3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = "abc"; unset($str[0]); echo $str;

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)
8.3.40.0100.00618.88
8.3.30.0070.00718.75
8.3.20.0080.00018.65
8.3.10.0050.00321.22
8.3.00.0020.00521.64
8.2.170.0140.00422.96
8.2.160.0030.01020.35
8.2.150.0110.00424.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0040.00420.90
8.2.110.0090.00020.40
8.2.100.0070.00317.97
8.2.90.0000.00819.11
8.2.80.0040.00417.97
8.2.70.0030.00617.50
8.2.60.0000.00817.93
8.2.50.0060.00318.07
8.2.40.0000.00817.97
8.2.30.0080.00021.28
8.2.20.0000.00717.68
8.2.10.0030.00617.72
8.2.00.0050.00217.79
8.1.270.0080.00023.99
8.1.260.0130.00326.35
8.1.250.0040.00428.09
8.1.240.0090.00022.45
8.1.230.0080.00320.95
8.1.220.0050.00318.77
8.1.210.0100.00018.85
8.1.200.0040.00417.35
8.1.190.0070.00017.39
8.1.180.0060.00618.10
8.1.170.0040.00418.39
8.1.160.0000.00718.86
8.1.150.0040.00418.49
8.1.140.0000.00717.38
8.1.130.0030.00517.86
8.1.120.0000.00717.40
8.1.110.0030.00517.28
8.1.100.0030.00317.31
8.1.90.0030.00417.43
8.1.80.0000.00817.28
8.1.70.0030.00317.35
8.1.60.0100.00017.54
8.1.50.0040.00417.46
8.1.40.0050.00317.54
8.1.30.0040.00417.52
8.1.20.0050.00317.67
8.1.10.0000.00717.58
8.1.00.0030.00517.53
8.0.300.0040.00419.77
8.0.290.0030.00517.04
8.0.280.0050.00218.28
8.0.270.0040.00417.14
8.0.260.0060.00016.81
8.0.250.0000.00816.84
8.0.240.0070.00016.88
8.0.230.0030.00516.98
8.0.220.0070.00016.77
8.0.210.0000.00816.87
8.0.200.0070.00316.83
8.0.190.0040.00416.85
8.0.180.0000.00716.81
8.0.170.0080.00016.86
8.0.160.0070.00016.84
8.0.150.0000.00716.65
8.0.140.0080.00016.85
8.0.130.0000.00613.33
8.0.120.0040.00416.82
8.0.110.0040.00416.83
8.0.100.0020.00516.84
8.0.90.0080.00016.80
8.0.80.0060.00816.87
8.0.70.0030.00416.83
8.0.60.0040.00416.88
8.0.50.0000.00716.79
8.0.30.0110.01017.07
8.0.20.0110.00917.40
8.0.10.0000.00716.87
8.0.00.0070.01616.62
7.4.330.0000.00516.74
7.4.320.0000.00616.53
7.4.300.0000.00716.52
7.4.290.0000.00716.48
7.4.280.0060.00316.63
7.4.270.0030.00316.59
7.4.260.0030.00313.24
7.4.250.0080.00016.56
7.4.240.0000.00716.65
7.4.230.0000.00616.36
7.4.220.0070.01016.48
7.4.210.0090.00916.57
7.4.200.0050.00216.66
7.4.190.0070.00016.57
7.4.160.0060.01016.64
7.4.150.0060.01117.40
7.4.140.0110.01017.86
7.4.130.0050.01216.56
7.4.120.0040.01316.60
7.4.110.0110.00616.72
7.4.100.0100.00716.48
7.4.90.0190.00316.56
7.4.80.0070.01019.39
7.4.70.0060.01316.46
7.4.60.0160.00016.64
7.4.50.0040.00416.40
7.4.40.0070.01022.77
7.4.30.0080.00816.51
7.4.00.0030.01014.94
7.3.330.0050.00013.17
7.3.320.0060.00013.15
7.3.310.0000.00716.45
7.3.300.0000.00716.17
7.3.290.0040.01116.37
7.3.280.0090.00516.32
7.3.270.0050.01117.40
7.3.260.0120.00918.24
7.3.250.0080.01016.38
7.3.240.0150.00316.51
