3v4l.org

run code in 300+ PHP versions simultaneously
<?php $orig = [1]; $ref =& $orig[0]; $copy = $orig; $orig[0] = 10; var_dump($copy[0]); //returns 10, should return 1

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)
8.3.60.0130.00716.50
8.3.50.0100.00922.05
8.3.40.0090.00618.67
8.3.30.0100.00318.59
8.3.20.0040.00419.25
8.3.10.0080.00021.77
8.3.00.0000.00818.97
8.2.180.0110.00416.75
8.2.170.0060.01022.96
8.2.160.0150.00022.15
8.2.150.0070.00024.18
8.2.140.0080.00024.66
8.2.130.0060.00317.89
8.2.120.0000.00726.35
8.2.110.0030.00619.25
8.2.100.0080.00417.68
8.2.90.0000.00819.07
8.2.80.0040.00417.97
8.2.70.0090.00017.50
8.2.60.0040.00417.80
8.2.50.0040.00418.09
8.2.40.0040.00422.32
8.2.30.0000.00719.35
8.2.20.0020.00517.54
8.2.10.0050.00217.93
8.2.00.0040.00417.93
8.1.280.0070.01125.92
8.1.270.0040.00423.71
8.1.260.0050.00328.09
8.1.250.0000.00828.09
8.1.240.0080.00020.77
8.1.230.0070.00419.08
8.1.220.0070.00017.74
8.1.210.0050.00318.77
8.1.200.0030.00617.23
8.1.190.0030.00517.23
8.1.180.0040.00418.10
8.1.170.0030.00618.38
8.1.160.0000.00720.68
8.1.150.0000.00820.79
8.1.140.0040.00419.50
8.1.130.0030.00717.63
8.1.120.0030.00317.39
8.1.110.0040.00417.29
8.1.100.0000.00817.42
8.1.90.0040.00417.43
8.1.80.0050.00317.46
8.1.70.0000.00717.26
8.1.60.0050.00217.56
8.1.50.0080.00017.40
8.1.40.0070.00017.38
8.1.30.0030.00617.46
8.1.20.0040.00417.54
8.1.10.0040.00417.37
8.1.00.0070.00017.47
8.0.300.0000.00718.77
8.0.290.0040.00416.75
8.0.280.0000.00718.30
8.0.270.0070.00017.09
8.0.260.0030.00317.24
8.0.250.0030.00316.88
8.0.240.0030.00516.75
8.0.230.0030.00616.85
8.0.220.0040.00416.69
8.0.210.0040.00416.81
8.0.200.0070.00016.89
8.0.190.0000.00916.88
8.0.180.0000.00716.81
8.0.170.0040.00416.86
8.0.160.0030.00316.84
8.0.150.0080.00016.68
8.0.140.0000.00716.61
8.0.130.0000.00613.20
8.0.120.0030.00516.69
8.0.110.0000.00716.70
8.0.100.0070.00016.75
8.0.90.0050.00216.80
8.0.80.0030.01916.83
8.0.70.0070.00016.62
8.0.60.0000.00716.77
8.0.50.0040.00416.64
8.0.30.0100.00917.04
8.0.20.0100.01017.40
8.0.10.0070.00016.94
8.0.00.0030.01716.86
7.4.330.0000.00515.08
7.4.320.0030.00316.47
7.4.300.0040.00416.42
7.4.290.0000.00716.54
7.4.280.0000.01016.51
7.4.270.0000.00716.38
7.4.260.0040.00216.39
7.4.250.0040.00416.41
7.4.240.0040.00416.38
7.4.230.0070.00016.51
7.4.220.0100.01016.33
7.4.210.0050.00916.44
7.4.200.0000.00716.35
7.4.160.0070.01116.23
7.4.150.0120.00617.40
7.4.140.0090.00817.86
7.4.130.0170.00616.46
