3v4l.org

run code in 300+ PHP versions simultaneously
<?php $t = array( 'a' => 1 ); unset($t['a']); unset($t['b']);

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)
8.3.40.0070.00718.79
8.3.30.0070.00718.84
8.3.20.0040.00420.22
8.3.10.0110.00321.97
8.3.00.0040.00422.27
8.2.170.0080.00822.96
8.2.160.0100.00719.18
8.2.150.0040.00424.18
8.2.140.0030.00624.66
8.2.130.0040.00426.16
8.2.120.0040.00719.15
8.2.110.0040.00422.08
8.2.100.0080.00319.64
8.2.90.0030.00519.09
8.2.80.0050.00318.04
8.2.70.0000.00817.50
8.2.60.0000.00718.03
8.2.50.0080.00018.07
8.2.40.0000.00818.09
8.2.30.0070.00018.11
8.2.20.0040.00417.75
8.2.10.0040.00417.59
8.2.00.0050.00319.38
8.1.270.0030.00522.19
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0090.01218.50
8.1.230.0110.00019.15
8.1.220.0000.00917.74
8.1.210.0040.00418.77
8.1.200.0070.00317.22
8.1.190.0000.00917.40
8.1.180.0030.00618.60
8.1.170.0060.00318.57
8.1.160.0080.00021.98
8.1.150.0000.00718.59
8.1.140.0040.00717.33
8.1.130.0040.00417.78
8.1.120.0030.00317.44
8.1.110.0040.00417.35
8.1.100.0000.00717.34
8.1.90.0070.00017.27
8.1.80.0030.00417.38
8.1.70.0000.00717.37
8.1.60.0040.00417.39
8.1.50.0000.00717.33
8.1.40.0040.00417.39
8.1.30.0030.00517.45
8.1.20.0040.00417.49
8.1.10.0040.00417.45
8.1.00.0040.00417.48
8.0.300.0040.00418.77
8.0.290.0080.00017.16
8.0.280.0030.00318.37
8.0.270.0040.00417.15
8.0.260.0000.00716.73
8.0.250.0000.00916.95
8.0.240.0080.00016.77
8.0.230.0040.00416.87
8.0.220.0070.00016.71
8.0.210.0030.00516.81
8.0.200.0000.00816.81
8.0.190.0070.00316.85
8.0.180.0050.00316.75
8.0.170.0000.00816.87
8.0.160.0000.00716.77
8.0.150.0080.00316.67
8.0.140.0030.00616.75
8.0.130.0030.00313.20
8.0.120.0050.00316.71
8.0.110.0040.00416.73
8.0.100.0050.00216.88
8.0.90.0000.00716.67
8.0.80.0060.00916.83
8.0.70.0000.00716.68
8.0.60.0050.00316.75
8.0.50.0000.00816.83
8.0.30.0130.00816.70
8.0.20.0120.00617.40
8.0.10.0070.00016.93
8.0.00.0150.00616.69
7.4.330.0050.00015.02
7.4.320.0070.00016.59
7.4.300.0000.00616.54
7.4.290.0030.00316.63
7.4.280.0040.00416.55
7.4.270.0000.00816.61
7.4.260.0030.00316.56
7.4.250.0040.00416.47
7.4.240.0020.00616.46
7.4.230.0030.00316.42
7.4.220.0090.00916.48
7.4.210.0080.01016.58
7.4.200.0070.00016.68
7.4.190.0000.00816.75
7.4.160.0140.00716.38
7.4.150.0160.00317.40
7.4.140.0130.00517.86
7.4.130.0040.01616.50
7.4.120.0060.01316.49
7.4.110.0100.00716.45
7.4.100.0130.00716.48
7.4.90.0290.03416.68
7.4.80.0110.00819.39
7.4.70.0110.00616.34
7.4.60.0160.00016.23
7.4.50.0000.00816.42
