3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = [1,2,3]; foreach($a as &$num) {} echo json_encode($a),"\n"; foreach($a as $num) { echo json_encode($a),"\n"; } echo implode(',',$a).PHP_EOL; // 1,2,2

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)
8.3.70.0120.00318.56
8.3.60.0190.00318.31
8.3.50.0210.00016.51
8.3.40.0120.00318.67
8.3.30.0130.00318.73
8.3.20.0040.00419.23
8.3.10.0040.00423.48
8.3.00.0050.00223.51
8.2.190.0170.00316.58
8.2.180.0090.00618.14
8.2.170.0150.00618.79
8.2.160.0150.00022.96
8.2.150.0040.00425.66
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0080.00020.79
8.2.110.0070.00321.01
8.2.100.0000.01217.84
8.2.90.0040.00419.28
8.2.80.0050.00517.97
8.2.70.0000.00817.92
8.2.60.0040.00417.93
8.2.50.0040.00418.10
8.2.40.0000.00819.39
8.2.30.0080.00019.35
8.2.20.0040.00417.93
8.2.10.0070.00018.02
8.2.00.0000.00819.36
8.1.280.0140.00725.92
8.1.270.0000.00722.20
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0030.00623.84
8.1.230.0060.00620.66
8.1.220.0000.01017.74
8.1.210.0000.00818.92
8.1.200.0030.00617.35
8.1.190.0000.00817.23
8.1.180.0040.00418.10
8.1.170.0000.00818.82
8.1.160.0000.00818.82
8.1.150.0000.00718.80
8.1.140.0000.00817.68
8.1.130.0080.00019.02
8.1.120.0030.00317.41
8.1.110.0050.00217.40
8.1.100.0040.00417.48
8.1.90.0070.00017.42
8.1.80.0070.00317.36
8.1.70.0060.00317.39
8.1.60.0000.00717.46
8.1.50.0030.00617.52
8.1.40.0060.00317.46
8.1.30.0040.00417.71
8.1.20.0070.00017.63
8.1.10.0040.00417.53
8.1.00.0040.00417.41
8.0.300.0070.00019.94
8.0.290.0000.00816.75
8.0.280.0030.00518.36
8.0.270.0000.00717.16
8.0.260.0000.00617.30
8.0.250.0000.00716.92
8.0.240.0000.01016.95
8.0.230.0040.00416.95
8.0.220.0040.00416.84
8.0.210.0070.00016.82
8.0.200.0030.00316.81
8.0.190.0000.00816.90
8.0.180.0070.00016.95
8.0.170.0030.00616.81
8.0.160.0070.00016.89
8.0.150.0070.00416.64
8.0.140.0050.00216.77
8.0.130.0000.00513.20
8.0.120.0000.00716.90
8.0.110.0030.00516.70
8.0.100.0000.00716.79
8.0.90.0000.00716.84
8.0.80.0070.00816.82
8.0.70.0050.00216.84
8.0.60.0040.00416.88
8.0.50.0040.00416.92
8.0.30.0100.01117.12
8.0.20.0100.01117.40
8.0.10.0070.00017.00
8.0.00.0090.00916.80
7.4.330.0050.00015.55
7.4.320.0000.00616.46
7.4.300.0080.00016.50
7.4.290.0020.00516.54
7.4.280.0030.00516.43
7.4.270.0070.00416.45
7.4.260.0030.00316.50
7.4.250.0030.00316.53
7.4.240.0000.00816.49
7.4.230.0070.00016.38
7.4.220.0040.00416.61
7.4.210.0080.00916.60
7.4.200.0040.00416.68
7.4.160.0110.00816.48
7.4.140.0140.00417.86
7.4.130.0070.01316.44
7.4.120.0090.01216.52
7.4.110.0110.00516.52
7.4.100.0130.00316.53
7.4.90.0120.00916.63
7.4.80.0070.01019.39
7.4.70.0110.00816.46
7.4.60.0060.00916.41
7.4.50.0030.01216.48
7.4.40.0100.01316.59
7.4.00.0040.01414.89
7.3.330.0050.00013.18
7.3.320.0000.00613.01
7.3.310.0030.00316.25
7.3.300.0080.00016.21
7.3.290.0080.00016.09
7.3.280.0100.01016.29
7.3.260.0080.01016.62
7.3.240.0110.00816.42
7.3.230.0030.01516.35
7.3.210.0070.01016.23
7.3.200.0090.00916.50
7.3.190.0030.01316.32
7.3.180.0100.00616.30
7.3.170.0120.00316.48
7.3.160.0120.00616.43
7.2.330.0040.01316.82
7.2.320.0030.01916.59
7.2.310.0180.00016.50
7.2.300.0130.01016.71
7.2.290.0120.00616.68
7.2.70.0230.00715.12
7.2.60.0230.00614.98
7.2.50.0230.00715.05
7.2.40.0160.01315.04
7.2.30.0220.00614.88
7.2.20.0130.01714.79
7.2.10.0140.01414.95
7.2.00.0130.01315.04
7.1.200.0070.00315.86
7.1.170.0180.00913.87
7.1.160.0170.01013.77
7.1.150.0130.01314.08
7.1.140.0180.00913.91
7.1.130.0190.00613.71
7.1.120.0210.00413.82
7.1.110.0160.00913.89
7.1.100.0160.01013.81
7.1.90.0130.01713.72
7.1.80.0170.01113.84
7.1.70.0200.00813.84
7.1.60.0390.01331.75
7.1.50.0290.01331.81
7.1.40.0390.01331.79
7.1.30.0650.01231.66
7.1.20.0290.01431.71
7.1.10.0140.00713.39
7.1.00.0110.01513.80

preferences:
77.51 ms | 401 KiB | 5 Q