3v4l.org

run code in 300+ PHP versions simultaneously
<?php $params = [1,2,3]; function transform(array &$params) { $references = []; foreach ($params as &$value) { $references[] = &$value; } $value = "foo"; return $references; } var_dump($params); $p = transform($params); var_dump($p); debug_zval_dump($p, $params);

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)
8.3.60.0110.00416.50
8.3.50.0140.00722.05
8.3.40.0040.01118.84
8.3.30.0150.00618.71
8.3.20.0070.00320.29
8.3.10.0080.00023.65
8.3.00.0040.00419.13
8.2.180.0170.00718.16
8.2.170.0140.00322.96
8.2.160.0070.00722.05
8.2.150.0090.00024.18
8.2.140.0000.00724.66
8.2.130.0060.00319.36
8.2.120.0080.00026.35
8.2.110.0060.00320.20
8.2.100.0110.00017.85
8.2.90.0080.00018.34
8.2.80.0030.00517.97
8.2.70.0000.00817.50
8.2.60.0080.00017.93
8.2.50.0040.00418.07
8.2.40.0030.00519.32
8.2.30.0030.00620.69
8.2.20.0000.01117.82
8.2.10.0040.00418.12
8.2.00.0040.00418.11
8.1.280.0150.00325.92
8.1.270.0080.00022.16
8.1.260.0000.00728.09
8.1.250.0040.00428.09
8.1.240.0040.00422.05
8.1.230.0060.00620.89
8.1.220.0050.00317.74
8.1.210.0030.00518.77
8.1.200.0030.00617.35
8.1.190.0030.00517.23
8.1.180.0000.00818.10
8.1.170.0040.00418.66
8.1.160.0060.00321.93
8.1.150.0070.00018.99
8.1.140.0090.00019.49
8.1.130.0000.00717.61
8.1.120.0020.00517.45
8.1.110.0040.00417.43
8.1.100.0020.00517.49
8.1.90.0000.00717.52
8.1.80.0000.00717.43
8.1.70.0030.00317.27
8.1.60.0050.00317.56
8.1.50.0000.00917.50
8.1.40.0030.00617.51
8.1.30.0040.00417.72
8.1.20.0030.00517.59
8.1.10.0040.00417.52
8.1.00.0050.00317.50
8.0.300.0000.00720.07
8.0.290.0000.00716.88
8.0.280.0040.00418.45
8.0.270.0000.00817.14
8.0.260.0060.00017.26
8.0.250.0000.00717.02
8.0.240.0000.00616.92
8.0.230.0040.00417.01
8.0.220.0000.00817.01
8.0.210.0040.00417.00
8.0.200.0030.00317.00
8.0.190.0000.00716.93
8.0.180.0070.00017.00
8.0.170.0090.00016.88
8.0.160.0000.00717.03
8.0.150.0070.00016.91
8.0.140.0050.00516.89
8.0.130.0030.00313.34
8.0.120.0040.00417.03
8.0.110.0070.00016.86
8.0.100.0040.00416.95
8.0.90.0000.00817.02
8.0.80.0090.00617.00
8.0.70.0040.00416.83
8.0.60.0000.00817.01
8.0.50.0040.00416.91
8.0.30.0070.01617.08
8.0.20.0070.01417.40
8.0.10.0040.00416.94
8.0.00.0110.00916.75
7.4.330.0050.00016.71
7.4.320.0030.00316.46
7.4.300.0000.00616.52
7.4.290.0000.00816.63
7.4.280.0040.00416.55
7.4.270.0000.00716.59
7.4.260.0050.00216.52
7.4.250.0050.00316.58
7.4.240.0050.00216.53
7.4.230.0000.00716.41
7.4.220.0110.01116.45
7.4.210.0120.00616.52
7.4.200.0050.00216.63
7.4.160.0060.01516.50
7.4.150.0070.01117.40
7.4.140.0120.00517.86
7.4.130.0060.01216.55
7.4.120.0120.00516.55
7.4.110.0120.00916.51
7.4.100.0090.00916.53
7.4.90.0110.00716.41
7.4.80.0090.00919.39
7.4.70.0130.00516.34
7.4.60.0070.01416.32
7.4.50.0070.01016.37
7.4.40.0150.00816.59
7.4.30.0100.01016.72
7.4.00.0050.01115.19
7.3.330.0020.00213.22
7.3.320.0000.00513.35
7.3.310.0040.00416.43
7.3.300.0000.00716.38
7.3.290.0040.00316.38
7.3.280.0080.01216.33
7.3.270.0100.00717.40
7.3.260.0140.00316.41
7.3.250.0070.01016.44
7.3.240.0120.00616.52
7.3.230.0030.01316.59
7.3.210.0100.00816.41
7.3.200.0130.01016.32
7.3.190.0100.00616.63
7.3.180.0100.00716.32
7.3.170.0030.01516.64
7.3.160.0060.01016.41
7.3.120.0070.01115.07
7.3.110.0090.00914.65
7.3.100.0070.01014.94
7.3.90.0070.00714.88
7.3.80.0070.00715.15
7.3.70.0070.00714.77
7.3.60.0060.00914.78
7.3.50.0090.00314.93
7.3.40.0040.01114.82
7.3.30.0030.01014.90
7.3.20.0040.00716.86
7.3.10.0070.00716.84
7.3.00.0000.01116.64
7.2.330.0040.01416.86
7.2.320.0040.01916.54
7.2.310.0070.01016.68
7.2.300.0120.00616.81
7.2.290.0110.01116.74
7.2.250.0110.00714.86
7.2.240.0070.01315.28
7.2.230.0120.00315.04
7.2.220.0100.00315.03
7.2.210.0080.00815.00
7.2.200.0040.01114.90
7.2.190.0110.00615.22
7.2.180.0060.00914.86
7.2.170.0070.00714.80
7.2.60.0070.00716.98
7.2.00.0030.01319.36
7.1.330.0040.01115.79
7.1.320.0040.01115.86
7.1.310.0070.00315.73
7.1.300.0030.00915.71
7.1.290.0030.00715.80
7.1.280.0000.01015.66
7.1.270.0060.00315.80
7.1.260.0000.00815.68
7.1.200.0000.01215.77
7.1.100.0070.00717.85
7.1.70.0000.00816.91
7.1.60.0140.01019.48
7.1.50.0240.01734.82
7.1.00.0100.07022.55
7.0.200.0070.00714.68
7.0.60.0070.05720.04
7.0.50.0170.07017.91
7.0.40.0070.04020.24
7.0.30.0130.04720.06
7.0.20.0270.07720.32
7.0.10.0130.07320.10
7.0.00.0070.08020.08
5.6.280.0100.05321.02
5.6.210.0100.07720.45
5.6.200.0130.03718.16
5.6.190.0030.04720.61
5.6.180.0600.05320.77
5.6.170.0200.07720.46
5.6.160.0100.03720.55
5.6.150.0030.04318.16
5.6.140.0070.07718.28
5.6.130.0030.07318.18
5.6.120.0070.08321.12
5.6.110.0070.04320.96
5.6.100.0070.08321.13
5.6.90.0070.08320.97
5.6.80.0170.07720.44
5.5.350.3500.03320.32
5.5.340.0070.03717.96
5.5.330.0070.04320.13
5.5.320.0230.04720.36
5.5.310.0270.08020.41
5.5.300.0070.03717.95
5.5.290.0070.06017.99
5.5.280.0030.09020.89
5.5.270.0030.08720.88
5.5.260.0170.06020.88
5.5.250.0130.07320.61
5.5.240.0130.03020.23

preferences:
51.62 ms | 401 KiB | 5 Q