7.4.40.0060.00922.77
7.4.30.0170.00316.20
7.4.10.0110.00815.71
7.4.00.0050.01115.25
7.3.330.0050.00013.17
7.3.320.0030.00313.03
7.3.310.0030.00316.14
7.3.300.0060.00016.16
7.3.290.0040.01316.30
7.3.280.0090.00716.13
7.3.270.0070.01017.40
7.3.260.0120.00616.22
7.3.250.0120.00516.36
7.3.240.0060.01616.38
7.3.230.0100.00716.39
7.3.210.0100.00616.16
7.3.200.0090.00619.39
7.3.190.0060.01516.23
7.3.180.0030.01216.53
7.3.170.0030.01316.34
7.3.160.0080.00816.14
7.3.130.0110.00815.39
7.3.120.0070.01015.12
7.3.110.0060.01015.29
7.3.100.0050.00715.22
7.3.90.0040.00915.30
7.3.80.0040.01015.29
7.3.70.0070.00615.23
7.3.60.0060.00615.30
7.3.50.0030.00915.16
7.3.40.0040.00615.13
7.3.30.0050.00615.19
7.3.20.0070.00816.90
7.3.10.0080.00616.81
7.3.00.0080.00716.79
7.2.330.0090.00916.64
7.2.320.0090.00916.50
7.2.310.0120.00816.46
7.2.300.0120.00416.20
7.2.290.0140.00716.63
7.2.260.0060.00815.54
7.2.250.0050.01415.79
7.2.240.0040.01015.36
7.2.230.0020.01015.41
7.2.220.0050.01015.35
7.2.210.0040.01115.54
7.2.200.0090.00515.45
7.2.190.0020.01315.40
7.2.180.0030.01015.21
7.2.170.0030.01015.34
7.2.160.0070.01015.36
7.2.150.0020.01217.24
7.2.140.0040.01217.18
7.2.130.0070.00917.02
7.2.120.0070.00716.93
7.2.110.0060.00816.87
7.2.100.0060.00816.93
7.2.90.0090.00617.00
7.2.80.0060.00916.98
7.2.70.0080.00717.00
7.2.60.0070.00916.91
7.2.50.0070.00916.99
7.2.40.0080.00516.95
7.2.30.0070.00917.09
7.2.20.0080.00517.07
7.2.10.0060.00617.06
7.2.00.0090.00917.36
7.1.330.0040.01016.08
7.1.320.0070.00716.21
7.1.310.0040.00816.17
7.1.300.0040.00916.18
7.1.290.0060.00616.15
7.1.280.0060.00716.01
7.1.270.0030.01116.12
7.1.260.0050.00516.13
7.1.250.0060.00815.83
7.1.240.0070.01016.41
7.1.230.0050.00816.44
7.1.220.0050.00816.23
7.1.210.0050.00716.45
7.1.200.0020.01016.38
7.1.190.0100.00316.44
7.1.180.0070.01016.52
7.1.170.0050.01216.15
7.1.160.0030.00716.20
7.1.150.0020.01216.36
7.1.140.0060.00616.20
7.1.130.0010.01116.42
7.1.120.0090.00716.32
7.1.110.0020.01416.25
7.1.100.0070.00916.34
7.1.90.0040.01016.38
7.1.80.0090.00516.31
7.1.70.0030.00516.57
7.1.60.0070.00616.45
7.1.50.0120.00922.53
7.1.40.0060.00716.27
7.1.30.0050.00816.42
7.1.20.0030.00816.34
7.1.10.0080.00216.46
7.1.00.0020.02918.32
7.0.330.0050.01016.10
7.0.320.0050.01116.09
7.0.310.0020.01115.98
7.0.300.0090.00716.09
7.0.290.0030.00915.96
7.0.280.0030.00716.11
7.0.270.0030.01116.00
7.0.260.0070.00915.84
7.0.250.0060.00916.14
7.0.240.0040.00816.18
7.0.230.0050.00615.99
7.0.220.0060.00516.16
7.0.210.0010.01016.04
