3v4l.org

run code in 300+ PHP versions simultaneously
<?php set_time_limit(1); $arr = ['a', 'b']; $child = &$arr; $i = 1; foreach ($child AS $key => $fruit) { $child[$i] = $fruit; unset($child[$key]); $i++; } var_dump($arr);

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)
8.3.60.0110.00818.30
8.3.50.0140.00521.13
8.3.40.0080.00818.71
8.3.30.0110.00419.10
8.3.20.0030.00520.29
8.3.10.0040.00420.53
8.3.00.0090.00019.26
8.2.180.0210.00716.35
8.2.170.0060.00922.96
8.2.160.0090.00520.16
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0080.00022.11
8.2.110.0030.00620.35
8.2.100.0040.00718.03
8.2.90.0000.00719.17
8.2.80.0030.00617.97
8.2.70.0030.00517.50
8.2.60.0040.00717.80
8.2.50.0110.00018.07
8.2.40.0080.00019.78
8.2.30.0070.00318.13
8.2.20.0050.00317.80
8.2.10.0030.00518.04
8.2.00.0030.00617.85
8.1.280.0090.00925.92
8.1.270.0000.00923.96
8.1.260.0070.00026.35
8.1.250.0030.00528.09
8.1.240.0080.00023.88
8.1.230.0030.00919.22
8.1.220.0000.00917.74
8.1.210.0040.00418.77
8.1.200.0060.00317.22
8.1.190.0000.00717.23
8.1.180.0040.00418.10
8.1.170.0050.00318.63
8.1.160.0000.00721.96
8.1.150.0030.00518.92
8.1.140.0050.00317.45
8.1.130.0030.00317.73
8.1.120.0080.00017.49
8.1.110.0040.00417.41
8.1.100.0040.00417.32
8.1.90.0040.00417.45
8.1.80.0030.00317.38
8.1.70.0070.00017.38
8.1.60.0080.00017.56
8.1.50.0030.00517.55
8.1.40.0040.00417.51
8.1.30.0040.00417.59
8.1.20.0040.00417.64
8.1.10.0030.00517.44
8.1.00.0030.00717.34
8.0.300.0000.00718.77
8.0.290.0000.00716.63
8.0.280.0040.00418.40
8.0.270.0000.00817.24
8.0.260.0040.00417.18
8.0.250.0070.00016.95
8.0.240.0030.00316.96
8.0.230.0000.00616.92
8.0.220.0000.00716.88
8.0.210.0020.00516.92
8.0.200.0040.00416.95
8.0.190.0050.00316.84
8.0.180.0040.00416.81
8.0.170.0000.00816.81
8.0.160.0000.00716.79
8.0.150.0030.00316.78
8.0.140.0050.00316.85
8.0.130.0050.00013.25
8.0.120.0050.00316.87
8.0.110.0000.00816.82
8.0.100.0040.00416.92
8.0.90.0000.00716.89
8.0.80.0090.00616.91
8.0.70.0050.00316.96
8.0.60.0040.00416.78
8.0.50.0040.00416.91
8.0.30.0080.01317.09
8.0.20.0110.00817.40
8.0.10.0070.00016.96
8.0.00.0070.01016.74
7.4.330.0050.00015.14
7.4.320.0030.00316.61
7.4.300.0040.00416.55
7.4.290.0070.00016.41
7.4.280.0040.00416.39
7.4.270.0000.00616.50
7.4.260.0030.00516.45
7.4.250.0040.00416.48
7.4.240.0020.00516.46
7.4.230.0040.00416.70
7.4.220.0130.00716.57
7.4.210.0030.01216.55
7.4.200.0030.00316.71
7.4.160.0090.01216.54
7.4.150.0060.01217.40
7.4.140.0110.00817.86
7.4.130.0080.00916.51
7.4.120.0100.00816.47
7.4.110.0030.01316.59
