3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(1,2,3,4); $b = &$a; foreach($b as $i => $v) { echo "$i => $v\n"; /*if (isset($b[$i+1])) { $b[$i+1] += 1; }*/ unset($b[$i+1]); } var_dump($a, $b);

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)
8.3.60.0110.00316.25
8.3.50.0100.00822.05
8.3.40.0110.00418.58
8.3.30.0100.00318.81
8.3.20.0080.00020.16
8.3.10.0000.00821.89
8.3.00.0040.00419.85
8.2.180.0120.00618.25
8.2.170.0140.00722.96
8.2.160.0070.00720.24
8.2.150.0040.00424.18
8.2.140.0070.00024.66
8.2.130.0080.00019.14
8.2.120.0080.00026.35
8.2.110.0070.00322.13
8.2.100.0080.00318.03
8.2.90.0050.00319.30
8.2.80.0000.00817.97
8.2.70.0040.00417.63
8.2.60.0080.00018.05
8.2.50.0050.00318.07
8.2.40.0050.00522.20
8.2.30.0000.00720.69
8.2.20.0000.00717.62
8.2.10.0040.00418.23
8.2.00.0030.00518.10
8.1.280.0030.01325.92
8.1.270.0080.00020.33
8.1.260.0000.00728.09
8.1.250.0040.00428.09
8.1.240.0200.00022.27
8.1.230.0070.00422.64
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0100.00017.23
8.1.190.0000.00917.22
8.1.180.0040.00418.10
8.1.170.0030.00618.51
8.1.160.0040.00420.76
8.1.150.0040.00418.85
8.1.140.0080.00019.45
8.1.130.0030.00317.62
8.1.120.0000.00717.52
8.1.110.0000.00717.43
8.1.100.0080.00017.41
8.1.90.0040.00417.40
8.1.80.0040.00417.52
8.1.70.0040.00417.40
8.1.60.0040.00417.49
8.1.50.0050.00317.53
8.1.40.0000.00817.59
8.1.30.0090.00017.66
8.1.20.0050.00317.71
8.1.10.0030.00617.42
8.1.00.0090.00017.29
8.0.300.0040.00418.77
8.0.290.0050.00316.60
8.0.280.0050.00218.43
8.0.270.0030.00317.30
8.0.260.0000.00717.26
8.0.250.0070.00016.97
8.0.240.0030.00316.79
8.0.230.0040.00416.90
8.0.220.0030.00316.79
8.0.210.0080.00016.88
8.0.200.0000.00716.84
8.0.190.0040.00816.98
8.0.180.0040.00416.93
8.0.170.0070.00016.94
8.0.160.0000.00716.79
8.0.150.0030.00516.86
8.0.140.0000.00716.88
8.0.130.0000.00613.36
8.0.120.0040.00416.89
8.0.110.0000.00816.76
8.0.100.0000.00716.88
8.0.90.0040.00416.79
8.0.80.0060.00916.87
8.0.70.0030.00517.00
8.0.60.0080.00016.96
8.0.50.0070.00016.84
8.0.30.0100.00817.05
8.0.20.0090.01217.40
8.0.10.0030.00517.00
8.0.00.0090.00916.84
7.4.330.0020.00216.84
7.4.320.0030.00316.50
7.4.300.0060.00316.55
7.4.290.0070.00016.64
7.4.280.0080.00016.39
7.4.270.0030.00316.55
7.4.260.0000.00716.51
7.4.250.0000.00716.39
7.4.240.0020.00516.54
7.4.230.0050.00216.63
7.4.220.0000.01716.62
7.4.210.0000.01416.63
7.4.200.0040.00316.30
7.4.160.0040.01416.46
7.4.150.0080.01217.40
7.4.140.0090.01117.86
7.4.130.0190.00616.59
7.4.120.0130.00816.61
7.4.110.0030.01916.49
7.4.100.0060.01216.47
7.4.90.0120.00816.36
7.4.80.0120.00619.39
7.4.70.0140.00816.63
7.4.60.0130.00316.50
7.4.50.0030.00816.37
7.4.40.0130.00516.40
7.4.30.0100.00716.67
7.4.00.0070.00715.14
7.3.330.0060.00013.24
7.3.320.0050.00013.29
7.3.310.0000.00616.38
7.3.300.0040.00416.35
7.3.290.0070.00716.33
7.3.280.0100.00716.30
7.3.270.0160.00617.40
7.3.260.0050.01116.46
7.3.240.0080.00816.30
7.3.230.0060.01116.52
7.3.210.0100.00716.43
7.3.200.0160.00016.28
7.3.190.0030.01316.62
7.3.180.0100.00716.36
7.3.170.0040.01716.39
7.3.160.0030.01316.79
7.3.10.0200.00016.57
7.3.00.0110.01116.71
7.2.330.0110.00716.51
7.2.320.0030.01516.30
7.2.310.0090.00916.62
7.2.300.0100.01016.66
7.2.290.0110.00616.66
7.2.130.0100.00616.39
7.2.120.0110.00616.88
7.2.110.0110.00716.27
7.2.100.0000.01516.41
7.2.90.0030.01316.63
7.2.80.0110.00716.78
7.2.70.0130.00316.75
7.2.60.0060.00916.74
7.2.50.0100.00716.37
7.2.40.0140.00616.71
7.2.30.0080.01316.85
7.2.20.0070.01116.49
7.2.10.0030.01016.42
7.2.00.0080.00718.10
7.1.250.0130.00715.60
7.1.200.0030.01015.80
7.1.100.0030.01318.23
7.1.70.0030.00617.01
7.1.60.0110.01419.44
7.1.50.0090.01616.69
7.1.00.0070.07322.46
7.0.200.0040.00416.53
7.0.60.0100.07720.02
7.0.50.0030.05717.88
7.0.40.0070.05320.12
7.0.30.0270.06720.16
7.0.20.0200.05720.02
7.0.10.0030.06020.09
7.0.00.0100.08020.18
5.6.280.0000.03320.92
5.6.210.0200.05720.66
5.6.200.0030.04018.22
5.6.190.0030.08320.27
5.6.180.0130.06020.39
5.6.170.0270.07720.38
5.6.160.0100.07020.33
5.6.150.0170.04018.07
5.6.140.0030.06318.11
5.6.130.0100.06318.23
5.6.120.0100.08720.98
5.6.110.0070.09021.04
5.6.100.0200.07020.97
5.6.90.0130.07720.96
5.6.80.0070.08020.32
5.5.350.0170.05720.29
5.5.340.0100.04318.02
5.5.330.0070.05720.19
5.5.320.0300.08020.52
5.5.310.0200.08320.13
5.5.300.0100.06717.98
5.5.290.0030.08317.96
5.5.280.0070.07020.86
5.5.270.0170.07720.86
5.5.260.0030.04020.67
5.5.250.0170.07320.47
5.5.240.3700.03020.23

preferences:
69.76 ms | 401 KiB | 5 Q