3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = [1,2,3,4,5,6,7,8,9]; foreach ($a as $key => $value) { if ($key === 4) { unset($a[$key]); var_dump(key($a)); break; } } var_dump(key($a));

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)
8.3.60.0090.00916.63
8.3.50.0110.00416.48
8.3.40.0110.00418.70
8.3.30.0090.00618.47
8.3.20.0040.00420.39
8.3.10.0040.00421.89
8.3.00.0080.00019.68
8.2.180.0040.01118.25
8.2.170.0070.00722.96
8.2.160.0110.00420.43
8.2.150.0070.01124.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0060.00317.75
8.2.110.0050.00521.00
8.2.100.0120.00017.63
8.2.90.0070.00519.17
8.2.80.0040.00417.97
8.2.70.0060.00317.63
8.2.60.0000.00918.05
8.2.50.0000.01118.07
8.2.40.0060.00321.06
8.2.30.0050.00319.84
8.2.20.0070.00017.68
8.2.10.0040.00418.03
8.2.00.0030.00518.04
8.1.280.0110.00425.92
8.1.270.0040.01520.38
8.1.260.0000.00726.35
8.1.250.0070.00028.09
8.1.240.0080.00017.83
8.1.230.0060.00717.48
8.1.220.0050.00317.76
8.1.210.0040.00418.77
8.1.200.0000.00817.35
8.1.190.0040.00417.21
8.1.180.0040.00418.10
8.1.170.0000.00818.49
8.1.160.0030.00321.92
8.1.150.0040.00418.88
8.1.140.0000.00817.33
8.1.130.0040.00417.70
8.1.120.0000.00717.48
8.1.110.0040.00417.39
8.1.100.0020.00517.46
8.1.90.0000.00717.47
8.1.80.0000.00817.44
8.1.70.0030.00317.38
8.1.60.0030.00617.56
8.1.50.0030.00617.55
8.1.40.0040.00417.54
8.1.30.0000.00817.64
8.1.20.0000.00817.48
8.1.10.0000.00717.39
8.1.00.0040.00417.39
8.0.300.0080.00018.77
8.0.290.0040.00416.75
8.0.280.0000.00718.31
8.0.270.0040.00417.24
8.0.260.0060.00018.45
8.0.250.0040.00416.86
8.0.240.0070.00016.80
8.0.230.0070.00016.86
8.0.220.0030.00316.91
8.0.210.0000.00716.76
8.0.200.0030.00316.86
8.0.190.0040.00416.98
8.0.180.0000.00716.92
8.0.170.0000.00816.91
8.0.160.0030.00416.80
8.0.150.0030.00316.92
8.0.140.0070.00016.83
8.0.130.0000.00513.24
8.0.120.0050.00316.80
8.0.110.0070.00016.88
8.0.100.0030.00516.95
8.0.90.0050.00316.71
8.0.80.0090.01316.95
8.0.70.0000.00716.66
8.0.60.0040.00416.79
8.0.50.0040.00416.68
8.0.30.0100.00616.95
8.0.20.0090.00817.40
8.0.10.0000.00717.02
8.0.00.0080.01016.90
7.4.330.0030.00315.08
7.4.320.0030.00316.51
7.4.300.0000.00616.51
7.4.290.0040.00416.43
7.4.280.0050.00516.50
7.4.270.0000.00716.62
7.4.260.0070.00016.44
7.4.250.0050.00216.57
7.4.240.0050.00216.55
7.4.230.0000.00716.49
7.4.220.0090.00916.52
7.4.210.0050.01116.58
7.4.200.0000.00816.49
7.4.160.0060.01016.51
7.4.150.0220.00317.40
7.4.140.0080.01117.86
7.4.130.0100.01016.49
7.4.120.0100.00816.52
7.4.110.0080.00816.35
7.4.100.0040.01216.45
7.4.90.0130.00316.52
7.4.80.0160.00319.39
