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); $generated_id = strtoupper($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)
7.4.00.0140.00414.95
7.3.120.0060.01314.75
7.3.110.0030.01314.80
7.3.100.0100.00714.60
7.3.90.0090.00014.82
7.3.80.0030.01014.71
7.3.70.0000.01514.96
7.3.60.0000.01214.91
7.3.50.0000.00914.84
7.3.40.0120.00614.93
7.3.30.0140.00314.81
7.3.20.0070.01116.50
7.3.10.0060.00816.49
7.3.00.0100.00716.70
7.2.250.0040.01615.18
7.2.240.0060.01315.13
7.2.230.0030.01415.12
7.2.220.0060.00315.02
7.2.210.0000.01014.57
7.2.200.0030.01315.18
7.2.190.0100.00714.97
7.2.180.0030.00614.98
7.2.170.0150.00314.89
7.2.00.0100.01019.02
7.1.330.0100.00715.82
7.1.320.0080.00815.61
7.1.310.0090.00315.64
7.1.300.0090.00415.78
7.1.290.0100.01015.53
7.1.280.0060.00915.81
7.1.270.0060.00915.83
7.1.260.0000.01115.61
7.1.70.0000.00817.20
7.1.60.2540.00715.45
7.1.50.0030.01716.72
7.1.00.0030.03322.46
7.0.200.0040.01116.59
7.0.140.0030.07321.92
7.0.100.0170.08320.00
7.0.90.0070.08319.90
7.0.80.0100.04319.97
7.0.70.0100.07719.84
7.0.60.0100.05019.92
7.0.50.0100.07320.15
7.0.40.0070.08020.14
7.0.30.0070.09020.08
7.0.20.0200.06720.17
7.0.10.0030.06320.04
7.0.00.0100.05020.14
5.6.280.0030.07320.88
5.6.250.0030.08720.62
5.6.240.0100.07020.63
5.6.230.0100.07320.68
5.6.220.0100.06020.67
5.6.210.0000.08020.68
5.6.200.0000.08721.12
5.6.190.0100.06720.95
5.6.180.0070.06021.03
5.6.170.0070.05020.96
5.6.160.0000.08721.16
5.6.150.0130.08020.95
5.6.140.0030.08721.01
5.6.130.0100.07321.13
5.6.120.0130.05021.04
5.6.110.0100.08321.06
5.6.100.0030.05721.09
5.6.90.0030.09321.07
5.6.80.0070.08320.39
5.6.70.0100.07320.38
5.6.60.0100.07720.51
5.6.50.0100.07720.33
5.6.40.0000.08320.31
5.6.30.0030.09020.37
5.6.20.0030.08720.38
5.6.10.0000.04720.23
5.6.00.0000.04320.42
5.5.380.0270.06320.44
5.5.370.0070.08020.44
5.5.360.0070.08020.40
5.5.350.0170.07720.42
5.5.340.0070.06320.77
5.5.330.0230.06720.64
5.5.320.0070.04720.92
5.5.310.0070.08720.79
5.5.300.0000.08720.83
5.5.290.0100.06320.63
5.5.280.0070.06020.91
5.5.270.0100.08320.89
5.5.260.0170.05720.62
5.5.250.0030.08320.71
5.5.240.0130.06020.30
5.5.230.0200.05020.28
5.5.220.0170.07020.01
5.5.210.0100.07720.13
5.5.200.0130.07020.18
5.5.190.0100.07320.26
5.5.180.0100.04720.21
5.5.160.0070.04020.12
5.5.150.0100.05020.24
5.5.140.0100.03720.11
5.5.130.0070.03720.27
5.5.120.0130.03020.17
5.5.110.0170.03020.10
5.5.100.0100.03320.13
5.5.90.0100.03020.05
5.5.80.0030.03720.05
5.5.70.0130.03019.99
5.5.60.0100.04720.14
5.5.50.0130.02720.11
5.5.40.0000.04020.06
5.5.30.0030.04319.92
5.5.20.0030.04020.14
5.5.10.0000.05720.10
5.5.00.0000.06020.12
5.4.450.0100.07319.36
5.4.440.0100.07719.38
5.4.430.0130.07019.36
5.4.420.0100.06019.45
