3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = ['one', 'two', 'three', 'four', 'five']; echo 'foreach on $arr' . PHP_EOL; foreach($arr as $elem) { var_dump(current($arr)); } echo 'foreach on $refArr' . PHP_EOL; $refArr = &$arr; foreach($refArr as $elem) { var_dump(current($arr)); } echo 'substituting array during iteration' . PHP_EOL; $refArr = &$arr; foreach($refArr as $elem) { if ($elem == 'three') { $arr = [1, 2, 3, 4, 5]; } echo $elem . PHP_EOL; }

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)
8.3.60.0000.01418.43
8.3.50.0140.00821.08
8.3.40.0110.00418.71
8.3.30.0140.00318.80
8.3.20.0000.00820.20
8.3.10.0030.00623.59
8.3.00.0030.00623.65
8.2.180.0100.01018.16
8.2.170.0070.00722.96
8.2.160.0070.00721.97
8.2.150.0040.00424.18
8.2.140.0000.00724.66
8.2.130.0040.00426.16
8.2.120.0060.00317.63
8.2.110.0080.00321.09
8.2.100.0040.00717.61
8.2.90.0040.00419.22
8.2.80.0050.00318.05
8.2.70.0080.00017.50
8.2.60.0080.00017.63
8.2.50.0000.00817.55
8.2.40.0080.00019.23
8.2.30.0070.00318.07
8.2.20.0000.00717.63
8.2.10.0000.00818.06
8.2.00.0080.00018.00
8.1.280.0100.00725.92
8.1.270.0050.00320.38
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0090.00322.18
8.1.230.0040.00820.94
8.1.220.0030.00517.77
8.1.210.0040.00418.77
8.1.200.0030.00517.22
8.1.190.0000.00817.55
8.1.180.0000.00818.10
8.1.170.0000.00919.02
8.1.160.0050.00221.93
8.1.150.0050.00318.77
8.1.140.0000.00817.51
8.1.130.0070.00017.74
8.1.120.0050.00317.36
8.1.110.0040.00417.47
8.1.100.0000.00717.45
8.1.90.0000.01017.48
8.1.80.0040.00417.50
8.1.70.0000.00717.44
8.1.60.0000.00817.52
8.1.50.0030.00517.57
8.1.40.0030.00517.39
8.1.30.0040.00417.50
8.1.20.0020.00517.55
8.1.10.0040.00417.52
8.1.00.0080.00017.31
8.0.300.0050.00318.77
8.0.290.0040.00416.63
8.0.280.0000.00718.37
8.0.270.0000.00617.18
8.0.260.0030.00317.27
8.0.250.0000.00716.98
8.0.240.0000.00616.79
8.0.230.0000.00717.00
8.0.220.0030.00316.88
8.0.210.0040.00416.80
8.0.200.0000.00716.95
8.0.190.0050.00216.97
8.0.180.0070.00016.93
8.0.170.0040.00416.81
8.0.160.0040.00416.99
8.0.150.0030.00516.92
8.0.140.0000.00816.87
8.0.130.0050.00313.28
8.0.120.0000.00816.91
8.0.110.0000.00816.81
8.0.100.0040.00416.89
8.0.90.0050.00216.82
8.0.80.0110.00416.90
8.0.70.0040.00416.89
8.0.60.0040.00416.79
8.0.50.0000.00816.86
8.0.30.0120.00717.04
8.0.20.0130.00617.40
8.0.10.0040.00416.95
8.0.00.0080.01016.82
7.4.330.0020.00215.08
7.4.320.0040.00416.63
7.4.300.0000.00716.61
7.4.290.0000.00716.61
7.4.280.0040.00416.46
7.4.270.0000.00616.61
7.4.260.0030.00316.60
7.4.250.0000.00716.45
7.4.240.0040.00416.62
7.4.230.0000.00716.48
7.4.220.0120.00916.54
7.4.210.0090.00616.40
7.4.200.0030.00316.51
7.4.160.0130.00716.43
7.4.150.0120.00617.40
7.4.140.0160.00617.86
7.4.130.0080.01116.52
7.4.120.0110.00816.59
7.4.110.0090.00916.49
7.4.100.0150.00316.44
7.4.90.0150.00316.40
7.4.80.0120.00619.39
7.4.70.0120.00416.45
7.4.60.0100.01316.58
7.4.50.0000.00516.38
7.4.40.0080.00816.31
7.4.30.0060.01616.55
7.4.00.0090.00614.89
7.3.330.0030.00313.20
7.3.320.0000.00513.00
7.3.310.0000.00716.32
7.3.300.0070.00016.22
7.3.290.0060.00816.30
7.3.280.0100.00916.29
7.3.270.0030.01417.40
7.3.260.0100.01016.39
7.3.250.0110.00716.37
7.3.240.0150.00416.46
7.3.230.0100.01016.39
7.3.210.0110.00716.35
7.3.200.0120.00516.36
7.3.190.0060.01116.29
7.3.180.0120.00416.31
7.3.170.0090.01216.65
7.3.160.0130.00716.57
7.2.330.0070.01416.65
7.2.320.0070.01016.52
7.2.310.0090.00916.58
7.2.300.0140.00316.72
7.2.290.0040.01616.66
7.2.60.0120.00316.74
7.2.00.0100.00319.48
7.1.200.0140.00315.86
7.1.100.0060.00618.06
7.1.70.0050.00217.15
7.1.60.0100.01619.42
