3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test_one(&$arr) { $arr = array_reverse($arr); } function test_two(&$arr) { $arr =& array_reverse($arr); } $arr1 = array(1,2,3); $arr2 = array(4,5,6); test_one($arr1); test_two($arr2); print_r($arr1); print_r($arr2);

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)
8.3.70.0070.01016.63
8.3.60.0110.01116.63
8.3.50.0120.00322.02
8.3.40.0100.01018.84
8.3.30.0070.00718.97
8.3.20.0030.00520.21
8.3.10.0080.00021.77
8.3.00.0000.00819.38
8.2.190.0150.00316.58
8.2.180.0040.01518.40
8.2.170.0140.00022.96
8.2.160.0090.00622.08
8.2.150.0090.00024.18
8.2.140.0030.00524.66
8.2.130.0060.00326.16
8.2.120.0040.00419.55
8.2.110.0040.00721.12
8.2.100.0000.01217.75
8.2.90.0000.00819.22
8.2.80.0000.00917.97
8.2.70.0040.00817.38
8.2.60.0040.00417.93
8.2.50.0000.00818.07
8.2.40.0040.00419.75
8.2.30.0040.00417.94
8.2.20.0040.00417.66
8.2.10.0070.00018.05
8.2.00.0040.00417.77
8.1.280.0150.00625.92
8.1.270.0040.01424.66
8.1.260.0000.00826.35
8.1.250.0030.00628.09
8.1.240.0060.00324.02
8.1.230.0090.00317.48
8.1.220.0040.00417.74
8.1.210.0030.00618.77
8.1.200.0030.00717.22
8.1.190.0030.00617.23
8.1.180.0050.00318.10
8.1.170.0030.00520.16
8.1.160.0040.00421.95
8.1.150.0040.00418.75
8.1.140.0000.00717.38
8.1.130.0000.00717.81
8.1.120.0070.00017.43
8.1.110.0000.00717.45
8.1.100.0000.00717.29
8.1.90.0000.00717.36
8.1.80.0000.00717.40
8.1.70.0040.00417.28
8.1.60.0050.00517.50
8.1.50.0030.00517.52
8.1.40.0040.00417.50
8.1.30.0050.00317.60
8.1.20.0070.00017.55
8.1.10.0060.00317.33
8.1.00.0040.00417.41
8.0.300.0000.00718.77
8.0.290.0080.00016.63
8.0.280.0070.00018.43
8.0.270.0000.00717.14
8.0.260.0030.00317.13
8.0.250.0030.00316.99
8.0.240.0030.00316.95
8.0.230.0000.00716.83
8.0.220.0030.00316.89
8.0.210.0070.00016.74
8.0.200.0070.00016.92
8.0.190.0080.00016.93
8.0.180.0040.00416.91
8.0.170.0000.00816.88
8.0.160.0030.00316.96
8.0.150.0070.00016.92
8.0.140.0000.00716.75
8.0.130.0060.00013.32
8.0.120.0080.00016.75
8.0.110.0040.00416.91
8.0.100.0040.00416.90
8.0.90.0090.00016.99
8.0.80.0000.01616.85
8.0.70.0000.00816.85
8.0.60.0030.00516.79
8.0.50.0000.00716.94
8.0.30.0100.01017.02
8.0.20.0230.02017.40
8.0.10.0000.00717.06
8.0.00.0040.01316.70
7.4.330.0020.00215.14
7.4.320.0000.00616.41
7.4.300.0040.00416.59
7.4.290.0040.00416.39
7.4.280.0030.00516.40
7.4.270.0030.00316.35
7.4.260.0030.00316.57
7.4.250.0050.00316.53
7.4.240.0020.00516.53
7.4.230.0030.00316.48
7.4.220.0090.00916.66
