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 PHP_EOL . '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)
8.3.70.0120.00616.75
8.3.60.0140.00018.54
8.3.50.0110.00721.19
8.3.40.0040.01118.71
8.3.30.0100.00718.51
8.3.20.0080.00020.13
8.3.10.0000.00823.84
8.3.00.0000.00823.83
8.2.180.0140.00016.59
8.2.170.0070.01022.96
8.2.160.0030.01022.30
8.2.150.0060.00324.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00417.38
8.2.110.0050.00519.39
8.2.100.0030.00917.91
8.2.90.0030.00518.98
8.2.80.0040.00417.97
8.2.70.0050.00317.63
8.2.60.0080.00018.03
8.2.50.0040.00418.07
8.2.40.0000.01021.25
8.2.30.0070.00018.06
8.2.20.0080.00017.75
8.2.10.0050.00317.99
8.2.00.0090.00018.00
8.1.280.0040.01225.92
8.1.270.0040.00420.22
8.1.260.0080.00026.35
8.1.250.0000.00728.09
8.1.240.0030.00621.36
8.1.230.0090.00317.42
8.1.220.0040.00417.74
8.1.210.0080.00018.77
8.1.200.0090.00017.23
8.1.190.0040.00417.11
8.1.180.0000.00818.10
8.1.170.0050.00318.76
8.1.160.0040.00421.98
8.1.150.0050.00218.77
8.1.140.0070.00017.50
8.1.130.0000.00717.62
8.1.120.0000.00717.32
8.1.110.0070.00017.46
8.1.100.0030.00317.45
8.1.90.0080.00017.39
8.1.80.0000.00917.45
8.1.70.0000.00717.37
8.1.60.0030.00617.57
8.1.50.0040.00417.43
8.1.40.0060.00317.44
8.1.30.0040.00417.42
8.1.20.0030.00517.64
8.1.10.0000.00717.41
8.1.00.0000.00817.43
8.0.300.0070.00018.77
8.0.290.0040.00416.75
8.0.280.0000.00718.38
8.0.270.0030.00317.25
8.0.260.0000.00717.25
8.0.250.0040.00416.82
8.0.240.0000.00716.85
8.0.230.0060.00316.99
8.0.220.0040.00416.89
8.0.210.0030.00316.80
8.0.200.0000.00616.91
8.0.190.0000.00916.85
8.0.180.0040.00416.96
8.0.170.0070.00016.91
8.0.160.0050.00216.83
8.0.150.0000.00816.88
8.0.140.0030.00316.81
8.0.130.0040.00313.33
8.0.120.0080.00016.87
8.0.110.0040.00416.79
8.0.100.0000.00716.86
8.0.90.0070.00016.95
8.0.80.0100.00716.93
8.0.70.0070.00016.80
8.0.60.0030.00516.76
8.0.50.0030.00516.70
8.0.30.0080.00917.06
8.0.20.0090.01017.40
8.0.10.0000.00816.83
8.0.00.0090.00816.76
7.4.330.0000.00515.08
7.4.320.0000.00616.60
7.4.300.0030.00316.45
7.4.290.0000.00716.59
7.4.280.0040.00716.41
7.4.270.0060.00016.53
7.4.260.0040.00416.63
7.4.250.0040.00416.56
7.4.240.0050.00216.63
7.4.230.0030.00316.40
7.4.220.0100.01016.68
7.4.210.0110.00316.64
7.4.200.0030.00316.50
7.4.160.0090.00616.60
7.4.150.0180.00317.40
7.4.140.0080.01217.86
7.4.130.0050.01216.58
7.4.120.0090.00916.61
7.4.110.0130.00316.55
7.4.100.0140.01116.47
7.4.90.0030.01416.55
7.4.80.0040.01719.39
7.4.70.0110.00516.52
7.4.60.0080.00816.41
7.4.50.0050.00016.63
7.4.40.0110.00716.25
7.4.30.0130.00316.44
7.4.00.0120.00314.94
7.3.330.0050.00013.02
7.3.320.0000.00713.17
7.3.310.0070.00016.21
7.3.300.0000.00616.27
7.3.290.0080.00716.31
7.3.280.0060.01216.25
7.3.270.0160.00717.40
7.3.260.0070.01016.50
7.3.250.0090.01116.35
7.3.240.0100.00616.49
7.3.230.0150.00916.49
7.3.210.0140.01116.20
7.3.200.0070.01016.54
7.3.190.0090.00616.49
7.3.180.0040.01516.42
7.3.170.0080.00816.27
7.3.160.0090.01116.47
7.2.330.0060.01216.68
7.2.320.0030.01816.65
7.2.310.0000.01916.70
7.2.300.0100.00716.71
7.2.290.0120.00616.72
7.2.80.0060.00616.24
7.2.60.0040.00817.02
7.2.00.0000.01119.38
7.1.200.0040.00715.74
7.1.100.0060.00618.02
7.1.70.0000.00817.12
7.1.60.0100.01419.12
7.1.50.0070.01816.92
7.1.00.0030.07722.33
7.0.200.0630.00715.00
7.0.60.0070.05719.91
7.0.50.0100.07317.88
7.0.40.0070.06020.21
7.0.30.0270.08020.20
7.0.20.0230.04720.18
