3v4l.org

run code in 300+ PHP versions simultaneously
<?php // the unroll: $arr = array(1 => 'one', 2 => 'two', 3 => 'three'); $a = &$arr[1]; // first iteration var_dump($a,$arr); $a = &$arr[2]; var_dump($a,$arr); $a = &$arr[3]; var_dump($a,$arr); // 2nd unroll : following up with another foreach -- $a is still a reference for $arr[3] $a = $arr[1]; $a = $arr[2]; $a = $arr[3]; var_dump($a,$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)
8.3.60.0140.00418.18
8.3.50.0100.01221.21
8.3.40.0110.01118.79
8.3.30.0070.00720.20
8.3.20.0000.00720.22
8.3.10.0030.00621.09
8.3.00.0070.00022.37
8.2.180.0080.00818.29
8.2.170.0070.00722.96
8.2.160.0190.00022.33
8.2.150.0080.00024.18
8.2.140.0060.00324.66
8.2.130.0050.00226.16
8.2.120.0040.00420.67
8.2.110.0060.00320.23
8.2.100.0110.00017.72
8.2.90.0000.00819.18
8.2.80.0050.00317.97
8.2.70.0040.00417.50
8.2.60.0000.00817.93
8.2.50.0040.00418.07
8.2.40.0050.00318.13
8.2.30.0040.00419.48
8.2.20.0040.00417.55
8.2.10.0040.00417.55
8.2.00.0000.00817.71
8.1.280.0070.01425.92
8.1.270.0080.00023.99
8.1.260.0070.00026.35
8.1.250.0000.00828.09
8.1.240.0030.00622.09
8.1.230.0070.00417.46
8.1.220.0030.00617.74
8.1.210.0000.00818.77
8.1.200.0030.00617.23
8.1.190.0000.00917.51
8.1.180.0030.00618.10
8.1.170.0040.00418.51
8.1.160.0000.00818.81
8.1.150.0050.00218.50
8.1.140.0070.00017.33
8.1.130.0040.00417.29
8.1.120.0040.00417.31
8.1.110.0040.00417.26
8.1.100.0040.00417.28
8.1.90.0040.00417.38
8.1.80.0000.00717.25
8.1.70.0000.00717.35
8.1.60.0030.00617.51
8.1.50.0050.00317.50
8.1.40.0030.00617.47
8.1.30.0060.00317.54
8.1.20.0060.00317.57
8.1.10.0040.00417.50
8.1.00.0030.00517.32
8.0.300.0000.00718.77
8.0.290.0040.00416.58
8.0.280.0000.00718.29
8.0.270.0070.00017.06
8.0.260.0000.00718.53
8.0.250.0000.00716.88
8.0.240.0080.00016.75
8.0.230.0000.00716.86
8.0.220.0030.00316.82
8.0.210.0030.00316.82
8.0.200.0060.00016.79
8.0.190.0030.00516.92
8.0.180.0040.00416.73
8.0.170.0070.00016.88
8.0.160.0000.00716.80
8.0.150.0050.00316.68
8.0.140.0000.00816.68
8.0.130.0050.00013.22
8.0.120.0050.00316.81
8.0.110.0050.00316.80
8.0.100.0000.00716.64
8.0.90.0000.00716.71
8.0.80.0120.00416.86
8.0.70.0070.00016.71
8.0.60.0030.00516.64
8.0.50.0000.00716.77
8.0.30.0160.00317.06
8.0.20.0130.00817.40
8.0.10.0050.00217.05
8.0.00.0100.01416.87
7.4.330.0060.00015.04
7.4.320.0030.00316.57
7.4.300.0000.00716.33
7.4.290.0050.00316.45
7.4.280.0030.00316.52
7.4.270.0070.00016.51
7.4.260.0050.00013.23
7.4.250.0030.00516.38
7.4.240.0020.00516.49
7.4.230.0030.00316.34
7.4.220.0100.00616.54
7.4.210.0100.00716.48
7.4.200.0000.00716.61
7.4.190.0040.00416.59
7.4.160.0120.00416.54
7.4.150.0080.01217.40
7.4.140.0090.01017.86
7.4.130.0090.00916.41