7.0.200.0050.00816.32
7.0.190.0030.01215.90
7.0.180.0060.00416.17
7.0.170.0060.00916.16
7.0.160.0050.00516.22
7.0.150.0040.00815.97
7.0.140.0050.03118.17
7.0.130.0050.00615.94
7.0.120.0050.00916.25
7.0.110.0080.00515.98
7.0.100.0020.01016.15
7.0.90.0080.00316.16
7.0.80.0050.00915.92
7.0.70.0030.00816.12
7.0.60.0060.03217.37
7.0.50.0110.02316.69
7.0.40.0050.02416.01
7.0.30.0130.03516.13
7.0.20.0110.02016.00
7.0.10.0050.02016.02
7.0.00.0080.02016.17
5.6.400.0060.00914.98
5.6.390.0040.01115.03
5.6.380.0050.00915.03
5.6.370.0090.00215.15
5.6.360.0060.00515.13
5.6.350.0080.00514.99
5.6.340.0070.00615.22
5.6.330.0080.00915.15
5.6.320.0100.00414.96
5.6.310.0060.00514.90
5.6.300.0030.01214.88
5.6.290.0030.00814.88
5.6.280.0090.02617.10
5.6.270.0060.00814.90
5.6.260.0000.01114.90
5.6.250.0030.00615.07
5.6.240.0070.00614.99
5.6.230.0050.00814.97
5.6.220.0050.00615.10
5.6.210.0100.02916.95
5.6.200.0060.02916.05
5.6.190.0070.02616.88
5.6.180.0160.02216.97
5.6.170.0230.02616.88
5.6.160.0020.02616.88
5.6.150.0080.02116.01
5.6.140.0070.01716.13
5.6.130.0060.02616.06
5.6.120.0040.01917.07
5.6.110.0050.01616.98
5.6.100.0040.01817.02
5.6.90.0030.02516.97
5.6.80.0090.02816.80
5.6.70.0060.00815.14
5.6.60.0040.01215.13
5.6.50.0050.00914.81
5.6.40.0070.00514.79
5.6.30.0050.00914.95
5.6.20.0040.00715.06
5.6.10.0080.00815.03
5.6.00.0090.00514.96
5.5.380.0000.01314.89
5.5.370.0040.01014.84
5.5.360.0050.00915.05
5.5.350.0070.02516.74
5.5.340.0070.02815.86
5.5.330.0040.03516.86
5.5.320.0050.02016.54
5.5.310.0100.01516.73
5.5.300.0060.02316.01
5.5.290.0060.01916.06
5.5.280.0070.02416.84
5.5.270.0050.02616.78
5.5.260.0070.02816.87
5.5.250.0080.02916.75
5.5.240.0060.03216.57
5.5.230.0070.00514.91
5.5.220.0060.01014.88
5.5.210.0030.01115.00
5.5.200.0050.00914.87
5.5.190.0030.00914.88
5.5.180.0070.00515.02
5.5.170.0030.01114.70
5.5.160.0040.01114.76
5.5.150.0060.00615.00
5.5.140.0040.01114.85
5.5.130.0050.00914.55
5.5.120.0020.01114.96
5.5.110.0090.00514.85
5.5.100.0080.00515.01
5.5.90.0050.00914.78
5.5.80.0040.00914.78
5.5.70.0100.00515.07
5.5.60.0090.00314.76
5.5.50.0080.00414.64
5.5.40.0040.00914.93
5.5.30.0030.01014.75
5.5.20.0120.00315.04
5.5.10.0070.00815.08
5.5.00.0040.00515.02
5.4.450.0220.02414.67
5.4.440.0150.02614.65
5.4.430.0350.02214.72
5.4.420.0360.01914.70
5.4.410.0360.02914.57
5.4.400.0290.02014.42
5.4.390.0320.02014.46
5.4.380.0100.02414.34
5.4.370.0080.01914.43
5.4.360.0040.01914.33
5.4.350.0070.01712.15
5.4.340.0050.01612.13
5.4.330.0050.00812.23
5.4.320.0060.01912.44