7.4.210.0110.00316.55
7.4.200.0050.00316.51
7.4.160.0070.01016.49
7.4.150.0090.00917.40
7.4.140.0150.00917.86
7.4.130.0080.00916.48
7.4.120.0070.01016.46
7.4.110.0090.00916.54
7.4.100.0060.01316.28
7.4.90.0130.01016.41
7.4.80.0110.01219.39
7.4.70.0100.01016.32
7.4.60.0060.00916.54
7.4.50.0030.00516.45
7.4.40.0080.00816.51
7.4.30.0070.01016.42
7.4.00.0030.00914.75
7.3.330.0040.00413.23
7.3.320.0130.00013.30
7.3.310.0030.00316.33
7.3.300.0000.00616.22
7.3.290.0030.00316.17
7.3.280.0090.00816.26
7.3.270.0090.00917.40
7.3.260.0130.00316.30
7.3.250.0060.01116.50
7.3.240.0120.00616.28
7.3.230.0130.00516.53
7.3.210.0030.01316.29
7.3.200.0070.01019.39
7.3.190.0100.01316.38
7.3.180.0060.01016.29
7.3.170.0080.00816.30
7.3.160.0070.01016.41
7.3.10.0110.00716.60
7.3.00.0030.01016.43
7.2.330.0100.00716.61
7.2.320.0070.01016.54
7.2.310.0170.00016.40
7.2.300.0140.00816.23
7.2.290.0110.01116.70
7.2.130.0090.00616.84
7.2.120.0150.00716.84
7.2.110.0070.00716.73
7.2.100.0170.00316.87
7.2.90.0000.01616.86
7.2.80.0150.00816.62
7.2.70.0110.01117.00
7.2.60.0100.00716.71
7.2.50.0110.00716.51
7.2.40.0000.01516.83
7.2.30.0100.00716.80
7.2.20.0120.00616.83
7.2.10.0070.01116.76
7.2.00.0070.01118.04
7.1.250.0060.00615.67
7.1.200.0070.00715.85
7.1.100.0030.00717.90
7.1.70.0000.00817.15
7.1.60.0140.01019.46
7.1.50.0030.01016.93
7.1.00.0000.07322.32
7.0.200.0060.00614.86
7.0.140.0070.06321.91
7.0.60.0100.08019.91
7.0.50.0000.04017.88
7.0.40.0130.08020.25
7.0.30.0270.07720.11
7.0.20.0330.05320.23
7.0.10.0230.07020.06
7.0.00.0100.07020.09
5.6.280.0030.07321.02
5.6.210.0100.04320.55
5.6.200.0130.07318.18
5.6.190.0100.05720.64
5.6.180.0300.07020.61
5.6.170.0230.07020.44
5.6.160.0000.04720.57
5.6.150.0070.03718.15
5.6.140.0070.04718.18
5.6.130.0070.08318.26
5.6.120.0070.08721.00
5.6.110.0000.08720.98
5.6.100.0100.07020.98
5.6.90.0070.08321.04
5.6.80.0130.07320.29
5.6.70.0170.02720.49
5.5.350.0070.08720.43
5.5.340.0070.06017.95
5.5.330.0070.08720.28
5.5.320.0000.05720.26
5.5.310.0270.06320.36
5.5.300.0100.07318.07
5.5.290.0100.07017.98
5.5.280.0030.09320.80
5.5.270.0070.08720.97
5.5.260.0170.07720.87
5.5.250.0070.08320.78
5.5.240.0130.03720.12
5.4.450.0600.05319.70
5.4.440.0300.06019.61
5.4.430.0200.06719.47
5.4.420.0200.07319.38
5.4.410.0170.06019.48
5.4.400.0200.05018.83
5.4.390.0170.05318.63
5.4.380.0170.05318.59
5.4.370.0230.04718.63
5.4.360.0300.04018.63
5.4.350.0130.06018.50
5.4.340.0200.05018.63
5.4.320.0170.05318.74
5.4.310.0170.05018.55
