3v4l.org

run code in 300+ PHP versions simultaneously
<?php $snippet = '<?foreach($_GET[A]as$k=>$v){$b[$v][0]=$v;$b[$v][]=$k;}print_r([...$b]);'; echo 'Byte length: ' , strlen($snippet) , "\n"; $_GET[A] = [3, 2, 2, 3]; foreach($_GET[A]as$k=>$v){$b[$v][0]=$v;$b[$v][]=$k;}print_r([...$b]); // [[3, 0, 3], [2, 1, 2]] echo "\n---\n"; unset($b); $_GET[A] = [17]; foreach($_GET[A]as$k=>$v){$b[$v][0]=$v;$b[$v][]=$k;}print_r([...$b]); // [[17, 0]] echo "\n---\n"; unset($b); $_GET[A] = [1, 1]; foreach($_GET[A]as$k=>$v){$b[$v][0]=$v;$b[$v][]=$k;}print_r([...$b]); // [[1, 0, 1]] echo "\n---\n"; unset($b); $_GET[A] = [1, 1, 2]; foreach($_GET[A]as$k=>$v){$b[$v][0]=$v;$b[$v][]=$k;}print_r([...$b]); // [[1, 0, 1], [2, 2]] echo "\n---\n"; unset($b); $_GET[A] = [1, 2, 3, 4]; foreach($_GET[A]as$k=>$v){$b[$v][0]=$v;$b[$v][]=$k;}print_r([...$b]); // [[1, 0], [2, 1], [3, 2], [4, 3]] echo "\n---\n"; unset($b); $_GET[A] = [1, 1, 1, 1]; foreach($_GET[A]as$k=>$v){$b[$v][0]=$v;$b[$v][]=$k;}print_r([...$b]); // [[1, 0, 1, 2, 3]]