5.4.310.0080.01712.32
5.4.300.0020.01912.27
5.4.290.0060.01912.44
5.4.280.0050.01612.22
5.4.270.0060.02212.34
5.4.260.0020.03214.45
5.4.250.0060.02214.45
5.4.240.0040.02314.40
5.4.230.0110.02114.54
5.4.220.0060.02614.39
5.4.210.0080.02514.47
5.4.200.0020.03114.46
5.4.190.0020.03214.46
5.4.180.0050.02214.59
5.4.170.0060.02014.54
5.4.160.0030.02114.42
5.4.150.0100.01814.46
5.4.140.0050.02113.68
5.4.130.0070.01813.53
5.4.120.0040.02713.59
5.4.110.0060.02713.77
5.4.100.0020.02113.62
5.4.90.0080.01813.61
5.4.80.0020.02413.53
5.4.70.0080.01913.69
5.4.60.0060.01813.57
5.4.50.0050.02213.68
5.4.40.0070.01813.58
5.4.30.0050.02113.76
5.4.20.0080.02413.56
5.4.10.0060.03213.63
5.4.00.0080.02813.43
5.3.290.0060.02312.36
5.3.280.0080.02112.93
5.3.270.0070.02912.91
5.3.260.0090.02412.78
5.3.250.0070.02012.91
5.3.240.0080.02712.71
5.3.230.0040.02412.85
5.3.220.0090.01912.91
5.3.210.0070.02512.80
5.3.200.0040.02112.91
5.3.190.0080.02112.87
5.3.180.0030.02312.92
5.3.170.0040.02812.93
5.3.160.0030.02112.95
5.3.150.0090.02212.93
5.3.140.0070.02512.88
5.3.130.0030.02312.89
5.3.120.0050.02312.90
5.3.110.0040.03112.93
5.3.100.0070.02512.68
5.3.90.0090.02512.65
5.3.80.0090.01912.66
5.3.70.0080.02512.55
5.3.60.0060.02512.75
5.3.50.0050.02212.63
5.3.40.0060.02012.66
5.3.30.0030.02312.53
5.3.20.0040.02312.43
5.3.10.0030.02312.45
5.3.00.0020.02312.44
5.2.170.0030.04311.02
5.2.160.0100.03711.20
5.2.150.0070.04011.16
5.2.140.0100.04011.07
5.2.130.0030.05311.09
5.2.120.0000.04311.10
5.2.110.0070.04010.99
5.2.100.0030.04010.93
5.2.90.0030.04011.11
5.2.80.0070.06011.00
5.2.70.0000.05010.92
5.2.60.0030.04310.96
5.2.50.0130.03310.78
5.2.40.0130.03711.09
5.2.30.0070.03711.11
5.2.20.0030.04010.85
5.2.10.0070.04311.07
5.2.00.0030.04310.77
5.1.60.0070.03310.02
5.1.50.0000.03710.18
5.1.40.0130.04010.12
5.1.30.0070.04310.33
5.1.20.0070.04010.57
5.1.10.0070.03710.12
5.1.00.0100.03710.00
5.0.50.0130.0278.48
5.0.40.0030.0378.59
5.0.30.0030.0408.40
5.0.20.0030.0278.16
5.0.10.0030.0278.32
5.0.00.0030.0408.38
4.4.90.0030.0206.80
4.4.80.0100.0136.80
4.4.70.0000.0236.80
4.4.60.0000.0236.80
4.4.50.0000.0236.80
4.4.40.0000.0376.80
4.4.30.0070.0276.80
4.4.20.0070.0176.80
4.4.10.0100.0176.80
4.4.00.0030.0436.80
4.3.110.0100.0176.80
4.3.100.0030.0176.80
4.3.90.0030.0206.80
4.3.80.0100.0336.80
4.3.70.0030.0176.80
4.3.60.0100.0176.80
4.3.50.0000.0236.80
4.3.40.0030.0376.80
4.3.30.0000.0236.80
4.3.20.0000.0236.80
4.3.10.0030.0206.80
4.3.00.0070.0237.29

preferences:
36.97 ms | 400 KiB | 5 Q