3v4l.org

run code in 300+ PHP versions simultaneously
<?php $lost = array("A","B","C","D"); $list = $lost; # cow-count2 // $list = &$lost; # refcount2 // $list = $lost; unset($lost); # just like just assigned but assigned and unset original. $list = (array) $lost; foreach ( $list as $var ) { printf("%s (%s)\n", item($list), $var); } function item(&$list) { return current($list); } ?>

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)
8.3.60.0040.01418.31
8.3.50.0080.00922.06
8.3.40.0140.00018.68
8.3.30.0100.00319.00
8.3.20.0030.00920.21
8.3.10.0130.00622.10
8.3.00.0000.00822.39
8.2.180.0110.00716.63
8.2.170.0090.00622.96
8.2.160.0070.00720.81
8.2.150.0040.00424.18
8.2.140.0050.00524.66
8.2.130.0070.01126.16
8.2.120.0080.00019.00
8.2.110.0090.00022.19
8.2.100.0090.00319.57
8.2.90.0050.00318.93
8.2.80.0040.00419.66
8.2.70.0060.00617.50
8.2.60.0030.00518.04
8.2.50.0000.00818.07
8.2.40.0080.00018.09
8.2.30.0040.00418.09
8.2.20.0000.00717.63
8.2.10.0050.00217.74
8.2.00.0000.00717.61
8.1.280.0070.00725.92
8.1.270.0120.00623.91
8.1.260.0050.00326.35
8.1.250.0000.00828.09
8.1.240.0030.00623.81
8.1.230.0070.00419.17
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0040.00417.23
8.1.190.0040.00417.52
8.1.180.0050.00318.10
8.1.170.0040.00418.47
8.1.160.0040.00422.05
8.1.150.0030.00620.48
8.1.140.0000.00717.44
8.1.130.0040.00417.93
8.1.120.0000.00717.48
8.1.110.0000.00717.36
8.1.100.0080.00017.45
8.1.90.0000.00717.36
8.1.80.0030.00517.36
8.1.70.0070.00017.41
8.1.60.0090.00017.55
8.1.50.0070.00017.55
8.1.40.0030.00617.54
8.1.30.0040.00417.67
8.1.20.0000.00817.66
8.1.10.0050.00217.43
8.1.00.0040.00417.39
8.0.300.0000.00718.77
8.0.290.0000.00717.18
8.0.280.0030.00318.36
8.0.270.0030.00317.26
8.0.260.0030.00316.72
8.0.250.0030.00316.84
8.0.240.0070.00016.94
8.0.230.0030.00316.87
8.0.220.0000.00716.85
8.0.210.0000.00716.87
8.0.200.0000.00716.83
8.0.190.0040.00416.93
8.0.180.0040.00416.91
8.0.170.0040.00416.90
8.0.160.0030.00616.82
8.0.150.0070.00016.87
8.0.140.0000.00816.88
8.0.130.0030.00313.27
8.0.120.0040.00416.81
8.0.110.0070.00016.70
8.0.100.0000.00716.83
8.0.90.0050.00216.88
8.0.80.0090.00916.80
8.0.70.0020.00516.89
8.0.60.0040.00416.89
8.0.50.0040.00416.92
8.0.30.0110.00817.06
8.0.20.0080.01217.40
8.0.10.0030.00517.05
8.0.00.0050.01216.75
7.4.330.0050.00015.09
7.4.320.0060.00016.55
7.4.300.0030.00316.52
7.4.290.0080.00016.61
7.4.280.0000.00816.54
7.4.270.0110.00016.57
7.4.260.0000.00716.52
7.4.250.0050.00216.55
7.4.240.0020.00516.46
7.4.230.0030.00316.66
7.4.220.0110.00716.61
7.4.210.0050.01116.58
7.4.200.0000.00716.35
7.4.190.0030.00316.60
7.4.160.0140.00316.39
7.4.150.0090.00917.40
7.4.140.0170.01817.86
7.4.130.0110.01016.52
7.4.120.0030.01316.49
7.4.110.0080.01516.40
7.4.100.0140.00316.70
7.4.90.0140.00316.59
7.4.80.0070.01119.39
7.4.70.0060.01016.42
7.4.60.0110.00816.42
7.4.50.0030.00616.31
7.4.40.0040.01222.77
7.4.30.0140.00316.46
7.4.00.0060.01115.13
7.3.330.0030.00313.29
7.3.320.0030.00313.38
7.3.310.0000.00716.26
