3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['first','second','third']; // touch refcount $b = &$a; foreach($a as $v) { echo 'Running ', $v, "\n\n"; unset($a[1]); var_dump($a); } echo 'final:', "\n"; var_dump($a);

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)
8.3.60.0160.00616.75
8.3.50.0150.00721.17
8.3.40.0090.00618.73
8.3.30.0060.00918.67
8.3.20.0040.01120.29
8.3.10.0030.00521.65
8.3.00.0000.00823.30
8.2.180.0070.01018.17
8.2.170.0160.00322.96
8.2.160.0140.00020.28
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0050.00319.82
8.2.120.0040.00426.35
8.2.110.0030.00620.32
8.2.100.0140.00317.78
8.2.90.0000.00819.17
8.2.80.0000.00817.97
8.2.70.0100.00017.63
8.2.60.0000.00818.05
8.2.50.0060.00318.07
8.2.40.0080.00020.59
8.2.30.0040.00419.54
8.2.20.0040.00417.69
8.2.10.0030.00518.05
8.2.00.0000.00818.06
8.1.280.0080.00825.92
8.1.270.0040.01123.79
8.1.260.0040.00428.09
8.1.250.0050.00328.09
8.1.240.0100.00023.88
8.1.230.0000.01120.71
8.1.220.0040.00417.74
8.1.210.0050.00318.77
8.1.200.0060.00317.35
8.1.190.0000.00919.01
8.1.180.0030.00518.10
8.1.170.0080.00018.64
8.1.160.0040.00420.70
8.1.150.0040.00418.93
8.1.140.0050.00319.55
8.1.130.0040.00417.71
8.1.120.0070.00017.48
8.1.110.0000.00717.39
8.1.100.0000.00717.42
8.1.90.0000.00817.43
8.1.80.0050.00217.35
8.1.70.0000.00717.42
8.1.60.0050.00317.58
8.1.50.0060.00317.54
8.1.40.0030.00517.40
8.1.30.0100.00017.64
8.1.20.0000.00817.66
8.1.10.0080.00017.50
8.1.00.0000.00817.35
8.0.300.0070.00018.77
8.0.290.0040.00416.63
8.0.280.0080.00018.46
8.0.270.0050.00217.39
8.0.260.0000.00717.27
8.0.250.0040.00416.96
8.0.240.0070.00017.00
8.0.230.0000.00716.91
8.0.220.0040.00416.93
8.0.210.0040.00416.79
8.0.200.0080.00016.98
8.0.190.0040.00416.89
8.0.180.0050.00716.94
8.0.170.0060.00316.81
8.0.160.0000.00716.86
8.0.150.0070.00016.89
8.0.140.0050.00216.87
8.0.130.0050.00013.25
8.0.120.0030.00616.87
8.0.110.0070.00016.80
8.0.100.0000.00716.87
8.0.90.0030.00516.96
8.0.80.0100.00716.95
8.0.70.0000.00916.95
8.0.60.0000.00716.98
8.0.50.0000.00716.84
8.0.30.0080.01217.12
8.0.20.0130.00617.40
8.0.10.0020.00516.99
8.0.00.0090.01016.84
7.4.330.0000.00516.70
7.4.320.0000.00616.58
7.4.300.0000.00816.57
7.4.290.0040.00416.49
7.4.280.0000.00916.51
7.4.270.0000.00716.58
7.4.260.0030.00516.64
7.4.250.0000.00716.33
7.4.240.0020.00616.58
7.4.230.0040.00416.30
7.4.220.0090.01016.51
7.4.210.0100.00616.59
7.4.200.0040.00416.63
7.4.160.0170.00016.41
7.4.150.0120.00617.40
7.4.140.0100.01117.86
7.4.130.0160.00816.52
7.4.120.0150.00216.48
7.4.110.0130.01316.50
7.4.100.0090.00916.55
7.4.90.0140.00316.30