5.4.410.0070.08019.27
5.4.400.0100.04719.20
5.4.390.0100.06319.03
5.4.380.0100.04019.06
5.4.370.0070.07718.94
5.4.360.0100.06318.81
5.4.350.0030.04319.25
5.4.340.0030.08018.78
5.4.320.0000.05019.25
5.4.310.0070.05019.12
5.4.300.0030.03719.23
5.4.290.0070.03318.89
5.4.280.0070.03319.09
5.4.270.0100.07319.04
5.4.260.0070.03319.05
5.4.250.0070.04018.80
5.4.240.0030.03719.22
5.4.230.0000.04318.94
5.4.220.0030.03718.94
5.4.210.0030.03719.12
5.4.200.0070.03719.12
5.4.190.0070.03719.06
5.4.180.0070.03318.93
5.4.170.0070.03719.13
5.4.160.0030.04019.07
5.4.150.0070.03319.06
5.4.140.0030.03316.34
5.4.130.0030.06716.05
5.4.120.0070.03316.27
5.4.110.0070.03316.36
5.4.100.0030.03316.30
5.4.90.0170.06016.21
5.4.80.0100.02716.36
5.4.70.0030.03716.41
5.4.60.0000.04016.30
5.4.50.0030.06016.19
5.4.40.0000.05316.26
5.4.30.0070.03016.40
5.4.20.0000.03716.32
5.4.10.0030.06316.27
5.4.00.0100.06315.78
5.3.290.0030.04014.66
5.3.280.0000.04014.59
5.3.270.0070.06014.59
5.3.260.0030.03714.44
5.3.250.0030.03714.56
5.3.240.0070.03314.42
5.3.230.0000.04314.59
5.3.220.0000.04014.42
5.3.210.0130.02714.53
5.3.200.0070.03314.43
5.3.190.0100.03014.57
5.3.180.0100.02714.55
5.3.170.0030.03314.47
5.3.160.0070.03314.51
5.3.150.0100.07314.55
5.3.140.0000.05014.54
5.3.130.0100.07714.54
5.3.120.0070.06714.48
5.3.110.0070.06714.41
5.3.100.0070.07713.87
5.3.90.0130.06713.93
5.3.80.0030.08013.96
5.3.70.0130.06714.00
5.3.60.0070.04313.91
5.3.50.0030.07013.93
5.3.40.0070.05313.73
5.3.30.0030.04313.89
5.3.20.0000.07713.63
5.3.10.0130.03313.63
5.3.00.0130.06313.47
5.2.170.0070.03011.19
5.2.160.0000.04711.06
5.2.150.0030.06311.12
5.2.140.0070.03310.93
5.2.130.0030.06311.13
5.2.120.0200.04310.94
5.2.110.0100.05710.98
5.2.100.0130.05711.04
5.2.90.0070.03311.09
5.2.80.0070.06010.96
5.2.70.0070.05711.04
5.2.60.0070.04710.88
5.2.50.0070.04711.04
5.2.40.0000.06310.78
5.2.30.0030.07010.93
5.2.20.0030.03310.75
5.2.10.0070.05310.84
5.2.00.0070.05010.77
5.1.60.0070.05010.07
5.1.50.0170.02010.10
5.1.40.0100.05010.00
5.1.30.0030.02710.24
5.1.20.0030.04710.40
5.1.10.0000.04310.05
5.1.00.0000.04010.14
5.0.50.0000.0479.16
5.0.40.0000.0439.16
5.0.30.0000.0679.16
5.0.20.0030.0339.16
5.0.10.0070.0209.16
5.0.00.0030.0339.16
4.4.90.0030.0139.16
4.4.80.0030.0309.16
4.4.70.0000.0379.16
4.4.60.0030.0339.16
4.4.50.0000.0209.16
4.4.40.0000.0479.16
4.4.30.0070.0309.16
4.4.20.0000.0279.16
4.4.10.0000.0209.16
4.4.00.0100.0479.16
4.3.110.0030.0309.16
4.3.100.0000.0379.16
4.3.90.0030.0279.16
4.3.80.0000.0309.16
4.3.70.0070.0139.16
4.3.60.0070.0309.16
4.3.50.0000.0279.16
4.3.40.0030.0439.16
4.3.30.0000.0309.16
4.3.20.0100.0179.16
4.3.10.0070.0239.16
4.3.00.0000.0279.16

preferences:
33.48 ms | 400 KiB | 5 Q