3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'pkrzysztofik'; $nazwisko = substr($string, 1); echo ucfirst($imie);

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)
8.3.60.0100.01018.14
8.3.50.0130.00718.30
8.3.40.0070.00718.60
8.3.30.0140.00018.57
8.3.20.0070.00020.30
8.3.10.0050.00320.16
8.3.00.0040.00423.48
8.2.180.0040.01118.27
8.2.170.0100.00322.96
8.2.160.0070.00720.37
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0080.00020.37
8.2.120.0080.00026.35
8.2.110.0110.01122.23
8.2.100.0070.00320.48
8.2.90.0040.00419.70
8.2.80.0040.00419.21
8.2.70.0000.00818.03
8.2.60.0100.00018.00
8.2.50.0000.00818.10
8.2.40.0000.00820.42
8.2.30.0040.00420.29
8.2.20.0000.00717.93
8.2.10.0040.00418.11
8.2.00.0030.00318.14
8.1.280.0120.00625.92
8.1.270.0080.00023.97
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00623.84
8.1.230.0080.00319.15
8.1.220.0040.00417.74
8.1.210.0030.00518.77
8.1.200.0060.00617.35
8.1.190.0050.00317.00
8.1.180.0050.00318.10
8.1.170.0060.00318.51
8.1.160.0080.00018.81
8.1.150.0000.00720.18
8.1.140.0040.00419.42
8.1.130.0030.00318.87
8.1.120.0030.00617.46
8.1.110.0000.00917.37
8.1.100.0000.00717.38
8.1.90.0030.00517.38
8.1.80.0080.00017.38
8.1.70.0030.00317.30
8.1.60.0040.00417.51
8.1.50.0040.00417.44
8.1.40.0040.00417.37
8.1.30.0040.00417.51
8.1.20.0030.00617.47
8.1.10.0050.00217.54
8.1.00.0040.00417.36
8.0.300.0000.00819.65
8.0.290.0030.00616.75
8.0.280.0050.00318.43
8.0.270.0000.00717.28
8.0.260.0030.00617.29
8.0.250.0030.00316.97
8.0.240.0080.00017.00
8.0.230.0040.00416.91
8.0.220.0070.00016.88
8.0.210.0040.00416.75
8.0.200.0000.00616.82
8.0.190.0080.00316.93
8.0.180.0030.00516.91
8.0.170.0040.00416.90
8.0.160.0040.00416.95
8.0.150.0050.00616.80
8.0.140.0040.00416.82
8.0.130.0050.00013.32
8.0.120.0040.00416.75
8.0.110.0000.00816.71
8.0.100.0070.00016.75
8.0.90.0070.00016.87
8.0.80.0070.00716.87
8.0.70.0080.00016.76
8.0.60.0070.00016.73
8.0.50.0020.00516.83
8.0.30.0090.00616.93
8.0.20.0110.00917.40
8.0.10.0000.00716.83
8.0.00.0060.01216.84
7.4.330.0000.00515.55
7.4.320.0000.00616.39
7.4.300.0020.00516.44
7.4.290.0000.00716.34
7.4.280.0000.00816.55
7.4.270.0000.00716.54
7.4.260.0000.00716.43
7.4.250.0070.00016.37
7.4.240.0040.00416.36
7.4.230.0030.00316.53
7.4.220.0040.01216.45
7.4.210.0040.01116.37
7.4.200.0070.00016.55
7.4.160.0070.01116.43
7.4.150.0120.00617.40
7.4.140.0090.01317.86
7.4.130.0090.00916.49
7.4.120.0130.01016.47
7.4.110.0120.00616.38
7.4.100.0100.01016.35
7.4.90.0110.00716.55
7.4.80.0060.01019.39
7.4.70.0060.00916.54
7.4.60.0060.00916.59
7.4.50.0070.01116.16
7.4.40.0060.00916.44
7.4.30.0030.01316.51
7.4.00.0000.01415.05
7.3.330.0020.00212.98
7.3.320.0000.00513.11
7.3.310.0090.00016.02
7.3.300.0030.00316.09
7.3.290.0060.00916.22
7.3.280.0140.00416.18
7.3.270.0130.00317.40
7.3.260.0110.00816.20
7.3.250.0110.00716.41
7.3.240.0070.01416.34
7.3.230.0080.00816.39
7.3.210.0070.01016.18
7.3.200.0080.00816.23
7.3.190.0030.01316.48
7.3.180.0100.00716.35
7.3.170.0090.00616.40
7.3.160.0080.00816.23
7.2.330.0100.01016.59
7.2.320.0130.00416.65
7.2.310.0060.01016.36
7.2.300.0120.01216.59
7.2.290.0000.01516.54
7.2.60.0070.00716.82
7.2.00.0070.00719.34
7.1.200.0110.00715.67
7.1.100.0000.01217.92
7.1.70.0000.00816.97
7.1.60.0030.00717.16
7.1.50.0030.01016.80
7.1.30.1830.05736.46
7.1.20.1730.09036.44
7.1.10.2700.06320.36
7.1.00.0170.07020.39
7.0.200.0000.01316.46
7.0.170.1700.06320.04
7.0.160.1900.05720.03
7.0.150.2770.09320.02
7.0.140.4030.07320.14
7.0.130.0030.07319.92
7.0.120.0170.06719.89
7.0.110.0100.08019.94
7.0.100.0170.08020.02
7.0.90.0430.08020.07
7.0.80.3230.06320.00
7.0.70.3830.06020.06
7.0.60.0130.06319.89
7.0.50.3800.07020.05
7.0.40.4630.07320.00
7.0.30.5030.07020.08
7.0.20.0330.05720.07
7.0.10.0200.06720.00
7.0.00.0230.06720.07

preferences:
61.48 ms | 401 KiB | 5 Q