7.4.120.0070.01016.38
7.4.110.0110.00816.45
7.4.100.0040.01316.45
7.4.90.0060.01216.50
7.4.80.0060.00919.39
7.4.70.0150.00016.26
7.4.60.0100.00716.53
7.4.50.0070.01116.29
7.4.40.0060.01016.42
7.4.30.0110.00616.51
7.4.10.0070.00915.50
7.4.00.0050.01215.27
7.3.330.0000.00513.03
7.3.320.0000.00513.11
7.3.310.0030.00316.14
7.3.300.0070.00016.21
7.3.290.0070.00016.23
7.3.280.0100.00916.28
7.3.270.0060.01317.40
7.3.260.0050.01316.35
7.3.250.0090.01216.42
7.3.240.0060.01316.22
7.3.230.0090.00816.39
7.3.210.0130.00316.34
7.3.200.0110.00616.40
7.3.190.0080.01016.49
7.3.180.0100.00716.11
7.3.170.0060.00916.21
7.3.160.0090.00616.26
7.3.130.0050.01315.40
7.3.120.0050.01315.49
7.3.110.0050.01115.39
7.3.100.0110.00315.70
7.3.90.0050.00915.66
7.3.80.0070.00815.59
7.3.70.0000.01215.44
7.3.60.0070.00815.52
7.3.50.0080.00715.46
7.3.40.0070.00715.55
7.3.30.0060.01015.47
7.3.20.0050.01017.24
7.3.10.0060.00916.92
7.3.00.0060.00716.94
7.2.330.0150.00316.60
7.2.320.0060.01016.71
7.2.310.0150.00316.62
7.2.300.0160.00716.61
7.2.290.0070.01016.68
7.2.260.0050.01515.49
7.2.250.0000.01915.71
7.2.240.0030.01115.74
7.2.230.0090.00615.65
7.2.220.0050.01115.61
7.2.210.0060.00815.71
7.2.200.0050.00815.79
7.2.190.0070.00715.74
7.2.180.0030.00915.64
7.2.170.0030.01015.67
7.2.160.0060.00915.67
7.2.150.0080.00717.60
7.2.140.0100.00617.38
7.2.130.0060.00817.06
7.2.120.0080.00616.99
7.2.110.0060.00917.00
7.2.100.0040.00717.11
7.2.90.0090.00617.02
7.2.80.0080.00717.09
7.2.70.0070.00917.13
7.2.60.0080.00816.94
7.2.50.0070.00716.98
7.2.40.0050.00917.05
7.2.30.0060.00817.09
7.2.20.0070.00717.16
7.2.10.0050.00916.99
7.2.00.0080.00717.51
7.1.330.0070.00816.56
7.1.320.0000.01216.56
7.1.310.0050.00716.51
7.1.300.0040.00816.64
7.1.290.0060.01016.65
7.1.280.0080.00316.58
7.1.270.0040.01016.55
7.1.260.0070.00716.64
7.1.250.0070.00816.10
7.1.240.0010.01516.38
7.1.230.0060.00916.28
7.1.220.0070.00416.28
7.1.210.0030.00916.18
7.1.200.0080.00716.09
7.1.190.0030.00816.13
7.1.180.0060.00816.32
7.1.170.0060.00616.20
7.1.160.0030.00716.18
7.1.150.0050.00616.27
7.1.140.0030.00816.17
7.1.130.0070.00516.24
7.1.120.0050.00616.25
7.1.110.0020.01116.30
7.1.100.0040.01016.80
7.1.90.0040.00916.25
7.1.80.0060.00816.16
7.1.70.0080.00216.48
7.1.60.0060.00716.41
7.1.50.0070.00616.25
7.1.40.0070.00716.31
7.1.30.0020.00716.10
7.1.20.0060.00716.33
7.1.10.0060.00716.24
7.1.00.0040.02517.85
7.0.330.0070.00815.84
7.0.320.0070.00715.82
7.0.310.0030.01115.83
7.0.300.0070.00815.86