5.4.300.0100.05718.69
5.4.290.0300.04318.73
5.4.280.0170.05318.73
5.4.270.0270.04318.50
5.4.260.0230.04718.83
5.4.250.0100.06318.69
5.4.240.0230.04718.74
5.4.230.0230.04318.68
5.4.220.0270.04318.60
5.4.210.0170.05318.75
5.4.200.0230.04316.70
5.4.190.0170.05018.75
5.4.180.0230.04318.54
5.4.170.0100.06318.71
5.4.160.0130.05718.60
5.4.150.0030.06718.59
5.4.140.0270.04016.30
5.4.130.0130.05016.29
5.4.120.0130.05316.17
5.4.110.0200.04316.31
5.4.100.0200.06716.34
5.4.90.0130.05316.23
5.4.80.0200.04716.43
5.4.70.0230.05016.23
5.4.60.0170.05016.22
5.4.50.0170.04716.40
5.4.40.0170.05016.23
5.4.30.0100.05316.38
5.4.20.0100.05716.21
5.4.10.0070.05716.26
5.4.00.0270.03715.74
5.3.290.0170.05314.76
5.3.280.0030.06314.63
5.3.270.0270.04314.74
5.3.260.0070.06314.64
5.3.250.0130.05314.64
5.3.240.0100.05714.75
5.3.230.0100.05714.73
5.3.220.0130.05014.62
5.3.210.0230.04714.78
5.3.200.0170.05014.74
5.3.190.0300.04014.71
5.3.180.0300.04714.58
5.3.170.0300.04314.72
5.3.160.0070.06014.63
5.3.150.0230.04314.51
5.3.140.0170.05014.54
5.3.130.0170.05714.73
5.3.120.0270.05714.54
5.3.110.0030.06714.69
5.3.100.0100.06314.16
5.3.90.0130.06714.06
5.3.80.0170.05314.23
5.3.70.0200.04314.13
5.3.60.0130.06014.03
5.3.50.0230.06314.20
5.3.40.0200.04713.98
5.3.30.0230.04314.03
5.3.20.0130.05313.86
5.3.10.0170.06313.86
5.3.00.0130.05013.70
5.2.170.0130.04311.14
5.2.160.0170.03711.17
5.2.150.0170.04011.18
5.2.140.0130.04011.22
5.2.130.0170.03711.12
5.2.120.0070.04311.21
5.2.110.0170.03711.20
5.2.100.0100.04011.21
5.2.90.0130.04011.21
5.2.80.0100.04311.15
5.2.70.0100.04311.20
5.2.60.0130.04011.04
5.2.50.0130.04011.05
5.2.40.0070.05011.10
5.2.30.0200.03010.97
5.2.20.0130.04311.06
5.2.10.0070.04310.94
5.2.00.0100.04010.79
5.1.60.0030.04010.03
5.1.50.0170.03010.19
5.1.40.0030.04010.05
5.1.30.0200.02710.54
5.1.20.0200.03010.49
5.1.10.0200.02710.11
5.1.00.0130.03310.21
5.0.50.0100.0278.64
5.0.40.0070.0278.55
5.0.30.0070.0438.27
5.0.20.0030.0308.39
5.0.10.0100.0238.21
5.0.00.0100.0508.28
4.4.90.0030.0275.89
4.4.80.0000.0276.03
4.4.70.0030.0236.00
4.4.60.0100.0176.01
4.4.50.0070.0205.88
4.4.40.0070.0375.94
4.4.30.0000.0275.89
4.4.20.0070.0235.93
4.4.10.0070.0205.94
4.4.00.0030.0375.94
4.3.110.0070.0205.86
4.3.100.0000.0275.91
4.3.90.0070.0235.90
4.3.80.0030.0375.85
4.3.70.0000.0235.83
4.3.60.0070.0205.80
4.3.50.0070.0205.79
4.3.40.0100.0305.78
4.3.30.0030.0234.55
4.3.20.0070.0204.53
4.3.10.0000.0234.52
4.3.00.0070.0276.96

preferences:
17.88 ms | 401 KiB | 5 Q