3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(1,2,3); $b = &$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)
8.3.60.0040.01116.73
8.3.50.0190.01122.09
8.3.40.0060.00918.59
8.3.30.0160.00018.85
8.3.20.0040.00420.35
8.3.10.0040.00423.53
8.3.00.0040.00419.78
8.2.180.0140.00718.17
8.2.170.0090.00622.96
8.2.160.0040.01220.45
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0060.00319.39
8.2.120.0040.00426.35
8.2.110.0070.00322.31
8.2.100.0080.00418.05
8.2.90.0040.00419.17
8.2.80.0030.00617.97
8.2.70.0040.00417.75
8.2.60.0030.00518.04
8.2.50.0030.00618.07
8.2.40.0000.00822.38
8.2.30.0070.00020.50
8.2.20.0040.00417.63
8.2.10.0000.00818.18
8.2.00.0040.00418.07
8.1.280.0130.00625.92
8.1.270.0000.00820.06
8.1.260.0040.00428.09
8.1.250.0040.00428.09
8.1.240.0000.00822.14
8.1.230.0070.00417.77
8.1.220.0040.00417.74
8.1.210.0050.00318.77
8.1.200.0000.01017.35
8.1.190.0000.00817.00
8.1.180.0000.00818.10
8.1.170.0040.00418.64
8.1.160.0000.00720.68
8.1.150.0000.00718.80
8.1.140.0000.00819.46
8.1.130.0030.00317.75
8.1.120.0070.00017.47
8.1.110.0050.00317.36
8.1.100.0000.00817.53
8.1.90.0040.00417.30
8.1.80.0030.00317.47
8.1.70.0070.00017.40
8.1.60.0050.00317.59
8.1.50.0000.00817.54
8.1.40.0040.00417.51
8.1.30.0090.00017.55
8.1.20.0000.00717.63
8.1.10.0000.00817.48
8.1.00.0000.00717.41
8.0.300.0030.00618.77
8.0.290.0070.00016.63
8.0.280.0000.00818.44
8.0.270.0040.00417.27
8.0.260.0060.00017.18
8.0.250.0040.00416.96
8.0.240.0060.00016.97
8.0.230.0020.00716.92
8.0.220.0050.00316.80
8.0.210.0040.00416.93
8.0.200.0000.00616.94
8.0.190.0080.00316.94
8.0.180.0040.00416.88
8.0.170.0040.00416.82
8.0.160.0040.00416.93
8.0.150.0000.00816.81
8.0.140.0050.00216.82
8.0.130.0060.00013.33
8.0.120.0040.00416.76
8.0.110.0000.00716.83
8.0.100.0070.00016.74
8.0.90.0040.00416.84
8.0.80.0070.01016.94
8.0.70.0050.00316.82
8.0.60.0000.00716.90
8.0.50.0040.00416.78
8.0.30.0110.00817.00
8.0.20.0080.01217.40
8.0.10.0040.00417.01
8.0.00.0080.00916.69
7.4.330.0050.00016.69
7.4.320.0070.00016.52
7.4.300.0000.00816.39
7.4.290.0020.00516.59
7.4.280.0040.00416.51
7.4.270.0030.00316.50
7.4.260.0050.00316.52
7.4.250.0040.00416.48
7.4.240.0040.00416.54
7.4.230.0000.00716.70
7.4.220.0090.00916.63
7.4.210.0130.00616.63
7.4.200.0030.00316.68
7.4.160.0080.00816.42
7.4.150.0150.00417.40
7.4.140.0130.00817.86
7.4.130.0090.00916.63
7.4.120.0120.00616.50
7.4.110.0040.01516.50
7.4.100.0030.01516.62
7.4.90.0030.01316.37
7.4.80.0140.01119.39
7.4.70.0030.01316.40
