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"; } $a = 10; echo "----------\n"; var_dump($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)
8.3.60.0090.00618.43
8.3.50.0190.00318.11
8.3.40.0090.00618.84
8.3.30.0040.01118.76
8.3.20.0040.00420.34
8.3.10.0030.00520.91
8.3.00.0050.00220.96
8.2.180.0090.00616.32
8.2.170.0140.00722.96
8.2.160.0160.00420.35
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0000.00819.76
8.2.120.0040.00426.35
8.2.110.0070.00322.16
8.2.100.0090.00317.84
8.2.90.0000.00819.17
8.2.80.0000.00818.16
8.2.70.0000.00817.75
8.2.60.0040.00417.77
8.2.50.0080.00018.10
8.2.40.0000.00820.50
8.2.30.0000.00719.25
8.2.20.0080.00018.13
8.2.10.0050.00318.18
8.2.00.0040.00418.17
8.1.280.0150.00625.92
8.1.270.0080.00022.19
8.1.260.0030.00626.35
8.1.250.0040.00428.09
8.1.240.0030.00620.88
8.1.230.0070.00319.13
8.1.220.0000.00817.91
8.1.210.0040.00418.77
8.1.200.0060.00317.38
8.1.190.0060.00317.35
8.1.180.0080.00018.10
8.1.170.0000.00818.53
8.1.160.0030.00318.97
8.1.150.0000.00718.93
8.1.140.0050.00319.53
8.1.130.0000.00718.84
8.1.120.0040.00417.50
8.1.110.0030.00517.37
8.1.100.0000.00717.44
8.1.90.0070.00017.50
8.1.80.0050.00217.48
8.1.70.0030.00317.52
8.1.60.0050.00317.61
8.1.50.0050.00317.45
8.1.40.0040.00417.52
8.1.30.0040.00817.64
8.1.20.0000.00717.55
8.1.10.0040.00417.45
8.1.00.0060.00317.34
8.0.300.0000.00718.77
8.0.290.0030.00516.75
8.0.280.0030.00318.41
8.0.270.0050.00317.20
8.0.260.0070.00018.81
8.0.250.0030.00316.96
8.0.240.0040.00416.95
8.0.230.0030.00716.98
8.0.220.0000.00816.86
8.0.210.0000.00716.95
8.0.200.0030.00316.97
8.0.190.0080.00016.87
8.0.180.0030.00316.90
8.0.170.0080.00016.95
8.0.160.0040.00416.88
8.0.150.0070.00016.89
8.0.140.0030.00316.77
8.0.130.0000.00513.30
8.0.120.0000.00816.87
8.0.110.0040.00416.90
8.0.100.0040.00416.89
8.0.90.0060.00316.83
8.0.80.0100.01016.89
8.0.70.0040.00416.72
8.0.60.0050.00216.80
8.0.50.0030.00516.79
8.0.30.0090.00817.04
8.0.20.0120.01117.40
8.0.10.0040.00416.92
8.0.00.0080.00816.69
7.4.330.0050.00015.55
7.4.320.0040.00416.46
7.4.300.0000.00616.61
7.4.290.0000.00816.59
7.4.280.0040.00416.61
7.4.270.0000.00716.58
7.4.260.0030.00316.61
7.4.250.0080.00016.43
7.4.240.0040.00416.38
7.4.230.0070.00016.62
7.4.220.0110.00716.66
7.4.210.0080.00916.52
7.4.200.0000.00716.45
7.4.160.0070.00716.42
7.4.150.0060.01217.40
7.4.140.0110.00717.86
7.4.130.0140.01116.49
7.4.120.0130.00516.54
7.4.110.0090.01516.50
7.4.100.0130.00516.51
7.4.90.0040.01316.46
7.4.80.0100.00719.39
7.4.70.0040.01216.43
7.4.60.0090.00616.54
7.4.50.0100.00016.38
7.4.40.0130.00416.41
7.4.30.0070.01016.66
7.4.00.0040.01115.08
7.3.330.0050.00013.21
7.3.320.0050.00013.11
7.3.310.0030.00316.34
7.3.300.0050.00316.18
7.3.290.0040.00416.11
7.3.280.0080.00916.25
7.3.270.0120.00617.40
7.3.260.0110.00616.43
7.3.250.0110.00816.34
7.3.240.0100.00816.47
7.3.230.0090.00916.32
7.3.210.0030.01216.49
7.3.200.0090.01216.47
7.3.190.0000.01816.37
7.3.180.0120.00316.50
7.3.170.0130.00816.55
7.3.160.0000.01616.49
7.2.330.0000.01816.38
7.2.320.0150.00916.41
7.2.310.0140.00716.43
7.2.300.0030.01316.48
7.2.290.0050.01116.78
7.2.60.0060.00617.03
7.1.200.0000.01415.68
7.1.70.0070.01317.27
7.1.60.0230.01335.16
7.1.50.0280.00834.58
7.1.40.0270.01834.57
7.1.30.0280.01634.40
7.1.20.0280.01034.51
7.1.10.0030.01816.67
7.1.00.0110.01016.68
7.0.200.0030.01416.97
7.0.190.0070.01216.81
7.0.180.0070.01316.06
7.0.170.0060.01116.33
7.0.160.0190.00416.52
7.0.150.0080.01516.26
7.0.140.0100.01116.37
7.0.130.0140.00816.50
7.0.120.0140.00616.52
7.0.110.0060.01016.38
7.0.100.0080.00916.41
7.0.90.0090.00916.32
7.0.80.0090.00916.37
7.0.70.0070.01316.51
7.0.60.0030.01316.25
7.0.50.0030.01316.57
7.0.40.0030.01516.44
7.0.30.0060.01216.44
7.0.20.0100.01016.36
7.0.10.0060.01216.35
7.0.00.0030.01716.39

preferences:
60.35 ms | 401 KiB | 5 Q