7.4.100.0120.01216.41
7.4.90.0100.00716.32
7.4.80.0070.01019.39
7.4.70.0100.00616.52
7.4.60.0150.00316.57
7.4.50.0040.00416.54
7.4.40.0080.00816.44
7.4.30.0030.01316.53
7.4.10.0080.00917.19
7.4.00.0120.00616.36
7.3.330.0030.00313.01
7.3.320.0000.00513.09
7.3.310.0080.00016.40
7.3.300.0030.00316.33
7.3.290.0060.01216.38
7.3.280.0070.01316.34
7.3.270.0110.00817.40
7.3.260.0100.00716.28
7.3.250.0070.01016.48
7.3.240.0190.00316.63
7.3.230.0030.01316.39
7.3.210.0080.00916.39
7.3.200.0110.01319.39
7.3.190.0100.00716.22
7.3.180.0060.01016.28
7.3.170.0130.00316.27
7.3.160.0160.00016.41
7.3.130.0070.01017.16
7.3.120.0100.00817.14
7.3.110.0030.01117.19
7.3.100.0060.00717.24
7.3.90.0030.01117.03
7.3.80.0050.00717.16
7.3.70.0080.00517.19
7.3.60.0070.00717.22
7.3.50.0060.00817.13
7.3.40.0050.00617.20
7.3.30.0100.00617.13
7.3.20.0100.00518.02
7.3.10.0020.01117.61
7.3.00.0090.00317.54
7.2.330.0100.00716.54
7.2.320.0060.01116.37
7.2.310.0050.01916.61
7.2.300.0080.00816.41
7.2.290.0060.01616.39
7.2.260.0050.01417.25
7.2.250.0050.01417.35
7.2.240.0020.01417.07
7.2.230.0020.01517.35
7.2.220.0060.00717.07
7.2.210.0020.00917.20
7.2.200.0080.00817.21
7.2.190.0050.01117.18
7.2.180.0070.00917.27
7.2.170.0070.00717.12
7.2.160.0050.01217.25
7.2.150.0070.00718.25
7.2.140.0060.00818.18
7.2.130.0030.01017.76
7.2.120.0060.00617.79
7.2.110.0090.00417.70
7.2.100.0070.00517.78
7.2.90.0030.01017.77
7.2.80.0080.00617.71
7.2.70.0060.00917.72
7.2.60.0040.00917.62
7.2.50.0070.00817.82
7.2.40.0070.00917.75
7.2.30.0030.00917.83
7.2.20.0070.00817.74
7.2.10.0040.00917.66
7.2.00.0100.00518.03
7.1.330.0070.00717.71
7.1.320.0090.00517.73
7.1.310.0070.00717.58
7.1.300.0040.00917.65
7.1.290.0060.00717.61
7.1.280.0080.00417.69
7.1.270.0070.00917.68
7.1.260.0030.01017.66
7.1.250.0080.00417.09
7.1.240.0100.00517.64
7.1.230.0050.00917.70
7.1.220.0070.00717.64
7.1.210.0100.00417.66
7.1.200.0020.00717.06
7.1.190.0090.00617.69
7.1.180.0050.01017.74
7.1.170.0070.00417.71
7.1.160.0050.00617.59
7.1.150.0090.00717.63
7.1.140.0080.00617.71
7.1.130.0010.01017.71
7.1.120.0100.00317.60
7.1.110.0010.01017.51
7.1.100.0060.00817.77
7.1.90.0050.01017.64
7.1.80.0100.00617.70
7.1.70.0030.00717.56
7.1.60.0050.01118.14
7.1.50.0110.00417.47
7.1.40.0020.00917.69
7.1.30.0060.00617.65
7.1.20.0070.00617.50
7.1.10.0040.01117.51
7.1.00.0080.02919.17
7.0.330.0050.00917.44
7.0.320.0080.00917.36
7.0.310.0030.00817.35
7.0.300.0060.00817.42
7.0.290.0050.00817.49
7.0.280.0070.00917.42
7.0.270.0050.00617.42
7.0.260.0080.00817.48
7.0.250.0030.00717.43
