3v4l.org

run code in 300+ PHP versions simultaneously
<?php $v = array(10, 20); $a = 'v'; $$a[0] = 5; // $v is [5, 20] var_dump($v); $v = array(10, 20); $a = 'v'; ${$a[0]} = 5; // $v is 5 var_dump($v); $v = array(10, 20); $a = 'v'; ${$a}[0] = 5; // $ gets first shot at $a, $v is [5, 20] var_dump($v);

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)
8.3.40.0140.00718.79
8.3.30.0040.01118.71
8.3.20.0070.01020.11
8.3.10.0080.00021.61
8.3.00.0100.00023.61
8.2.170.0110.00422.96
8.2.160.0000.01420.27
8.2.150.0030.00624.18
8.2.140.0000.01424.66
8.2.130.0040.00421.00
8.2.120.0040.00426.35
8.2.110.0040.00421.18
8.2.100.0030.00818.05
8.2.90.0060.00319.17
8.2.80.0000.00817.97
8.2.70.0030.00617.63
8.2.60.0070.00417.93
8.2.50.0000.00918.07
8.2.40.0090.00020.55
8.2.30.0030.00319.52
8.2.20.0030.00617.71
8.2.10.0000.00818.11
8.2.00.0070.00018.16
8.1.270.0000.00822.01
8.1.260.0040.00428.09
8.1.250.0040.00428.09
8.1.240.0070.00422.64
8.1.230.0040.00719.14
8.1.220.0050.00317.77
8.1.210.0040.00418.77
8.1.200.0030.00617.35
8.1.190.0040.00417.13
8.1.180.0040.00418.10
8.1.170.0000.00918.50
8.1.160.0040.00420.68
8.1.150.0050.00518.80
8.1.140.0040.00419.61
8.1.130.0040.00417.69
8.1.120.0000.00717.37
8.1.110.0030.00617.36
8.1.100.0040.00417.35
8.1.90.0040.00417.48
8.1.80.0000.00717.50
8.1.70.0000.00817.36
8.1.60.0000.00817.63
8.1.50.0000.00817.43
8.1.40.0080.00017.56
8.1.30.0030.00617.47
8.1.20.0000.00717.64
8.1.10.0000.00717.46
8.1.00.0050.00317.39
8.0.300.0000.00818.77
8.0.290.0040.00416.75
8.0.280.0000.00718.48
8.0.270.0000.00717.26
8.0.260.0030.00317.30
8.0.250.0000.00716.82
8.0.240.0040.00416.84
8.0.230.0030.00316.98
8.0.220.0030.00516.86
8.0.210.0040.00416.77
8.0.200.0000.00816.96
8.0.190.0040.00416.95
8.0.180.0040.00416.86
8.0.170.0070.00016.84
8.0.160.0000.00716.91
8.0.150.0040.00416.84
8.0.140.0040.00416.74
8.0.130.0000.00513.29
8.0.120.0080.00016.88
8.0.110.0080.00016.80
8.0.100.0080.00016.91
8.0.90.0000.00717.00
8.0.80.0130.01016.86
8.0.70.0040.00416.73
8.0.60.0030.00416.93
8.0.50.0040.00416.93
8.0.30.0130.00916.98
8.0.20.0120.00817.40
8.0.10.0000.00716.87
8.0.00.0060.01216.63
7.4.330.0050.00016.66
7.4.320.0000.00616.50
7.4.300.0040.00416.58
7.4.290.0070.00016.50
7.4.280.0070.00016.50
7.4.270.0030.00316.60
7.4.260.0070.00016.46
7.4.250.0000.00816.43
7.4.240.0000.00716.54
7.4.230.0030.00316.61
7.4.220.0120.01316.59
7.4.210.0060.01016.51
7.4.200.0070.00016.25
7.4.160.0090.00916.48
7.4.150.0100.00917.40
7.4.140.0140.00617.86