7.3.230.0120.00416.39
7.3.210.0130.00316.50
7.3.200.0100.00719.39
7.3.190.0070.01016.60
7.3.180.0060.01516.24
7.3.170.0130.00716.50
7.3.160.0060.01116.28
7.3.120.0050.01114.83
7.3.110.0060.01215.00
7.3.100.0030.00614.93
7.3.90.0060.00914.79
7.3.80.0000.01415.06
7.3.70.0030.01014.91
7.3.60.0060.01215.00
7.3.50.0080.00014.96
7.3.40.0000.01314.80
7.3.30.0030.01014.64
7.3.20.0060.00616.69
7.3.10.0030.00716.35
7.3.00.0070.00716.64
7.2.330.0070.01116.57
7.2.320.0130.01016.28
7.2.310.0130.00716.55
7.2.300.0060.01116.61
7.2.290.0080.00816.63
7.2.250.0070.01314.85
7.2.240.0000.01514.95
7.2.230.0000.00914.96
7.2.220.0060.00615.06
7.2.210.0000.01614.80
7.2.200.0000.01214.73
7.2.190.0070.00414.86
7.2.180.0040.01114.96
7.2.170.0120.00015.02
7.2.60.0100.00316.95
7.2.00.0040.00819.14
7.1.330.0100.00615.89
7.1.320.0040.00815.41
7.1.310.0100.00715.49
7.1.300.0060.00615.64
7.1.290.0030.01015.61
7.1.280.0000.00915.57
7.1.270.0070.00715.52
7.1.260.0000.01315.56
7.1.200.0100.00015.59
7.1.100.0030.00618.19
7.1.70.0030.00617.17
7.1.60.0110.01419.40
7.1.50.0100.01316.85
7.1.00.0030.03322.33
7.0.200.0270.00316.34
7.0.140.0100.06322.22
7.0.80.0570.08719.87
7.0.70.0600.07719.84
7.0.60.0570.04019.96
7.0.50.0500.06020.27
7.0.40.0100.08020.11
7.0.30.0070.07720.12
7.0.20.0130.08320.13
7.0.10.0070.07320.14
7.0.00.0100.07019.94
5.6.280.0070.07020.77
5.6.230.0070.07320.68
5.6.220.0170.07320.61
5.6.210.0070.07720.58
5.6.200.0130.08021.00
5.6.190.0170.07721.05
5.6.180.0170.06321.02
5.6.170.0070.08021.07
5.6.160.0230.06721.07
5.6.150.0130.07721.07
5.6.140.0030.07021.07
5.6.130.0070.09321.12
5.6.120.0070.04721.04
5.6.110.0100.06321.00
5.6.100.0070.08321.04
5.6.90.0030.04721.10
5.6.80.0100.04020.43
5.6.70.0100.08020.30
5.6.60.0130.07320.41
5.6.50.0170.06020.46
5.6.40.0030.08320.38
5.6.30.0130.04320.49
5.6.20.0100.07320.37
5.6.10.0100.05320.35
5.6.00.0100.06720.38
5.5.370.0030.09020.50
5.5.360.0030.07720.37
5.5.350.0070.07720.38
5.5.340.0130.08020.77
5.5.330.0000.08320.92
5.5.320.0070.07720.87
5.5.310.0170.07720.92
5.5.300.0170.06720.79
5.5.290.0130.04320.89
5.5.280.0030.08320.87
5.5.270.0030.08020.82
5.5.260.0100.08720.73
5.5.250.0130.04720.45
5.5.240.0070.04020.17
5.5.230.0000.09020.27
5.5.220.0100.07720.29
5.5.210.0070.08320.28
5.5.200.0130.07320.17
5.5.190.0070.07719.98
5.5.180.0070.08020.25
5.5.160.0070.07720.23
5.5.150.0030.07320.20
5.5.140.0000.07720.23
5.5.130.0100.07020.26
5.5.120.0030.08319.98
5.5.110.0170.06720.21
5.5.100.0000.04720.06
5.5.90.0130.05720.05
5.5.80.0000.08020.10
5.5.70.0100.06720.05
5.5.60.0030.08320.14
5.5.50.0100.07719.99
5.5.40.0070.04320.05
5.5.30.0070.03720.06
5.5.20.0070.03720.01
5.5.10.0000.06720.02
5.5.00.0070.03720.04
5.4.450.0100.07019.45
5.4.440.0100.04719.44
5.4.430.0030.05019.39