7.0.240.0030.01017.32
7.0.230.0060.00817.42
7.0.220.0040.00917.46
7.0.210.0050.00817.43
7.0.200.0050.00617.23
7.0.190.0050.00617.37
7.0.180.0040.00917.47
7.0.170.0080.00817.36
7.0.160.0050.00817.46
7.0.150.0080.00517.40
7.0.140.0050.02819.05
7.0.130.0030.00717.53
7.0.120.0050.00617.51
7.0.110.0050.00517.50
7.0.100.0060.00417.49
7.0.90.0070.00717.47
7.0.80.0030.01017.47
7.0.70.0050.00717.54
7.0.60.0080.02918.22
7.0.50.0060.03017.63
7.0.40.0060.03517.69
7.0.30.0100.03117.79
7.0.20.0130.03217.76
7.0.10.0050.02717.71
7.0.00.0040.02017.67
5.6.400.0090.00617.16
5.6.390.0050.00916.86
5.6.380.0060.00916.99
5.6.370.0070.00516.89
5.6.360.0050.01117.13
5.6.350.0060.00416.74
5.6.340.0080.00716.81
5.6.330.0060.00816.98
5.6.320.0100.00416.98
5.6.310.0050.00916.80
5.6.300.0060.00816.89
5.6.290.0080.00816.88
5.6.280.0110.00416.82
5.6.270.0050.00716.86
5.6.260.0060.00816.92
5.6.250.0010.01116.81
5.6.240.0050.00916.90
5.6.230.0080.00917.00
5.6.220.0070.00516.98
5.6.210.0090.02918.24
5.6.200.0120.02717.35
5.6.190.0090.03018.11
5.6.180.0170.02118.10
5.6.170.0120.01918.22
5.6.160.0090.03418.06
5.6.150.0050.02817.26
5.6.140.0060.03317.39
5.6.130.0060.03517.27
5.6.120.0070.03318.29
5.6.110.0070.03218.24
5.6.100.0060.01918.28
5.6.90.0070.03018.41
5.6.80.0050.03217.90
5.6.70.0060.00816.82
5.6.60.0070.00716.83
5.6.50.0050.00917.04
5.6.40.0060.00816.81
5.6.30.0040.01116.88
5.6.20.0050.01016.79
5.6.10.0070.00616.89
5.6.00.0050.00816.88
5.5.380.0030.01016.87
5.5.370.0060.01016.95
5.5.360.0070.00916.88
5.5.350.0090.01818.01
5.5.340.0080.01617.25
5.5.330.0040.02018.01
5.5.320.0200.02218.06
5.5.310.0140.03018.08
5.5.300.0060.02617.33
5.5.290.0060.02217.25
5.5.280.0090.02518.15
5.5.270.0070.02818.16
5.5.260.0050.03518.20
5.5.250.0080.03417.98
5.5.240.0110.02917.90
5.5.230.0040.00616.93
5.5.220.0050.00516.81
5.5.210.0070.00816.93
5.5.200.0050.00816.79
5.5.190.0080.00616.91
5.5.180.0050.00916.88
5.5.170.0060.00716.91
5.5.160.0070.00516.91
5.5.150.0040.01116.91
5.5.140.0060.01016.92
5.5.130.0050.00716.78
5.5.120.0070.00916.62
5.5.110.0030.01016.86
5.5.100.0030.00916.74
5.5.90.0040.00916.82
5.5.80.0060.00816.75
5.5.70.0090.00516.99
5.5.60.0070.00816.80
5.5.50.0050.01016.66
5.5.40.0000.01316.82
5.5.30.0080.00516.80
5.5.20.0050.00716.72
5.5.10.0100.00716.77
5.5.00.0110.00516.87
5.4.450.0050.01616.59
5.4.440.0190.01816.52
5.4.430.0180.01616.56
5.4.420.0240.00416.65
5.4.410.0240.00416.55
5.4.400.0220.00616.50
5.4.390.0250.00616.45
5.4.380.0260.00316.63
5.4.370.0250.00216.54
5.4.360.0290.00016.59
5.4.350.0260.00416.61