7.0.10.0070.05720.13
7.0.00.0070.08320.19
5.6.280.0100.02721.11
5.6.210.0070.08020.75
5.6.200.0070.03718.19
5.6.190.0000.04720.41
5.6.180.0470.07320.57
5.6.170.0200.03720.46
5.6.160.0170.06720.32
5.6.150.0070.06018.17
5.6.140.0100.04318.09
5.6.130.0030.08718.17
5.6.120.0100.03721.14
5.6.110.0270.07020.95
5.6.100.0070.03721.03
5.6.90.0170.06720.96
5.6.80.0100.03720.43
5.5.350.0030.04020.38
5.5.340.0070.05318.02
5.5.330.0170.08020.27
5.5.320.0070.07720.18
5.5.310.0200.04320.51
5.5.300.0100.07717.88
5.5.290.0030.07017.91
5.5.280.0070.04720.93
5.5.270.0030.08720.75
5.5.260.0100.08020.88
5.5.250.0030.05720.77
5.5.240.0070.06020.18
5.4.450.0630.05319.58
5.4.440.0130.05719.64
5.4.430.0100.06019.45
5.4.420.0100.06019.60
5.4.410.0230.05019.32
5.4.400.0200.05319.14
5.4.390.0070.06019.00
5.4.380.0130.06019.15
5.4.370.0100.05719.07
5.4.360.0200.05319.12
5.4.350.0130.05319.14
5.4.340.0200.06019.14
5.4.320.0170.06319.14
5.4.310.0070.06019.11
5.4.300.0300.05018.99
5.4.290.0170.04719.28
5.4.280.0070.06019.15
5.4.270.0270.03719.08
5.4.260.0170.05019.12
5.4.250.0230.06319.27
5.4.240.0330.04719.25
5.4.230.0130.06018.94
5.4.220.0200.04719.14
5.4.210.0170.05018.96
5.4.200.0230.04016.65
5.4.190.0200.04719.09
5.4.180.0070.05718.81
5.4.170.0100.06018.96
5.4.160.0100.05319.12
5.4.150.0100.05318.94
5.4.140.0130.05016.30
5.4.130.0130.05016.50
5.4.120.0230.04016.32
5.4.110.0170.04716.44
5.4.100.0200.04316.50
5.4.90.0200.05016.59
5.4.80.0170.04716.24
5.4.70.0170.04716.33
5.4.60.0070.05716.23
5.4.50.0130.05016.46
5.4.40.0130.06716.22
5.4.30.0170.06016.29
5.4.20.0100.07016.29
5.4.10.0130.05016.23
5.4.00.0070.06316.05
5.3.290.0370.05714.61
5.3.280.0300.05014.54
5.3.270.0100.06714.49
5.3.260.0330.04314.39
5.3.250.0230.04714.55
5.3.240.0230.06314.59
5.3.230.0100.06014.55
5.3.220.0630.05714.52
5.3.210.1030.06714.55
5.3.200.0630.05014.40
5.3.190.0800.05014.68
5.3.180.0600.04714.50
5.3.170.0130.06014.55
5.3.160.0270.05314.51
5.3.150.0100.05314.50
5.3.140.0130.05314.43
5.3.130.4570.05014.54
5.3.120.0170.05314.43
5.3.110.0130.05714.35
5.3.100.0200.06313.98
5.3.90.0130.05713.81
5.3.80.0270.06013.87
5.3.70.0130.07314.00
5.3.60.0270.06013.95
5.3.50.0130.05713.93
5.3.40.0130.05313.72
5.3.30.0170.06313.89
5.3.20.0200.06013.64
5.3.10.0130.05313.49
5.3.00.0230.04313.65
5.2.170.0170.04311.13
5.2.160.0130.04310.94
5.2.150.0230.05311.29
5.2.140.0200.05711.03
5.2.130.0330.03311.12
5.2.120.0230.03710.99
5.2.110.0130.04310.96
5.2.100.0170.03711.05
5.2.90.0070.04711.12
5.2.80.0100.05310.88
5.2.70.0170.04011.04
5.2.60.0100.04311.12
5.2.50.0200.03711.00
5.2.40.0100.04310.88
5.2.30.0200.04310.81
5.2.20.0200.04711.00
5.2.10.0100.04710.88
5.2.00.0170.03310.72
5.1.60.0130.0339.97
5.1.50.0100.0409.85
5.1.40.0130.0379.89
5.1.30.0030.04310.38
5.1.20.0070.04310.25
5.1.10.0070.04010.15
5.1.00.0100.0409.98
5.0.50.0170.0208.48
5.0.40.0070.0308.45
5.0.30.0170.0508.11
5.0.20.0000.0308.07
5.0.10.0170.0278.09
5.0.00.0070.0408.38
4.4.90.0100.0176.63
4.4.80.0030.0236.63
4.4.70.0070.0236.63
4.4.60.0030.0236.63
4.4.50.0070.0206.63
4.4.40.0100.0336.63
4.4.30.0100.0236.63
4.4.20.0130.0136.63
4.4.10.0100.0206.63
4.4.00.0100.0336.63
4.3.110.0030.0276.63
4.3.100.0100.0176.63
4.3.90.0070.0206.63
4.3.80.0070.0336.63
4.3.70.0070.0206.63
4.3.60.0100.0176.63
4.3.50.0100.0276.63
4.3.40.0000.0406.63
4.3.30.0030.0236.63
4.3.20.0070.0206.63
4.3.10.0070.0206.63
4.3.00.0100.0207.24

preferences:
63.95 ms | 401 KiB | 5 Q