7.4.120.0080.01016.53
7.4.110.0120.00916.40
7.4.100.0120.00616.36
7.4.90.0110.00916.30
7.4.80.0090.00919.39
7.4.70.0060.01216.35
7.4.60.0160.00716.32
7.4.50.0000.00816.59
7.4.40.0130.00322.77
7.4.30.0100.00716.35
7.4.00.0000.01815.10
7.3.330.0000.00513.11
7.3.320.0040.00412.94
7.3.310.0040.00416.23
7.3.300.0000.00716.08
7.3.290.0140.00016.36
7.3.280.0090.00916.23
7.3.270.0110.00617.40
7.3.260.0090.01418.24
7.3.250.0070.01116.57
7.3.240.0070.01016.22
7.3.230.0100.01016.46
7.3.210.0130.00616.04
7.3.200.0100.01019.39
7.3.190.0160.00616.41
7.3.180.0100.00716.44
7.3.170.0100.00816.27
7.3.160.0040.01216.61
7.3.120.0090.00614.95
7.2.330.0120.00616.71
7.2.320.0090.00916.79
7.2.310.0100.01016.24
7.2.300.0090.00916.32
7.2.290.0040.01216.30
7.2.60.0100.00316.46
7.2.00.0060.00619.45
7.1.200.0030.00315.73
7.1.100.0040.00718.02
7.1.70.0040.00417.07
7.1.60.0070.01419.17
7.1.50.0150.00716.98
7.1.00.0000.08022.30
7.0.200.0000.00816.43
7.0.140.0070.07022.15
7.0.100.0200.05019.91
7.0.90.0300.05019.95
7.0.80.0230.03719.86
7.0.70.0200.09019.84
7.0.60.0130.05019.98
7.0.50.0330.06720.29
7.0.40.0070.07320.07
7.0.30.0000.09020.14
7.0.20.0230.07320.18
7.0.10.0070.08319.99
7.0.00.0170.03720.04
5.6.280.0030.07320.89
5.6.250.0100.05320.73
5.6.240.0030.05320.71
5.6.230.0000.08720.59
5.6.220.0000.08720.71
5.6.210.0070.06720.63
5.6.200.0100.08321.02
5.6.190.0170.07321.07
5.6.180.0030.08721.08
5.6.170.0100.07321.07
5.6.160.0100.07021.02
5.6.150.0070.05721.02
5.6.140.0070.04721.00
5.6.130.0030.07021.10
5.6.120.0030.09021.05
5.6.110.0100.07321.12
5.6.100.0170.06321.02
5.6.90.0070.05321.05
5.6.80.0170.03720.46
5.6.70.0030.08320.32
5.6.60.0170.07020.31
5.6.50.0070.07320.41
5.6.40.0070.05320.45
5.6.30.0100.07720.53
5.6.20.0070.07320.42
5.6.10.0170.07020.43
5.6.00.0070.04720.30
5.5.380.0070.08020.45
5.5.370.0100.07720.38
5.5.360.0070.03720.37
5.5.350.0130.07020.45
5.5.340.0100.07720.81
5.5.330.0030.08720.81
5.5.320.0130.07720.91
5.5.310.0070.08020.64
5.5.300.0030.07720.63
5.5.290.0030.07320.75
5.5.280.0070.04020.77
5.5.270.0200.04020.91
5.5.260.0030.05320.78
5.5.250.0100.06320.54
5.5.240.0100.07320.08
5.5.230.0100.06720.27
5.5.220.0070.05720.19
5.5.210.0130.07720.25
5.5.200.0000.04720.25
5.5.190.0170.06720.15
5.5.180.0130.06720.14
5.5.160.0070.07320.12
5.5.150.0070.07320.17
5.5.140.0200.07720.18
5.5.130.0100.04320.25
5.5.120.0070.04020.21
5.5.110.0030.04020.17
5.5.100.0070.03720.16
5.5.90.0030.05019.94
5.5.80.0100.03320.04
5.5.70.0030.04019.93
5.5.60.0030.04020.05
5.5.50.0070.03719.93
5.5.40.0070.05019.91
5.5.30.0070.03720.01
5.5.20.0070.03720.02
5.5.10.0000.04020.00
5.5.00.0030.05020.02
5.4.450.0030.08319.40
5.4.440.0100.06019.36
5.4.430.0100.08019.30
5.4.420.0070.07719.38
5.4.410.0070.07719.34
