3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [1,2]; foreach($array as $a) { if ($a == 1) { $array[] = 3; } echo $a . "\n"; } echo "-----\n"; $array = [1,2]; foreach($array as &$a) { if ($a == 1) { $array[] = 3; $array[] = 4; } echo $a . "\n"; } echo "----------\n"; var_dump($array); reset($array); foreach($array as $a) { echo $a . "\n"; }

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)
8.3.60.0090.00618.55
8.3.50.0110.01118.33
8.3.40.0090.00618.88
8.3.30.0140.00018.66
8.3.20.0040.00420.39
8.3.10.0050.00320.86
8.3.00.0080.00020.77
8.2.180.0060.01216.50
8.2.170.0150.00622.96
8.2.160.0100.01020.53
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0030.00619.83
8.2.120.0040.00426.35
8.2.110.0060.00322.05
8.2.100.0080.00318.03
8.2.90.0000.00819.22
8.2.80.0000.00817.97
8.2.70.0000.00817.63
8.2.60.0000.00917.93
8.2.50.0000.00818.10
8.2.40.0000.00720.47
8.2.30.0000.00819.32
8.2.20.0000.00718.18
8.2.10.0030.00618.17
8.2.00.0050.00218.12
8.1.280.0110.01125.92
8.1.270.0080.00023.99
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0000.00920.88
8.1.230.0080.00319.14
8.1.220.0040.00417.74
8.1.210.0030.00518.77
8.1.200.0040.00417.35
8.1.190.0070.00317.23
8.1.180.0000.00818.10
8.1.170.0040.00418.64
8.1.160.0000.00719.07
8.1.150.0040.00418.77
8.1.140.0050.00319.54
8.1.130.0040.00418.79
8.1.120.0070.00017.52
8.1.110.0070.00017.45
8.1.100.0040.00417.47
8.1.90.0000.00817.37
8.1.80.0030.00517.46
8.1.70.0030.00317.47
8.1.60.0060.00317.58
8.1.50.0040.00417.54
8.1.40.0070.00017.52
8.1.30.0000.01117.73
8.1.20.0040.00417.68
8.1.10.0000.00817.46
8.1.00.0000.00917.49
8.0.300.0060.00318.77
8.0.290.0030.00516.75
8.0.280.0070.00018.49
8.0.270.0030.00317.25
8.0.260.0000.00818.88
8.0.250.0070.00016.95
8.0.240.0000.00816.91
8.0.230.0090.00016.97
8.0.220.0000.00716.81
8.0.210.0000.00716.79
8.0.200.0070.00016.96
8.0.190.0000.00816.95
8.0.180.0000.00716.83
8.0.170.0030.00416.82
8.0.160.0040.00416.92
8.0.150.0030.00516.73
8.0.140.0030.00316.85
8.0.130.0000.00613.29
8.0.120.0060.00316.98
8.0.110.0040.00416.71
8.0.100.0070.00016.90
8.0.90.0060.00516.73
8.0.80.0060.01016.90
8.0.70.0050.00316.76
8.0.60.0000.00816.77
8.0.50.0050.00216.71
8.0.30.0100.00917.11
8.0.20.0120.00717.40
8.0.10.0000.00817.00
8.0.00.0120.00616.77
7.4.330.0050.00015.55
7.4.320.0000.00716.61
7.4.300.0060.00016.61
7.4.290.0030.00316.63
7.4.280.0070.00016.54
7.4.270.0040.00416.57
7.4.260.0030.00416.37
7.4.250.0000.00716.45
7.4.240.0040.00416.55
7.4.230.0000.00816.59
7.4.220.0110.00616.56
7.4.210.0060.01016.61
7.4.200.0030.00316.63
7.4.160.0090.00716.48
7.4.150.0120.00617.40
7.4.140.0060.01317.86
7.4.130.0190.00616.59
7.4.120.0130.00516.50
7.4.110.0040.01816.63
7.4.100.0160.00316.41
7.4.90.0070.01016.48
7.4.80.0090.00719.39
7.4.70.0130.00316.45
7.4.60.0090.00816.37
7.4.50.0150.00416.50
7.4.40.0120.00616.34
7.4.30.0110.00616.54
7.4.00.0060.01014.90
7.3.330.0060.00013.18
7.3.320.0050.00013.18
7.3.310.0030.00316.23
7.3.300.0070.00016.18
7.3.290.0060.00016.30
7.3.280.0090.00816.25
7.3.270.0090.00917.40
7.3.260.0060.01216.51
7.3.250.0080.01116.40
7.3.240.0110.00716.37
7.3.230.0090.00916.73
7.3.210.0080.00816.50
7.3.200.0140.01116.45
7.3.190.0060.01016.30
7.3.180.0120.00316.29
7.3.170.0110.00916.50
7.3.160.0030.01316.23
7.3.120.0070.01114.59
7.3.110.0000.01615.16
7.3.100.0150.00014.75
7.3.90.0060.00614.69
7.3.80.0040.01115.07
7.3.70.0030.01014.68
7.3.60.0060.00314.91
7.3.50.0030.01014.67
7.3.40.0030.01414.75
7.3.30.0060.00614.84
7.3.20.0040.00816.57
7.3.10.0000.01416.68
7.3.00.0040.00816.60
7.2.330.0100.00716.73
7.2.320.0070.01116.73
7.2.310.0050.01816.81
7.2.300.0060.01116.59
7.2.290.0090.00916.80
7.2.250.0070.01015.04
7.2.240.0060.00914.66
7.2.230.0130.00015.14
7.2.220.0000.01214.92
7.2.210.0030.01015.05
7.2.200.0090.00615.09
7.2.190.0120.00015.05
7.2.180.0130.00315.05
7.2.170.0070.00714.99
7.2.60.0070.00716.84
7.1.330.0040.01115.56
7.1.320.0040.00815.73
7.1.310.0030.01216.11
7.1.300.0090.00615.57
7.1.290.0040.01115.68
7.1.280.0110.00415.73
7.1.270.0040.00415.72
7.1.260.0040.00715.62
7.1.200.0050.00815.71
7.1.70.0120.00616.86
7.1.60.0220.00734.75
7.1.50.0210.01434.91
7.1.40.0320.01134.30
7.1.30.0220.02034.48
7.1.20.0220.01934.46
7.1.10.0120.00916.67
7.1.00.0050.01116.55
7.0.200.0000.01716.79
7.0.190.0080.01116.61
7.0.180.0090.01216.51
7.0.170.0100.01016.31
7.0.160.0100.00616.18
7.0.150.0090.01216.35
7.0.140.0150.00416.28
7.0.130.0000.01616.57
7.0.120.0120.00616.63
7.0.110.0080.00816.58
7.0.100.0080.00916.29
7.0.90.0080.00816.32
7.0.80.0120.00916.61
7.0.70.0090.00616.34
7.0.60.0000.01816.34
7.0.50.0000.01916.54
7.0.40.0120.00316.68
7.0.30.0030.01416.66
7.0.20.0060.00916.32
7.0.10.0030.01216.51
7.0.00.0060.00916.68

preferences:
39.19 ms | 400 KiB | 5 Q