3v4l.org

run code in 300+ PHP versions simultaneously
<?php $u = 1; function f() { global $u; unset($u); $u = 2; } function f2() { global $u; var_dump($u); } f(); f2();

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)
8.3.60.0140.00718.55
8.3.50.0060.00916.26
8.3.40.0120.00618.60
8.3.30.0090.00618.57
8.3.20.0000.00720.21
8.3.10.0050.00521.81
8.3.00.0040.00421.01
8.2.180.0110.01118.54
8.2.170.0070.01022.96
8.2.160.0000.01422.18
8.2.150.0080.00024.18
8.2.140.0050.00324.66
8.2.130.0000.00822.25
8.2.120.0040.00426.35
8.2.110.0090.00021.00
8.2.100.0110.00017.91
8.2.90.0050.00319.08
8.2.80.0030.00617.97
8.2.70.0050.00317.50
8.2.60.0070.00017.93
8.2.50.0040.00418.10
8.2.40.0000.00720.52
8.2.30.0040.00419.05
8.2.20.0000.00718.06
8.2.10.0000.00717.91
8.2.00.0000.00718.05
8.1.280.0130.00725.92
8.1.270.0080.00023.79
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0080.00022.19
8.1.230.0040.00817.42
8.1.220.0000.00817.74
8.1.210.0030.00618.77
8.1.200.0100.00017.23
8.1.190.0040.00417.23
8.1.180.0050.00318.10
8.1.170.0030.00518.47
8.1.160.0040.00418.81
8.1.150.0000.00720.12
8.1.140.0080.00019.36
8.1.130.0030.00318.88
8.1.120.0040.00417.25
8.1.110.0000.00717.45
8.1.100.0080.00017.37
8.1.90.0070.00217.22
8.1.80.0030.00317.36
8.1.70.0070.00017.27
8.1.60.0000.00717.57
8.1.50.0070.00017.39
8.1.40.0050.00317.54
8.1.30.0050.00317.66
8.1.20.0000.00817.57
8.1.10.0040.00417.56
8.1.00.0000.00817.40
8.0.300.0000.00718.77
8.0.290.0040.00416.58
8.0.280.0040.00418.30
8.0.270.0040.00417.18
8.0.260.0060.00016.72
8.0.250.0040.00416.92
8.0.240.0000.00716.81
8.0.230.0050.00316.86
8.0.220.0000.00716.78
8.0.210.0000.00716.82
8.0.200.0040.00416.89
8.0.190.0030.00616.89
8.0.180.0030.00316.89
8.0.170.0000.00716.87
8.0.160.0070.00016.80
8.0.150.0000.00716.72
8.0.140.0000.00716.80
8.0.130.0060.00013.31
8.0.120.0040.00416.79
8.0.110.0070.00016.64
8.0.100.0070.00016.88
8.0.90.0000.00816.76
8.0.80.0100.00616.88
8.0.70.0040.00416.76
8.0.60.0000.00716.69
8.0.50.0040.00416.80
8.0.30.0120.00716.96
8.0.20.0110.00817.40
8.0.10.0000.00716.88
8.0.00.0120.00616.80
7.4.330.0000.00515.55
7.4.320.0030.00316.48
7.4.300.0030.00316.59
7.4.290.0070.00416.61
7.4.280.0030.00616.48
7.4.270.0000.00816.54
7.4.260.0030.00313.20
7.4.250.0030.00316.40
7.4.240.0000.00716.51
7.4.230.0040.00416.61
7.4.220.0120.00616.61
7.4.210.0090.01116.61
7.4.200.0040.00416.34
7.4.160.0120.00316.41
7.4.150.0060.01217.40
7.4.140.0090.00817.86
7.4.130.0130.00416.28
7.4.120.0080.01316.44
7.4.110.0060.01116.52
7.4.100.0080.01416.45
7.4.90.0060.01216.33
7.4.80.0120.00419.39
7.4.70.0130.00316.56
7.4.60.0070.01016.70
7.4.50.0120.00216.41
7.4.40.0100.00716.26
7.4.30.0000.01516.50
7.4.10.0150.00314.92
7.4.00.0090.00614.81
7.3.330.0000.00513.23
7.3.320.0050.00013.20
7.3.310.0030.00316.26
7.3.300.0000.00616.23
7.3.290.0000.00716.05
7.3.280.0070.00816.20
7.3.270.0150.00317.40
7.3.260.0100.00716.47
7.3.250.0130.00716.46
7.3.240.0150.00316.37
7.3.230.0110.00616.15
7.3.210.0070.01016.24
7.3.200.0130.00316.44
7.3.190.0090.00616.51
7.3.180.0140.00716.47
7.3.170.0140.00316.43
7.3.160.0090.00616.31
7.3.130.0000.01614.93
7.3.120.0110.00614.90
7.3.110.0080.00814.66
7.3.100.0080.00814.61
7.3.90.0050.01014.77
7.3.80.0090.00514.79
7.3.70.0050.00914.68
7.3.60.0060.00614.72