5.4.400.0130.07018.92
5.4.390.0130.07319.12
5.4.380.0100.08018.98
5.4.370.0000.07719.06
5.4.360.0070.05719.03
5.4.350.0030.08018.94
5.4.340.0030.08019.10
5.4.320.0070.08018.85
5.4.310.0100.07018.98
5.4.300.0100.05318.78
5.4.290.0030.06019.09
5.4.280.0130.06718.90
5.4.270.0030.04019.14
5.4.260.0000.04018.99
5.4.250.0000.04019.14
5.4.240.0030.04319.02
5.4.230.0030.03719.03
5.4.220.0030.03718.96
5.4.210.0030.03719.11
5.4.200.0030.04019.09
5.4.190.0100.04718.99
5.4.180.0070.03318.97
5.4.170.0070.03018.77
5.4.160.0070.03319.10
5.4.150.0170.02719.05
5.4.140.0130.05316.28
5.4.130.0030.03716.27
5.4.120.0030.03716.00
5.4.110.0000.04016.23
5.4.100.0070.03716.28
5.4.90.0070.03316.26
5.4.80.0030.03716.20
5.4.70.0100.03016.21
5.4.60.0000.03716.19
5.4.50.0030.03716.40
5.4.40.0030.03716.24
5.4.30.0030.04016.18
5.4.20.0000.04016.21
5.4.10.0030.03716.31
5.4.00.0000.04015.77
5.3.290.0000.06314.52
5.3.280.0030.03714.43
5.3.270.0000.03714.59
5.3.260.0000.03714.47
5.3.250.0100.04314.44
5.3.240.0100.02714.61
5.3.230.0000.05014.45
5.3.220.0030.03714.42
5.3.210.0030.04014.56
5.3.200.0070.03314.42
5.3.190.0070.03314.57
5.3.180.0000.04014.42
5.3.170.0070.03714.38
5.3.160.0000.04014.54
5.3.150.0030.03314.39
5.3.140.0100.03014.57
5.3.130.0030.03714.40
5.3.120.0070.03714.54
5.3.110.0030.03714.40
5.3.100.0100.03713.90
5.3.90.0030.03313.98
5.3.80.0030.04714.01
5.3.70.0030.04013.97
5.3.60.0170.02313.99
5.3.50.0100.03013.71
5.3.40.0130.02713.93
5.3.30.0000.03713.89
5.3.20.0100.03713.44
5.3.10.0100.04313.42
5.3.00.0000.03713.54
5.2.170.0070.02311.63
5.2.160.0030.02711.63
5.2.150.0030.03011.63
5.2.140.0000.03011.63
5.2.130.0030.06011.63
5.2.120.0100.04711.63
5.2.110.0070.05311.63
5.2.100.0030.02711.63
5.2.90.0000.06311.63
5.2.80.0070.02311.63
5.2.70.0030.05311.63
5.2.60.0130.04311.63
5.2.50.0170.04711.63
5.2.40.0000.05011.63
5.2.30.0030.03711.63
5.2.20.0030.06311.63
5.2.10.0030.03711.63
5.2.00.0030.03011.63
5.1.60.0070.02711.63
5.1.50.0030.02311.63
5.1.40.0030.02711.63
5.1.30.0000.03011.63
5.1.20.0000.05711.63
5.1.10.0070.02711.63
5.1.00.0000.02711.63
5.0.50.0030.04711.63
5.0.40.0030.02311.63
5.0.30.0000.03311.63
5.0.20.0030.01711.63
5.0.10.0030.03011.63
5.0.00.0030.06311.63
4.4.90.0030.03311.63
4.4.80.0000.01711.63
4.4.70.0030.03311.63
4.4.60.0000.02711.63
4.4.50.0000.02711.63
4.4.40.0000.03011.63
4.4.30.0000.02011.63
4.4.20.0130.01711.63
4.4.10.0030.01311.63
4.4.00.0030.04711.63
4.3.110.0000.01711.63
4.3.100.0030.03311.63
4.3.90.0030.01311.63
4.3.80.0030.04711.63
4.3.70.0000.03711.63
4.3.60.0000.02311.63
4.3.50.0070.02711.63
4.3.40.0000.04311.63
4.3.30.0000.03711.63
4.3.20.0000.03311.63
4.3.10.0030.03011.63
4.3.00.0070.01711.63

preferences:
44.18 ms | 401 KiB | 5 Q