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)
8.3.60.0140.00718.24
8.3.50.0070.00716.25
8.3.40.0090.00618.75
8.3.30.0080.00818.86
8.3.20.0070.00021.89
8.3.10.0070.00021.96
8.3.00.0040.00422.46
8.2.180.0120.00318.29
8.2.170.0070.01022.96
8.2.160.0070.00722.14
8.2.150.0000.00924.18
8.2.140.0050.00324.66
8.2.130.0050.00326.16
8.2.120.0080.00019.76
8.2.110.0030.00722.08
8.2.100.0000.01117.91
8.2.90.0060.00318.03
8.2.80.0050.00319.12
8.2.70.0090.00317.80
8.2.60.0050.00318.16
8.2.50.0030.00718.10
8.2.40.0000.00919.53
8.2.30.0000.00819.16
8.2.20.0040.00418.16
8.2.10.0000.00719.34
8.2.00.0040.00419.38
8.1.280.0180.00425.92
8.1.270.0050.00320.73
8.1.260.0080.00026.35
8.1.250.0070.00028.09
8.1.240.0000.00920.46
8.1.230.0070.00420.98
8.1.220.0080.00017.74
8.1.210.0090.00018.77
8.1.200.0080.00017.23
8.1.190.0080.00017.13
8.1.180.0040.00418.10
8.1.170.0060.00318.59
8.1.160.0040.00718.93
8.1.150.0080.00018.97
8.1.140.0050.00320.83
8.1.130.0030.00320.13
8.1.120.0030.00317.49
8.1.110.0050.00317.38
8.1.100.0000.00817.52
8.1.90.0110.00317.46
8.1.80.0000.00717.48
8.1.70.0030.00317.49
8.1.60.0050.00317.52
8.1.50.0040.00417.54
8.1.40.0040.00417.56
8.1.30.0000.00817.52
8.1.20.0030.00517.71
8.1.10.0030.00717.65
8.1.00.0000.00717.46
8.0.300.0040.00420.08
8.0.290.0000.00716.75
8.0.280.0000.00718.48
8.0.270.0030.00316.91
8.0.260.0030.00321.90
8.0.250.0000.00716.96
8.0.240.0060.00317.03
8.0.230.0030.00317.05
8.0.220.0040.00416.88
8.0.210.0070.00016.88
8.0.200.0040.00416.92
8.0.190.0000.00717.09
8.0.180.0040.00416.92
8.0.170.0000.00817.04
8.0.160.0030.00316.90
8.0.150.0000.00716.88
8.0.140.0040.00416.84
8.0.130.0060.00013.41
8.0.120.0000.00816.89
8.0.110.0000.00716.83
8.0.100.0020.00517.05
8.0.90.0040.00416.89
8.0.80.0070.00716.94
8.0.70.0070.00016.79
8.0.60.0040.00416.93
8.0.50.0050.00316.97
8.0.30.0060.01817.38
8.0.20.0070.01116.90
8.0.10.0040.00316.96
8.0.00.0080.01216.81
7.4.330.0000.00515.55
7.4.320.0070.00016.45
7.4.300.0030.00316.64
7.4.290.0040.00416.64
7.4.280.0080.00416.68
7.4.270.0030.00316.54
7.4.260.0000.00513.34
7.4.250.0000.00716.52
7.4.240.0020.00516.47
7.4.230.0000.00716.29
7.4.220.0040.00416.44
7.4.210.0080.01016.65
7.4.200.0070.00016.45
7.4.140.0050.01317.86
7.4.130.0160.00816.61
7.4.120.0100.01516.72
7.4.110.0160.00316.52
7.4.100.0110.00716.40
7.4.90.0050.01316.51
7.4.80.0040.01819.39
7.4.70.0170.00416.66
7.4.60.0100.00716.55
7.4.50.0060.00916.65
7.4.40.0100.01016.44
7.3.330.0000.00716.22
7.3.320.0000.00513.23
7.3.310.0000.00716.16
7.3.300.0000.00616.19
7.3.290.0040.00416.16
7.3.260.0120.00716.24
7.3.240.0080.01016.24
7.3.230.0150.00016.23
7.3.210.0130.00316.42
7.3.200.0080.00916.27
7.3.190.0070.01016.43
7.3.180.0090.00916.14
7.3.170.0040.01116.33
7.3.160.0090.01016.20
7.3.90.0030.01014.34
7.3.80.0110.00414.84
7.3.70.0100.00714.36
7.3.60.0080.00814.50
7.3.50.0060.00914.48
7.3.40.0100.00714.46
7.3.30.0070.01014.58
7.3.20.0080.00814.63
7.3.10.0030.01314.59
7.3.00.0060.01214.39
7.2.330.0100.01316.23
7.2.320.0100.00716.36
7.2.310.0060.01016.57
7.2.300.0030.01316.59
7.2.290.0090.00616.17
7.2.220.0070.01414.84
7.2.210.0090.00914.49
7.2.200.0140.00414.89
7.2.190.0120.00614.51
7.2.180.0120.00614.73
7.2.170.0070.01114.46
7.2.160.0070.01014.69
7.2.150.0110.00714.64
7.2.140.0030.01614.71
7.2.130.0080.01414.50
7.2.120.0130.00614.76
7.2.110.0100.01014.70
7.2.100.0100.01014.40
7.2.90.0090.01214.84
7.2.80.0060.01014.80
7.2.70.0140.00414.70
7.2.60.0100.00514.75
7.2.50.0090.00614.45
7.2.40.0060.00914.95
7.2.30.0130.00314.92
7.2.20.0070.01414.94
7.2.10.0130.00314.93
7.2.00.0030.01214.79
7.1.320.0130.01013.81
7.1.310.0090.00613.63
7.1.300.0120.00313.60
7.1.290.0070.01013.64
7.1.280.0070.01013.44
7.1.270.0000.01413.79
7.1.260.0090.00613.43
7.1.250.0030.01013.80

preferences:
55.78 ms | 400 KiB | 5 Q