7.1.50.0060.01616.94
7.1.00.0000.07322.47
7.0.200.0090.00616.88
7.0.60.0000.09319.87
7.0.50.0070.08317.87
7.0.40.0070.04720.23
7.0.30.0330.07720.21
7.0.20.0100.06020.02
7.0.10.0030.04320.19
7.0.00.0130.08020.13
5.6.280.0000.03321.09
5.6.210.0100.06320.69
5.6.200.0000.05318.12
5.6.190.0100.08020.41
5.6.180.0370.08020.27
5.6.170.0370.05720.52
5.6.160.0030.07720.33
5.6.150.0070.05718.21
5.6.140.0070.04318.07
5.6.130.0170.07718.15
5.6.120.0000.05321.03
5.6.110.0130.08021.14
5.6.100.0130.07321.13
5.6.90.0100.04720.95
5.6.80.0070.07720.51
5.5.350.0270.05320.43
5.5.340.0030.03717.88
5.5.330.0100.05020.47
5.5.320.0270.06720.50
5.5.310.0200.07720.23
5.5.300.0100.03717.91
5.5.290.0000.04317.95
5.5.280.0100.07320.87
5.5.270.0070.03720.74
5.5.260.0070.08020.64
5.5.250.0000.04720.57
5.5.240.0000.04020.28
5.4.450.0600.05319.34
5.4.440.0170.05319.41
5.4.430.0130.05319.33
5.4.420.0100.06319.31
5.4.410.0230.05019.34
5.4.400.0330.04019.09
5.4.390.0100.06019.16
5.4.380.0200.04719.15
5.4.370.0300.04019.19
5.4.360.0170.05719.22
5.4.350.0170.05719.29
5.4.340.0370.04018.80
5.4.320.0200.05319.22
5.4.310.0130.05719.18
5.4.300.0300.05319.09
5.4.290.0230.04719.22
5.4.280.0200.05319.08
5.4.270.0200.05719.18
5.4.260.0130.05718.80
5.4.250.0170.05318.77
5.4.240.0330.04019.14
5.4.230.0130.05319.15
5.4.220.0200.05018.77
5.4.210.0230.04719.22
5.4.200.0200.04716.75
5.4.190.0200.05318.93
5.4.180.0270.04318.96
5.4.170.0230.05019.07
5.4.160.0170.05318.95
5.4.150.0230.04718.95
5.4.140.0230.04716.27
5.4.130.0230.04316.28
5.4.120.0170.05016.38
5.4.110.0170.04716.27
5.4.100.0200.05016.38
5.4.90.0230.04716.50
5.4.80.0200.04016.29
5.4.70.0130.05016.41
5.4.60.0130.04716.31
5.4.50.0070.05716.51
5.4.40.0200.05016.33
5.4.30.0130.05316.21
5.4.20.0100.05716.23
5.4.10.0230.04016.23
5.4.00.0270.04015.90
5.3.290.0230.04714.53
5.3.280.0170.05714.43
5.3.270.0130.05314.55
5.3.260.0030.06314.55
5.3.250.0030.06714.54
5.3.240.0130.05014.48
5.3.230.0200.05314.44
5.3.220.0070.06014.52
5.3.210.0270.04714.66
5.3.200.0200.05014.41
5.3.190.0300.04014.41
5.3.180.0130.05314.52
5.3.170.0170.06014.54
5.3.160.0300.04314.37
5.3.150.0130.05714.40
5.3.140.0270.05014.50
5.3.130.0270.04714.57
5.3.120.0200.05014.57
5.3.110.0200.05014.39
5.3.100.0130.05713.88
5.3.90.0200.05013.86
5.3.80.0130.05714.11
5.3.70.0130.05713.96
5.3.60.0230.04713.88
5.3.50.0200.06713.92
5.3.40.0130.05313.74
5.3.30.0230.04313.79
5.3.20.0100.05713.80
5.3.10.0270.04013.59
5.3.00.0230.04713.48
5.2.170.0170.04011.18
5.2.160.0200.03311.22
5.2.150.0170.03711.16
5.2.140.0170.04710.99
5.2.130.0230.04710.95
5.2.120.0130.03710.94
5.2.110.0100.04310.93
5.2.100.0030.04711.08
5.2.90.0100.04010.90
5.2.80.0100.04711.24
5.2.70.0070.05011.27
5.2.60.0030.05310.92
5.2.50.0130.04010.95
5.2.40.0130.03710.80
5.2.30.0070.04310.81
5.2.20.0030.04310.75
5.2.10.0100.04010.82
5.2.00.0070.04310.63
5.1.60.0100.0379.91
5.1.50.0030.04010.00
5.1.40.0100.0439.85
5.1.30.0130.03710.25
5.1.20.0100.04010.39
5.1.10.0130.03710.08
5.1.00.0170.0309.93
5.0.50.0070.0308.46
5.0.40.0070.0308.27
5.0.30.0100.0378.23
5.0.20.0030.0338.17
5.0.10.0070.0278.04
5.0.00.0030.0438.13
4.4.90.0130.0175.77
4.4.80.0070.0235.79
4.4.70.0100.0175.74
4.4.60.0070.0205.86
4.4.50.0100.0175.82
4.4.40.0030.0405.86
4.4.30.0030.0235.82
4.4.20.0130.0275.80
4.4.10.0030.0275.90
4.4.00.0030.0375.82
4.3.110.0070.0205.71
4.3.100.0070.0205.69
4.3.90.0030.0235.75
4.3.80.0100.0305.75
4.3.70.0130.0135.65
4.3.60.0070.0205.66
4.3.50.0030.0235.65
4.3.40.0100.0275.70
4.3.30.0030.0204.79
4.3.20.0000.0274.79
4.3.10.0070.0204.79
4.3.00.0070.0237.17

preferences:
65.76 ms | 401 KiB | 5 Q