7.3.50.0050.01014.70
7.3.40.0050.01014.60
7.3.30.0040.00714.64
7.3.20.0020.01116.54
7.3.10.0050.01016.45
7.3.00.0100.00516.52
7.2.330.0070.01016.25
7.2.320.0110.01116.49
7.2.310.0080.00816.31
7.2.300.0080.00816.48
7.2.290.0080.01416.50
7.2.260.0120.00315.00
7.2.250.0060.01214.90
7.2.240.0110.00614.80
7.2.230.0030.01215.14
7.2.220.0100.00314.83
7.2.210.0080.00414.82
7.2.200.0070.00614.72
7.2.190.0080.00814.81
7.2.180.0090.00514.85
7.2.170.0000.01414.83
7.2.160.0140.00014.86
7.2.150.0000.01016.70
7.2.140.0040.01116.72
7.2.130.0080.00816.70
7.2.120.0120.00616.62
7.2.110.0110.00816.61
7.2.100.0050.00816.62
7.2.90.0180.00616.86
7.2.80.0080.01316.72
7.2.70.0110.00916.40
7.2.60.0090.00416.60
7.2.50.0090.00816.59
7.2.40.0120.01016.71
7.2.30.0110.00716.66
7.2.20.0040.01016.71
7.2.10.0100.00716.52
7.2.00.0090.01016.67
7.1.330.0080.00615.88
7.1.320.0020.01315.75
7.1.310.0070.00715.85
7.1.300.0070.00615.47
7.1.290.0020.00815.58
7.1.280.0060.00815.57
7.1.270.0070.00815.91
7.1.260.0040.00615.73
7.1.250.0060.00515.63
7.1.240.0040.01115.58
7.1.230.0070.01015.61
7.1.220.0030.01015.50
7.1.210.0030.00915.86
7.1.200.0050.00615.73
7.1.190.0060.00615.90
7.1.180.0030.01015.86
7.1.170.0030.01115.90
7.1.160.0040.00415.88
7.1.150.0000.01315.72
7.1.140.0070.00715.80
7.1.130.0070.00715.54
7.1.120.0060.00915.80
7.1.110.0000.01215.76
7.1.100.0000.01115.87
7.1.90.0040.00715.70
7.1.80.0000.01315.91
7.1.70.0050.00516.47
7.1.60.0490.00624.42
7.1.50.0330.00824.31
7.1.40.0350.01024.07
7.1.30.0110.01024.15
7.1.20.0320.01224.42
7.1.10.0100.01015.22
7.1.00.0280.01015.46
7.0.330.0070.01015.49
7.0.320.0100.00315.27
7.0.310.0000.01115.39
7.0.300.0040.00415.27
7.0.290.0120.00315.32
7.0.280.0000.00915.22
7.0.270.0070.00715.61
7.0.260.0130.00015.34
7.0.250.0060.00615.38
7.0.240.0040.00715.45
7.0.230.0060.00615.16
7.0.220.0080.00415.41
7.0.210.0080.00015.46
7.0.200.0320.00415.02
7.0.190.0280.00815.07
7.0.180.0290.00514.75
7.0.170.0070.00614.94
7.0.160.0360.00814.75
7.0.150.0530.00714.94
7.0.140.0540.00715.10
7.0.130.0080.00815.09
7.0.120.0460.00914.99
7.0.110.0040.01214.87
7.0.100.0400.01114.88
7.0.90.0030.01214.88
7.0.80.0490.00915.07
7.0.70.0550.01014.92
7.0.60.0550.00814.91
7.0.50.0250.00514.95
7.0.40.0430.01414.03
7.0.30.0070.01014.15
7.0.20.0050.01214.01
7.0.10.0020.01113.87
7.0.00.0330.00814.06
5.6.400.0030.00614.44
5.6.390.0060.00614.20
5.6.380.0100.00613.74
5.6.370.0000.00914.07
5.6.360.0030.00514.48
5.6.350.0070.00714.02
5.6.340.0060.00313.87
5.6.330.0040.01114.23
5.6.320.0080.00314.29
5.6.310.0000.01414.06
5.6.300.0030.00614.44
5.6.290.0060.00613.98
5.6.280.0000.01614.16
5.6.270.0030.00914.14
5.6.260.0030.01214.30
5.6.250.0030.01414.25
5.6.240.0040.00814.15
5.6.230.0090.00014.39
5.6.220.0030.01014.09
5.6.210.0080.00414.01
5.6.200.0040.00414.31
5.6.190.0120.00314.07
5.6.180.0030.01014.13
5.6.170.0040.00414.30
5.6.160.0030.00814.16
5.6.150.0000.01214.31
5.6.140.0110.00314.03
5.6.130.0040.01114.19
5.6.120.0070.00714.43
5.6.110.0070.01014.18
5.6.100.0120.00614.22
5.6.90.0100.00014.39
5.6.80.0070.00314.16
5.6.70.0030.01013.98
5.6.60.0030.01013.84
5.6.50.0040.00814.07
5.6.40.0060.00314.02
5.6.30.0040.00813.83
5.6.20.0000.01014.20
5.6.10.0030.01014.18
5.6.00.0090.00614.16

preferences:
56.96 ms | 400 KiB | 5 Q