7.4.130.0130.01016.44
7.4.120.0090.00816.45
7.4.110.0070.01016.69
7.4.100.0090.01216.51
7.4.90.0110.00716.57
7.4.80.0140.01119.39
7.4.70.0170.00616.55
7.4.60.0090.00916.74
7.4.50.0100.00316.45
7.4.40.0030.01316.53
7.4.30.0130.00616.51
7.4.10.0090.00615.23
7.4.00.0060.01014.80
7.3.330.0000.00513.18
7.3.320.0000.00513.15
7.3.310.0030.00316.30
7.3.300.0030.00316.26
7.3.290.0080.01016.22
7.3.280.0060.01016.23
7.3.270.0130.00417.40
7.3.260.0140.00516.29
7.3.250.0110.00716.41
7.3.240.0110.00916.37
7.3.230.0130.00416.56
7.3.210.0070.01016.25
7.3.200.0100.00619.39
7.3.190.0070.01016.54
7.3.180.0140.00716.28
7.3.170.0080.00916.27
7.3.160.0150.00416.41
7.3.130.0070.01014.84
7.3.120.0100.00314.92
7.3.110.0100.00714.69
7.3.100.0030.00914.73
7.3.90.0060.01014.88
7.3.80.0050.00514.79
7.3.70.0090.00614.90
7.3.60.0040.01114.87
7.3.50.0080.00015.01
7.3.40.0040.00814.72
7.3.30.0050.00514.82
7.3.20.0040.01416.39
7.3.10.0110.00316.62
7.3.00.0060.00816.54
7.2.330.0080.01216.62
7.2.320.0190.00316.58
7.2.310.0100.01016.65
7.2.300.0090.01216.75
7.2.290.0150.00316.60
7.2.260.0060.00915.17
7.2.250.0040.01415.04
7.2.240.0080.00814.91
7.2.230.0040.00814.80
7.2.220.0100.00714.92
7.2.210.0000.01514.83
7.2.200.0050.00514.98
7.2.190.0060.00615.00
7.2.180.0040.00415.01
7.2.170.0040.00814.81
7.2.160.0090.00914.85
7.2.150.0030.00616.76
7.2.140.0040.01116.87
7.2.130.0060.00616.63
7.2.120.0070.00416.94
7.2.110.0060.00616.93
7.2.100.0060.00916.69
7.2.90.0030.01416.90
7.2.80.0090.01016.64
7.2.70.0040.01117.03
7.2.60.0060.00616.73
7.2.50.0000.01716.73
7.2.40.0000.01616.93
7.2.30.0070.00716.93
7.2.20.0000.01516.55
7.2.10.0100.00716.75
7.2.00.0030.01017.90
7.1.330.0000.01415.76
7.1.320.0090.00615.82
7.1.310.0050.00315.72
7.1.300.0100.00315.74
7.1.290.0000.01015.59
7.1.280.0060.00315.88
7.1.270.0060.00615.79
7.1.260.0040.00815.69
7.1.250.0060.00615.74
7.1.240.0000.01916.01
7.1.230.0070.00715.73
7.1.220.0030.01315.49
7.1.210.0000.01315.80
7.1.200.0070.00415.69
7.1.190.0030.00815.93
7.1.180.0090.00315.91
7.1.170.0030.00715.91
7.1.160.0070.00315.93
7.1.150.0090.00615.77
7.1.140.0030.00615.90
7.1.130.0070.00715.87
7.1.120.0060.00615.57
7.1.110.0060.00615.72
7.1.100.0050.00916.82
7.1.90.0070.00715.43
7.1.80.0000.00915.59
7.1.70.0020.00916.48
7.1.60.0050.01317.53
7.1.50.0140.00925.16
7.1.40.0070.00715.39
7.1.30.0030.00715.71
7.1.20.0030.01015.76
7.1.10.0030.00615.63
7.1.00.0050.04119.11
7.0.330.0070.00715.23
7.0.320.0030.00915.40
7.0.310.0030.00615.34