5.4.420.0070.08719.35
5.4.410.0030.04019.27
5.4.400.0070.05018.79
5.4.390.0170.06718.98
5.4.380.0070.06719.04
5.4.370.0070.06719.10
5.4.360.0100.06018.90
5.4.350.0130.06718.95
5.4.340.0030.07718.96
5.4.320.0070.06019.23
5.4.310.0030.08018.95
5.4.300.0000.07019.11
5.4.290.0000.06019.09
5.4.280.0270.05018.83
5.4.270.0030.08719.24
5.4.260.0070.05718.78
5.4.250.0070.04318.97
5.4.240.0100.07719.22
5.4.230.0100.06319.11
5.4.220.0070.08019.05
5.4.210.0070.06718.78
5.4.200.0130.04019.06
5.4.190.0100.04019.09
5.4.180.0100.03719.13
5.4.170.0030.04319.02
5.4.160.0100.03319.09
5.4.150.0100.03318.88
5.4.140.0170.02716.33
5.4.130.0030.04016.28
5.4.120.0030.06716.27
5.4.110.0030.04016.33
5.4.100.0070.03316.23
5.4.90.0030.03716.32
5.4.80.0030.05016.43
5.4.70.0100.03316.43
5.4.60.0100.06316.28
5.4.50.0030.05716.39
5.4.40.0030.03716.45
5.4.30.0030.03716.40
5.4.20.0130.06016.37
5.4.10.0100.03316.18
5.4.00.0030.05715.50
5.3.290.0100.06314.48
5.3.280.0070.04314.42
5.3.270.0100.06314.56
5.3.260.0000.04314.59
5.3.250.0000.04014.54
5.3.240.0000.04014.54
5.3.230.0000.04014.58
5.3.220.0030.04014.55
5.3.210.0030.03714.55
5.3.200.0000.04314.47
5.3.190.0000.06014.39
5.3.180.0000.04014.55
5.3.170.0070.04714.39
5.3.160.0100.04314.55
5.3.150.0030.05014.41
5.3.140.0100.03014.48
5.3.130.0030.04014.45
5.3.120.0000.04314.53
5.3.110.0070.05014.55
5.3.100.0000.04013.86
5.3.90.0000.04014.00
5.3.80.0070.03713.97
5.3.70.0030.03714.01
5.3.60.0070.03713.97
5.3.50.0030.06013.90
5.3.40.0030.06713.91
5.3.30.0030.03313.66
5.3.20.0070.04013.54
5.3.10.0070.05313.45
5.3.00.0030.03313.40
5.2.170.0000.02711.68
5.2.160.0000.03011.68
5.2.150.0000.03711.68
5.2.140.0030.03711.68
5.2.130.0000.03311.68
5.2.120.0000.02711.68
5.2.110.0030.03011.68
5.2.100.0000.02711.68
5.2.90.0030.04311.68
5.2.80.0000.03011.68
5.2.70.0000.03311.68
5.2.60.0030.03011.68
5.2.50.0000.03711.68
5.2.40.0130.03011.68
5.2.30.0030.02711.68
5.2.20.0000.03011.68
5.2.10.0100.03711.68
5.2.00.0030.03011.68
5.1.60.0070.02311.68
5.1.50.0100.02011.68
5.1.40.0000.04311.68
5.1.30.0100.01711.68
5.1.20.0000.02711.68
5.1.10.0000.03011.68
5.1.00.0000.02711.68
5.0.50.0000.02011.68
5.0.40.0000.03311.68
5.0.30.0000.03311.68
5.0.20.0000.01711.68
5.0.10.0030.02011.68
5.0.00.0000.03011.68
4.4.90.0000.01711.68
4.4.80.0000.02011.68
4.4.70.0030.01311.68
4.4.60.0000.01711.68
4.4.50.0030.01011.68
4.4.40.0000.04011.68
4.4.30.0030.01311.68
4.4.20.0000.01711.68
4.4.10.0030.01311.68
4.4.00.0000.04011.68
4.3.110.0030.02311.68
4.3.100.0030.03011.68
4.3.90.0030.01711.68
4.3.80.0000.03711.68
4.3.70.0000.01711.68
4.3.60.0070.03011.68
4.3.50.0000.03311.68
4.3.40.0000.05311.68
4.3.30.0000.03711.68
4.3.20.0000.03711.68
4.3.10.0000.04011.68
4.3.00.0030.02711.68

preferences:
29.62 ms | 400 KiB | 5 Q