7.4.60.0110.00716.48
7.4.50.0060.00616.29
7.4.40.0120.00916.49
7.4.30.0070.01516.69
7.4.00.0060.01114.78
7.3.330.0030.00313.21
7.3.320.0030.00313.04
7.3.310.0070.00016.33
7.3.300.0040.00416.28
7.3.290.0040.01116.35
7.3.280.0120.00416.37
7.3.270.0140.00317.40
7.3.260.0130.01316.30
7.3.240.0080.00916.61
7.3.230.0100.00716.65
7.3.210.0130.00316.56
7.3.200.0120.00916.32
7.3.190.0130.00416.52
7.3.180.0000.01716.56
7.3.170.0120.00916.32
7.3.160.0090.00616.46
7.3.120.0070.00714.84
7.3.110.0100.00315.02
7.3.100.0060.00614.68
7.3.90.0000.01114.98
7.3.80.0060.00614.72
7.3.70.0060.00314.74
7.3.60.0060.00614.86
7.3.50.0000.01614.40
7.3.40.0110.00314.78
7.3.30.0000.01215.02
7.3.20.0090.00616.73
7.3.10.0080.00516.52
7.3.00.0050.00616.62
7.2.330.0130.00316.57
7.2.320.0130.00716.71
7.2.310.0060.00916.46
7.2.300.0070.01016.47
7.2.290.0110.00716.67
7.2.250.0070.01014.93
7.2.240.0110.01115.00
7.2.230.0070.00715.27
7.2.220.0070.00715.07
7.2.210.0050.00514.97
7.2.200.0090.00614.96
7.2.190.0090.00015.00
7.2.180.0000.01115.12
7.2.170.0040.00815.04
7.2.130.0030.01016.76
7.2.120.0070.00716.57
7.2.110.0100.00716.76
7.2.100.0040.00716.52
7.2.90.0080.00316.62
7.2.80.0040.01216.85
7.2.70.0130.00717.06
7.2.60.0060.00516.82
7.2.50.0030.01016.44
7.2.40.0060.00316.58
7.2.30.0130.00316.81
7.2.20.0030.00716.73
7.2.10.0000.00916.63
7.2.00.0030.01118.14
7.1.330.0030.00916.03
7.1.320.0080.00016.02
7.1.310.0030.01015.81
7.1.300.0080.00615.74
7.1.290.0060.01015.49
7.1.280.0050.00515.86
7.1.270.0060.00615.52
7.1.260.0090.00315.68
7.1.250.0070.00715.75
7.1.200.0070.00415.68
7.1.100.0030.01018.07
7.1.70.0000.01017.34
7.1.60.0090.01519.44
7.1.50.0140.01017.14
7.1.00.0030.07722.51
7.0.200.0000.00916.79
7.0.60.0100.06319.82
7.0.50.0100.07317.90
7.0.40.0070.08720.51
7.0.30.0270.07720.09
7.0.20.0330.04720.08
7.0.10.0170.07719.96
7.0.00.0170.06320.08
5.6.280.0000.06021.02
5.6.210.0100.06320.51
5.6.200.0070.05318.19
5.6.190.0070.08320.36
5.6.180.0200.05020.35
5.6.170.0370.04720.37
5.6.160.0170.07320.32
5.6.150.0070.08318.16
5.6.140.0070.08318.19
5.6.130.0030.04318.22
5.6.120.0100.07321.12
5.6.110.0270.06721.11
5.6.100.0030.05021.10
5.6.90.0070.06720.97
5.6.80.0030.08020.32
5.5.350.0130.05720.41
5.5.340.0100.07717.91
5.5.330.0030.09020.38
5.5.320.0270.08720.34
5.5.310.0200.03720.29
5.5.300.0000.04317.92
5.5.290.0070.03717.92
5.5.280.0030.04020.96
5.5.270.0100.06320.86
5.5.260.0000.04320.79
5.5.250.0100.05320.79
5.5.240.3200.04320.25

preferences:
54.8 ms | 401 KiB | 5 Q