7.3.300.0070.00016.25
7.3.290.0070.01016.41
7.3.280.0110.01016.34
7.3.270.0030.01717.40
7.3.260.0140.00816.61
7.3.250.0110.00616.34
7.3.240.0130.00316.27
7.3.230.0110.00716.61
7.3.210.0070.01016.44
7.3.200.0110.00619.39
7.3.190.0100.01016.67
7.3.180.0120.00616.18
7.3.170.0120.00916.64
7.3.160.0130.00316.41
7.3.120.0020.00814.97
7.3.110.0040.01114.70
7.3.100.0040.01114.53
7.3.90.0000.01714.86
7.3.80.0100.00014.80
7.3.70.0000.00914.95
7.3.60.0110.00414.75
7.3.50.0060.00914.71
7.3.40.0070.00314.66
7.3.30.0030.00914.61
7.3.20.0090.00616.73
7.3.10.0080.00516.25
7.3.00.0060.00916.51
7.2.330.0140.00416.73
7.2.320.0090.00916.42
7.2.310.0030.01316.84
7.2.300.0110.00616.54
7.2.290.0030.01416.61
7.2.250.0090.00914.98
7.2.240.0090.00915.05
7.2.230.0030.01614.96
7.2.220.0030.00614.93
7.2.210.0040.01114.82
7.2.200.0060.00614.66
7.2.190.0030.01414.71
7.2.180.0070.01014.70
7.2.170.0070.00415.01
7.2.130.0110.01116.16
7.2.120.0100.01016.39
7.2.110.0100.01516.69
7.2.100.0040.01216.51
7.2.90.0180.00416.72
7.2.80.0050.01016.73
7.2.70.0090.00916.54
7.2.60.0090.00716.83
7.2.50.0130.00716.78
7.2.40.0170.00316.87
7.2.30.0080.00816.82
7.2.20.0140.00416.72
7.2.10.0070.00716.58
7.2.00.0080.00618.16
7.1.330.0070.01015.86
7.1.320.0070.00715.64
7.1.310.0030.01015.72
7.1.300.0070.00315.44
7.1.290.0110.00315.50
7.1.280.0040.00715.68
7.1.270.0070.00715.83
7.1.260.0030.01015.52
7.1.250.0060.00515.46
7.1.200.0090.00315.76
7.1.100.0070.00718.25
7.1.70.0040.00417.19
7.1.60.0100.01419.82
7.1.50.0090.01316.94
7.1.00.0070.07322.36
7.0.200.0080.00316.78
7.0.140.0030.07321.97
7.0.100.0100.05019.87
7.0.90.0100.07019.93
7.0.80.0230.08019.83
7.0.70.0300.07719.96
7.0.60.0230.05719.87
7.0.50.0300.04320.38
7.0.40.0100.03720.09
7.0.30.0170.07720.14
7.0.20.0100.07320.09
7.0.10.0000.09020.12
7.0.00.0070.05720.14
5.6.280.0070.07021.11
5.6.250.0170.07720.52
5.6.240.0030.05320.65
5.6.230.0130.07320.45
5.6.220.0070.07720.44
5.6.210.0130.04720.44
5.6.200.0030.08720.96
5.6.190.0100.08320.95
5.6.180.0070.07321.05
5.6.170.0100.07720.95
5.6.160.0200.07321.02
5.6.150.0030.05721.04
5.6.140.0100.07321.04
5.6.130.0000.07721.05
5.6.120.0100.08021.07
5.6.110.0100.07021.06
5.6.100.0000.05321.09
5.6.90.0070.08021.00
5.6.80.0030.05320.50
5.6.70.0070.04020.38
5.6.60.0030.07320.40
5.6.50.0070.06320.34
5.6.40.0100.07720.29
5.6.30.0170.07020.41
5.6.20.0070.08020.36
5.6.10.0030.08020.32
5.6.00.0130.07320.42
5.5.380.0030.05720.39
5.5.370.0130.08020.32
5.5.360.0030.09020.36
5.5.350.0070.06720.37
5.5.340.0100.08020.89
5.5.330.0030.04320.86
5.5.320.0070.08320.65
5.5.310.0100.06720.64
5.5.300.0030.09020.89
5.5.290.0130.04020.85
5.5.280.0100.07020.64
5.5.270.0070.08720.92
5.5.260.0170.07320.64
5.5.250.0170.06720.64
5.5.240.0070.07020.16
5.5.230.0030.07720.26
5.5.220.0030.08020.15
5.5.210.0100.07320.24
5.5.200.0070.04320.27
5.5.190.0030.08319.98
5.5.180.0030.08020.09
5.5.160.0100.06720.07
5.5.150.0130.07020.13
5.5.140.0130.03720.26
5.5.130.0030.08019.99
5.5.120.0070.04320.12
5.5.110.0270.06019.98
5.5.100.0170.07320.10
