.02812.91
5.3.220.0050.03012.89
5.3.210.0070.02812.85
5.3.200.0040.03012.85
5.3.190.0040.03012.89
5.3.180.0040.02512.89
5.3.170.0060.01712.83
5.3.160.0030.03112.89
5.3.150.0070.02812.90
5.3.140.0060.02412.89
5.3.130.0040.02612.88
5.3.120.0050.02312.89
5.3.110.0060.03012.89
5.3.100.0070.02012.72
5.3.90.0060.02812.71
5.3.80.0080.02712.65
5.3.70.0030.02412.69
5.3.60.0040.03112.70
5.3.50.0070.02512.67
5.3.40.0060.02412.61
5.3.30.0060.02912.65
5.3.20.0060.02112.61
5.3.10.0050.02212.56
5.3.00.0060.02212.58
5.2.170.0030.06011.02
5.2.160.0100.06011.14
5.2.150.0100.05711.20
5.2.140.0000.06711.13
5.2.130.0070.04711.14
5.2.120.0130.06311.09
5.2.110.0030.03311.08
5.2.100.0070.03711.09
5.2.90.0100.05711.15
5.2.80.0130.02311.05
5.2.70.0100.05310.93
5.2.60.0000.04310.91
5.2.50.0070.04710.88
5.2.40.0070.05310.84
5.2.30.0070.03010.82
5.2.20.0000.04010.82
5.2.10.0070.05710.91
5.2.00.0130.04310.77
5.1.60.0000.0509.98
5.1.50.0030.05310.10
5.1.40.0100.0509.81
5.1.30.0100.05310.39
5.1.20.0030.05310.25
5.1.10.0030.04710.16
5.1.00.0030.05710.13
5.0.50.0030.0308.63
5.0.40.0030.0338.39
5.0.30.0070.0608.06
5.0.20.0070.0238.19
5.0.10.0000.0408.15
5.0.00.0000.0478.18
4.4.90.0000.0306.87
4.4.80.0070.0306.87
4.4.70.0070.0176.87
4.4.60.0000.0236.87
4.4.50.0170.0206.87
4.4.40.0030.0536.87
4.4.30.0000.0376.87
4.4.20.0000.0276.87
4.4.10.0030.0306.87
4.4.00.0030.0306.87
4.3.110.0030.0276.87
4.3.100.0030.0336.87
4.3.90.0030.0136.87
4.3.80.0000.0436.87
4.3.70.0000.0206.87
4.3.60.0000.0236.87
4.3.50.0000.0306.87
4.3.40.0000.0506.87
4.3.30.0000.0206.87
4.3.20.0030.0336.87
4.3.10.0070.0336.87
4.3.00.0000.0276.87

preferences:
30.8 ms | 401 KiB | 5 Q