7.4.80.0130.00919.39
7.4.70.0140.00316.59
7.4.60.0060.00916.46
7.4.50.0030.01216.48
7.4.40.0070.01416.54
7.4.30.0070.01016.60
7.4.00.0020.00914.89
7.3.330.0000.00513.00
7.3.320.0030.00313.07
7.3.310.0040.00316.24
7.3.300.0000.00616.31
7.3.290.0000.00716.33
7.3.280.0050.01216.27
7.3.270.0130.00617.40
7.3.260.0060.01116.51
7.3.250.0120.00916.36
7.3.240.0100.00916.44
7.3.230.0070.01016.39
7.3.210.0030.01816.25
7.3.200.0110.00919.39
7.3.190.0140.00416.36
7.3.180.0120.00616.48
7.3.170.0070.01416.50
7.3.160.0070.01016.23
7.3.120.0080.00814.65
7.3.110.0080.01014.68
7.3.100.0050.01314.82
7.3.90.0030.01314.68
7.3.80.0020.01114.86
7.3.70.0010.00914.75
7.3.60.0100.00414.96
7.3.50.0040.01114.85
7.3.40.0000.00914.76
7.3.30.0100.00114.67
7.3.20.0090.00516.63
7.3.10.0100.00516.60
7.3.00.0060.00716.68
7.2.330.0190.00016.60
7.2.320.0140.00316.34
7.2.310.0170.00316.77
7.2.300.0030.01416.64
7.2.290.0090.00616.67
7.2.250.0130.00515.11
7.2.240.0040.01415.08
7.2.230.0070.00815.18
7.2.220.0050.00915.22
7.2.210.0050.01114.84
7.2.200.0050.00914.94
7.2.190.0010.01214.74
7.2.180.0090.00915.02
7.2.170.0030.00914.89
7.2.160.0000.01414.99
7.2.150.0030.01116.95
7.2.140.0090.00916.96
7.2.130.0000.01116.88
7.2.120.0130.00317.06
7.2.110.0120.00016.81
7.2.100.0060.01016.77
7.2.90.0040.01116.93
7.2.80.0090.00617.10
7.2.70.0070.01116.91
7.2.60.0020.01416.91
7.2.50.0090.00616.57
7.2.40.0060.00616.87
7.2.30.0000.01016.90
7.2.20.0090.00316.93
7.2.10.0060.00316.93
7.2.00.0050.00918.21
7.1.330.0110.00515.88
7.1.320.0050.00715.88
7.1.310.0090.00515.75
7.1.300.0040.01115.60
7.1.290.0070.00615.81
7.1.280.0060.00515.96
7.1.270.0020.01215.78
7.1.260.0060.00615.69
7.1.250.0100.00315.87
7.1.200.0090.00315.67
7.1.100.0110.00818.21
7.1.70.0000.00916.93
7.1.60.0180.00719.12
7.1.50.0040.00717.07
7.1.00.0000.08022.36
7.0.200.0960.00314.97
7.0.60.0170.08021.68
7.0.50.0030.06017.66
7.0.40.0030.08320.24
7.0.30.0230.04720.30
7.0.20.0230.08020.16
7.0.10.0030.04320.34
7.0.00.0100.06320.16
5.6.280.0000.05020.78
5.6.210.0070.06720.62
5.6.200.0130.05018.22
5.6.190.0170.07720.68
5.6.180.0400.07020.46
5.6.170.0330.07320.40
5.6.160.0100.08020.48
5.6.150.0070.06318.15
5.6.140.0200.07018.11
5.6.130.0100.08018.07
5.6.120.0100.08321.02
5.6.110.0100.07021.04
5.6.100.0100.07721.00
5.6.90.0130.05020.96
5.6.80.0030.05720.28
5.5.350.0170.03320.43
5.5.340.0070.07717.99
5.5.330.0100.04720.37
5.5.320.0470.05020.18
5.5.310.0200.03720.34
5.5.300.0030.04318.00
5.5.290.0100.06317.95
5.5.280.0100.08020.64
5.5.270.0030.04720.71
5.5.260.0170.07320.67
5.5.250.0000.06020.43
5.5.240.0070.08320.07

preferences:
57.99 ms | 401 KiB | 5 Q