5.5.90.0030.06320.10
5.5.80.0230.06320.08
5.5.70.0070.08020.16
5.5.60.0070.04320.16
5.5.50.0000.06720.11
5.5.40.0070.05720.05
5.5.30.0070.06320.11
5.5.20.0170.06320.13
5.5.10.0070.04719.98
5.5.00.0070.07320.12
5.4.450.0100.07719.42
5.4.440.0070.07719.46
5.4.430.0130.07719.22
5.4.420.0000.06019.36
5.4.410.0070.04319.32
5.4.400.0130.06719.13
5.4.390.0070.03719.16
5.4.380.0070.04318.91
5.4.370.0070.04319.18
5.4.360.0070.04018.90
5.4.350.0100.07318.90
5.4.340.0030.06319.14
5.4.320.0070.08019.12
5.4.310.0170.06719.13
5.4.300.0070.07719.18
5.4.290.0030.06318.84
5.4.280.0100.04019.09
5.4.270.0070.06019.19
5.4.260.0070.03718.90
5.4.250.0070.04019.13
5.4.240.0070.07319.18
5.4.230.0100.07719.22
5.4.220.0070.06719.13
5.4.210.0070.05319.04
5.4.200.0070.04319.11
5.4.190.0030.06319.02
5.4.180.0070.07319.11
5.4.170.0030.07719.08
5.4.160.0030.07719.04
5.4.150.0100.07319.03
5.4.140.0030.06716.36
5.4.130.0030.07716.36
5.4.120.0100.06016.13
5.4.110.0100.04016.39
5.4.100.0100.05316.39
5.4.90.0130.05316.47
5.4.80.0100.04716.41
5.4.70.0070.07316.34
5.4.60.0000.04716.32
5.4.50.0070.03316.41
5.4.40.0100.07016.39
5.4.30.0070.06016.43
5.4.20.0030.06016.47
5.4.10.0170.05316.40
5.4.00.0030.07315.71
5.3.290.0100.07714.78
5.3.280.0130.06714.73
5.3.270.0100.07314.66
5.3.260.0100.07014.58
5.3.250.0170.03314.63
5.3.240.0030.07314.62
5.3.230.0030.08014.68
5.3.220.0100.06714.54
5.3.210.0030.05014.53
5.3.200.0070.08014.52
5.3.190.0000.08014.62
5.3.180.0030.07014.61
5.3.170.0170.05014.54
5.3.160.0070.07314.55
5.3.150.0070.07314.66
5.3.140.0100.05314.61
5.3.130.0100.07314.52
5.3.120.0100.04014.57
5.3.110.0070.03714.69
5.3.100.0100.04013.95
5.3.90.0030.04714.14
5.3.80.0030.03314.00
5.3.70.0100.03714.14
5.3.60.0000.04014.05
5.3.50.0000.04013.84
5.3.40.0070.03714.01
5.3.30.0030.04714.02
5.3.20.0170.02013.59
5.3.10.0070.03313.76
5.3.00.0030.03713.61
5.2.170.0000.03011.19
5.2.160.0000.03011.25
5.2.150.0000.04711.07
5.2.140.0000.03011.20
5.2.130.0000.03011.11
5.2.120.0030.02711.09
5.2.110.0000.03311.11
5.2.100.0070.02011.16
5.2.90.0030.02710.99
5.2.80.0000.04710.98
5.2.70.0070.02010.95
5.2.60.0000.03011.12
5.2.50.0130.02311.09
5.2.40.0000.02711.06
5.2.30.0000.03010.86
5.2.20.0000.03311.02
5.2.10.0100.03010.76
5.2.00.0030.02710.85
5.1.60.0030.02310.07
5.1.50.0070.04310.10
5.1.40.0030.02310.00
5.1.30.0030.02710.39
5.1.20.0000.02710.30
5.1.10.0030.03310.13
5.1.00.0000.02710.15
5.0.50.0000.0209.49
5.0.40.0000.0209.49
5.0.30.0000.0309.49
5.0.20.0000.0209.49
5.0.10.0000.0209.49
5.0.00.0030.0339.49
4.4.90.0000.0139.49
4.4.80.0000.0209.49
4.4.70.0000.0209.49
4.4.60.0030.0139.49
4.4.50.0000.0179.49
4.4.40.0000.0279.49
4.4.30.0000.0239.49
4.4.20.0000.0179.49
4.4.10.0000.0179.49
4.4.00.0000.0279.49
4.3.110.0000.0179.49
4.3.100.0000.0179.49
4.3.90.0000.0179.49
4.3.80.0030.0239.49
4.3.70.0070.0109.49
4.3.60.0030.0139.49
4.3.50.0000.0179.49
4.3.40.0070.0209.49
4.3.30.0000.0179.49
4.3.20.0000.0209.49
4.3.10.0000.0139.49
4.3.00.0000.0139.49

preferences:
72.68 ms | 401 KiB | 5 Q