7.4.70.0070.01016.52
7.4.60.0090.00616.36
7.4.50.0040.00416.54
7.4.40.0090.00916.55
7.4.30.0200.00316.55
7.4.00.0080.00615.13
7.3.330.0000.00513.23
7.3.320.0000.00513.26
7.3.310.0020.00516.26
7.3.300.0030.00316.31
7.3.290.0030.00316.34
7.3.280.0070.00916.29
7.3.270.0130.01017.40
7.3.260.0140.00316.44
7.3.250.0100.00916.49
7.3.240.0110.00716.55
7.3.230.0120.00916.46
7.3.210.0090.00916.42
7.3.200.0070.01416.56
7.3.190.0060.01416.30
7.3.180.0040.01216.38
7.3.170.0000.01516.45
7.3.160.0090.01216.34
7.2.330.0090.00816.68
7.2.320.0140.00716.69
7.2.310.0120.00316.43
7.2.300.0100.01016.67
7.2.290.0110.00616.38
7.2.60.0120.00016.77
7.2.00.0040.01419.62
7.1.200.0030.00915.88
7.1.100.0080.00818.30
7.1.70.0030.01016.95
7.1.60.0140.01020.03
7.1.50.0070.01317.04
7.1.00.0100.07022.35
7.0.200.0230.00814.85
7.0.60.0000.05019.94
7.0.50.0070.03717.91
7.0.40.0100.06320.30
7.0.30.0270.04320.05
7.0.20.0200.08320.20
7.0.10.0230.08720.12
7.0.00.0100.05720.20
5.6.280.0070.07020.90
5.6.210.0170.06020.74
5.6.200.0130.07018.18
5.6.190.0030.05020.39
5.6.180.0100.06320.67
5.6.170.0270.04720.51
5.6.160.0030.08720.49
5.6.150.0170.07718.10
5.6.140.0070.08318.14
5.6.130.0170.07718.11
5.6.120.0070.08321.06
5.6.110.0030.04020.97
5.6.100.0000.05320.97
5.6.90.0170.05321.07
5.6.80.0100.03020.40
5.6.70.4300.04020.38
5.5.350.0000.08320.36
5.5.340.0070.08017.92
5.5.330.0030.05320.15
5.5.320.0330.07020.28
5.5.310.0270.06320.28
5.5.300.0070.05317.98
5.5.290.0070.08317.95
5.5.280.0000.05020.79
5.5.270.0100.08020.75
5.5.260.0170.07320.97
5.5.250.0130.07720.71
5.5.240.0100.07020.23
5.4.450.0500.06319.51
5.4.440.0530.06019.63
5.4.430.0700.05019.25
5.4.420.0530.06319.46
5.4.410.0600.05019.50
5.4.400.0600.05319.11
5.4.390.0530.06319.11
5.4.380.0570.05018.91
5.4.370.0700.05019.28
5.4.360.0570.05318.80
5.4.350.0600.05318.95
5.4.340.0600.06018.96
5.4.320.0600.05318.95
5.4.310.0700.06019.08
5.4.300.0700.05019.30
5.4.290.0600.05318.91
5.4.280.0600.05718.95
5.4.270.0570.06318.82
5.4.260.0700.05719.18
5.4.250.0500.05719.07
5.4.240.0570.05719.29
5.4.230.0670.05019.28
5.4.220.0500.06019.09
5.4.210.0600.05718.77
5.4.200.0600.06019.11
5.4.190.0530.05318.79
5.4.180.0570.05018.91
5.4.170.0630.05019.27
5.4.160.0630.06718.92
5.4.150.0500.08018.90
5.4.140.0670.05016.27
5.4.130.0570.05716.23
5.4.120.0630.04716.23
5.4.110.0730.05016.18
5.4.100.0500.05716.54
5.4.90.0500.05316.45
5.4.80.0430.05316.02
5.4.70.0030.04316.32
5.4.60.0030.07016.40
5.4.50.0030.03316.16
5.4.40.0070.05316.36
5.4.30.0330.06716.36
5.4.20.0230.05316.36
5.4.10.0000.07016.31

preferences:
52.28 ms | 400 KiB | 5 Q