7.0.290.0040.01115.90
7.0.280.0070.00615.97
7.0.270.0080.00316.00
7.0.260.0050.00815.85
7.0.250.0050.00615.97
7.0.240.0070.00715.91
7.0.230.0080.00515.90
7.0.220.0040.00815.90
7.0.210.0080.00415.93
7.0.200.0060.00816.11
7.0.190.0050.00915.96
7.0.180.0040.00715.96
7.0.170.0030.00815.95
7.0.160.0040.00815.92
7.0.150.0080.00515.94
7.0.140.0020.00916.05
7.0.130.0070.00615.87
7.0.120.0040.00915.96
7.0.110.0040.00615.91
7.0.100.0050.00915.96
7.0.90.0030.00916.00
7.0.80.0060.00715.88
7.0.70.0050.00615.88
7.0.60.0090.01716.92
7.0.50.0060.02316.97
7.0.40.0060.01815.57
7.0.30.0070.02115.53
7.0.20.0060.02115.55
7.0.10.0080.02115.53
7.0.00.0090.01815.58
5.6.400.0050.00715.34
5.6.390.0070.00215.02
5.6.380.0050.00914.97
5.6.370.0070.00614.83
5.6.360.0060.00814.76
5.6.350.0080.00814.96
5.6.340.0040.00914.92
5.6.330.0090.00814.94
5.6.320.0050.00814.78
5.6.310.0090.00414.92
5.6.300.0050.01114.81
5.6.290.0070.00214.95
5.6.280.0040.02616.46
5.6.270.0030.00814.82
5.6.260.0080.00514.83
5.6.250.0030.01014.90
5.6.240.0060.00414.77
5.6.230.0070.00614.72
5.6.220.0050.00914.89
5.6.210.0090.01716.24
5.6.200.0080.02116.38
5.6.190.0070.02016.26
5.6.180.0050.02316.31
5.6.170.0100.01816.44
5.6.160.0080.01816.35
5.6.150.0100.01616.38
5.6.140.0050.02216.32
5.6.130.0070.02016.36
5.6.120.0160.01616.39
5.6.110.0170.01716.35
5.6.100.0090.01916.34
5.6.90.0060.02316.35
5.6.80.0090.01816.18
5.6.70.0070.02016.10
5.6.60.0080.01816.21
5.6.50.0090.01716.07
5.6.40.0090.01916.11
5.6.30.0130.01616.15
5.6.20.0060.01916.14
5.6.10.0100.01716.12
5.6.00.0060.02416.05
5.5.380.0040.00613.65
5.5.370.0060.00813.67
5.5.360.0080.00313.69
5.5.350.0080.02015.39
5.5.340.0080.01915.46
5.5.330.0060.01715.42
5.5.320.0090.01915.33
5.5.310.0050.02215.56
5.5.300.0140.01615.54
5.5.290.0160.01715.56
5.5.280.0100.01915.41
5.5.270.0150.01715.61
5.5.260.0080.01915.58
5.5.250.0120.01715.48
5.5.240.0080.02015.29
5.5.230.0100.01715.29
5.5.220.0080.01915.36
5.5.210.0120.01615.30
5.5.200.0120.01615.18
5.5.190.0100.01815.21
5.5.180.0090.01715.34
5.5.170.0050.00413.57
5.5.160.0130.01315.28
5.5.150.0100.01615.45
5.5.140.0090.01815.22
5.5.130.0100.01415.34
5.5.120.0050.02115.22
5.5.110.0060.02015.30
5.5.100.0070.01915.28
5.5.90.0060.01915.25
5.5.80.0110.01415.21
5.5.70.0060.01815.26
5.5.60.0040.02115.21
5.5.50.0120.01415.24
5.5.40.0080.01715.23
5.5.30.0100.01815.25
5.5.20.0090.01815.21
5.5.10.0080.01815.12
5.5.00.0070.01715.04

preferences:
66.45 ms | 401 KiB | 5 Q