5.4.340.0210.00616.45
5.4.330.0000.00815.06
5.4.320.0050.01814.33
5.4.310.0060.01514.18
5.4.300.0070.01514.35
5.4.290.0050.01614.27
5.4.280.0030.01714.31
5.4.270.0040.01914.23
5.4.260.0060.01614.36
5.4.250.0040.01814.29
5.4.240.0080.01514.17
5.4.230.0040.01714.26
5.4.220.0030.01914.15
5.4.210.0090.01314.30
5.4.200.0040.01814.25
5.4.190.0050.01614.28
5.4.180.0020.02014.32
5.4.170.0050.01814.25
5.4.160.0040.01714.20
5.4.150.0060.01714.22
5.4.140.0060.01514.19
5.4.130.0040.01614.09
5.4.120.0060.01514.18
5.4.110.0050.01414.05
5.4.100.0040.02014.09
5.4.90.0080.01414.13
5.4.80.0040.01914.14
5.4.70.0070.01414.14
5.4.60.0050.02214.07
5.4.50.0070.01714.18
5.4.40.0070.01614.11
5.4.30.0030.01814.15
5.4.20.0030.01814.13
5.4.10.0080.01714.08
5.4.00.0070.01713.90
5.3.290.0090.04112.80
5.3.280.0080.03812.71
5.3.270.0050.04312.72
5.3.260.0070.04212.72
5.3.250.0070.03912.72
5.3.240.0090.04712.72
5.3.230.0080.04412.70
5.3.220.0070.03912.68
5.3.210.0070.04512.68
5.3.200.0030.04212.68
5.3.190.0070.03712.68
5.3.180.0080.03712.68
5.3.170.0080.04212.67
5.3.160.0070.03612.67
5.3.150.0100.03612.67
5.3.140.0120.03512.66
5.3.130.0090.03812.66
5.3.120.0070.04412.66
5.3.110.0060.03912.66
5.3.100.0050.04212.12
5.3.90.0060.03812.08
5.3.80.0060.03912.07
5.3.70.0080.03612.07
5.3.60.0070.03512.06
5.3.50.0100.03712.00
5.3.40.0050.03712.00
5.3.30.0080.03911.95
5.3.20.0080.03811.72
5.3.10.0100.03411.70
5.3.00.0070.03911.68
5.2.170.0070.0309.18
5.2.160.0030.0329.18
5.2.150.0060.0319.18
5.2.140.0050.0349.18
5.2.130.0050.0299.14
5.2.120.0020.0359.14
5.2.110.0040.0319.14
5.2.100.0040.0299.14
5.2.90.0060.0319.14
5.2.80.0020.0339.14
5.2.70.0030.0319.14
5.2.60.0030.0329.09
5.2.50.0040.0309.06
5.2.40.0060.0279.04
5.2.30.0040.0309.01
5.2.20.0030.0309.00
5.2.10.0040.0288.92
5.2.00.0050.0288.78
5.1.60.0050.0228.07
5.1.50.0070.0278.06
5.1.40.0050.0268.04
5.1.30.0050.0278.40
5.1.20.0050.0268.42
5.1.10.0020.0288.14
5.1.00.0040.0258.14
5.0.50.0030.0216.62
5.0.40.0060.0186.48
5.0.30.0040.0316.29
5.0.20.0030.0236.26
5.0.10.0050.0246.24
5.0.00.0050.0306.23
4.4.90.0050.0164.78
4.4.80.0020.0184.75
4.4.70.0040.0154.75
4.4.60.0030.0154.76
4.4.50.0050.0154.77
4.4.40.0030.0254.71
4.4.30.0040.0144.76
4.4.20.0050.0144.84
4.4.10.0030.0174.85
4.4.00.0070.0294.76
4.3.110.0050.0164.67
4.3.100.0020.0184.66
4.3.90.0050.0164.63
4.3.80.0050.0234.59
4.3.70.0040.0134.63
4.3.60.0020.0154.63
4.3.50.0010.0174.63
4.3.40.0020.0294.54
4.3.30.0010.0163.28
4.3.20.0030.0153.26
4.3.10.0020.0163.22
4.3.00.0070.01713.59

preferences:
44.4 ms | 401 KiB | 5 Q