7.0.300.0030.00915.17
7.0.290.0040.00415.43
7.0.280.0000.01315.52
7.0.270.0060.00315.50
7.0.260.0140.00015.64
7.0.250.0090.00015.61
7.0.240.0070.00715.67
7.0.230.0120.00315.36
7.0.220.0070.01015.41
7.0.210.0000.00915.47
7.0.200.0030.00816.15
7.0.190.0040.00715.27
7.0.180.0090.00015.54
7.0.170.0040.00815.45
7.0.160.0040.01115.28
7.0.150.0040.00715.25
7.0.140.0110.00415.39
7.0.130.0030.00815.45
7.0.120.0060.00615.49
7.0.110.0040.00815.50
7.0.100.0060.00615.38
7.0.90.0070.00715.51
7.0.80.0090.00615.55
7.0.70.0030.00915.48
7.0.60.0070.04218.65
7.0.50.0080.03316.49
7.0.40.0080.02916.72
7.0.30.0130.03516.73
7.0.20.0150.02416.79
7.0.10.0080.03516.77
7.0.00.0020.03316.69
5.6.400.0030.00914.52
5.6.390.0060.00614.29
5.6.380.0030.00714.07
5.6.370.0070.00314.52
5.6.360.0090.00314.67
5.6.350.0090.00914.45
5.6.340.0000.01214.26
5.6.330.0040.00814.64
5.6.320.0100.00314.49
5.6.310.0000.01414.68
5.6.300.0030.01013.96
5.6.290.0060.00914.54
5.6.280.0090.01817.46
5.6.270.0120.00314.59
5.6.260.0060.00614.37
5.6.250.0110.00414.36
5.6.240.0060.00614.62
5.6.230.0060.00914.51
5.6.220.0090.00614.05
5.6.210.0080.03717.72
5.6.200.0070.04016.28
5.6.190.0070.02617.36
5.6.180.0220.03317.35
5.6.170.0130.02317.42
5.6.160.0080.03517.29
5.6.150.0090.02816.39
5.6.140.0020.02816.16
5.6.130.0120.02516.18
5.6.120.0050.04717.70
5.6.110.0070.04517.80
5.6.100.0110.01817.67
5.6.90.0040.03417.73
5.6.80.0060.04017.45
5.6.70.0110.00414.16
5.6.60.0030.00714.42
5.6.50.0030.00914.09
5.6.40.0040.00714.36
5.6.30.0030.00514.34
5.6.20.0120.00314.24
5.6.10.0070.00714.13
5.6.00.0000.01314.54
5.5.380.0030.01214.13
5.5.370.0070.00714.39
5.5.360.0040.00414.60
5.5.350.2080.01817.26
5.5.340.0030.03716.17
5.5.330.0050.04617.30
5.5.320.0280.03517.21
5.5.310.0190.03717.17
5.5.300.0060.03616.18
5.5.290.0020.03116.23
5.5.280.0090.04117.60
5.5.270.0020.02617.63
5.5.260.0070.02817.63
5.5.250.0100.03517.48
5.5.240.0080.04517.24
5.5.230.0040.01213.99
5.5.220.0040.01113.90
5.5.210.0060.00314.30
5.5.200.0030.01014.02
5.5.190.0000.01014.20
5.5.180.0030.01114.17
5.5.170.0080.00414.18
5.5.160.0060.00313.76
5.5.150.0090.00013.92
5.5.140.0000.01214.24
5.5.130.0000.01413.81
5.5.120.0040.01114.09
5.5.110.0070.00714.36
5.5.100.0150.00013.89
5.5.90.0040.00414.14
5.5.80.0060.00313.93
5.5.70.0060.00614.04
5.5.60.0030.01014.27
5.5.50.0030.01013.86
5.5.40.0030.00714.13
5.5.30.0080.00413.85
5.5.20.0060.01013.92
5.5.10.0030.01013.76
5.5.00.0000.00813.84

preferences:
53.48 ms | 400 KiB | 5 Q