3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['a' => NULL]; var_dump(empty($a['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)
8.3.60.0140.00716.50
8.3.50.0100.01016.24
8.3.40.0120.00418.57
8.3.30.0070.00718.54
8.3.20.0040.00420.21
8.3.10.0060.00321.53
8.3.00.0050.01021.92
8.2.180.0080.00816.63
8.2.170.0120.00322.96
8.2.160.0140.00020.81
8.2.150.0080.00024.18
8.2.140.0060.00324.66
8.2.130.0070.00021.00
8.2.120.0080.00026.35
8.2.110.0030.00720.97
8.2.100.0110.00017.91
8.2.90.0040.00419.13
8.2.80.0030.00517.97
8.2.70.0040.00717.50
8.2.60.0040.00417.78
8.2.50.0050.00318.10
8.2.40.0040.00420.54
8.2.30.0000.00721.03
8.2.20.0050.00318.03
8.2.10.0020.00517.98
8.2.00.0040.00417.97
8.1.280.0070.01425.92
8.1.270.0040.00422.15
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0050.00323.87
8.1.230.0070.00419.10
8.1.220.0050.00317.74
8.1.210.0000.00818.77
8.1.200.0040.00417.23
8.1.190.0000.00817.10
8.1.180.0000.00718.10
8.1.170.0050.00318.48
8.1.160.0000.00719.00
8.1.150.0000.00720.62
8.1.140.0070.00019.61
8.1.130.0030.00318.80
8.1.120.0000.00817.39
8.1.110.0050.00317.37
8.1.100.0000.00717.38
8.1.90.0030.00317.30
8.1.80.0000.00717.42
8.1.70.0030.00317.29
8.1.60.0040.00417.52
8.1.50.0030.00517.39
8.1.40.0040.00417.46
8.1.30.0040.00417.51
8.1.20.0040.00417.47
8.1.10.0000.00817.46
8.1.00.0040.00417.30
8.0.300.0000.00718.77
8.0.290.0040.00416.58
8.0.280.0030.00518.25
8.0.270.0040.00417.05
8.0.260.0060.00316.74
8.0.250.0030.00316.86
8.0.240.0000.00816.84
8.0.230.0030.00316.88
8.0.220.0000.00716.74
8.0.210.0030.00316.73
8.0.200.0000.00716.84
8.0.190.0090.00016.90
8.0.180.0000.00816.82
8.0.170.0030.00516.77
8.0.160.0040.00416.91
8.0.150.0000.00716.83
8.0.140.0030.00516.76
8.0.130.0000.00913.21
8.0.120.0070.00016.69
8.0.110.0000.00816.88
8.0.100.0020.00516.81
8.0.90.0050.00316.86
8.0.80.0100.00816.86
8.0.70.0040.00416.65
8.0.60.0000.00716.79
8.0.50.0070.00016.82
8.0.30.0150.00317.07
8.0.20.0120.01017.40
8.0.10.0030.00416.75
8.0.00.0100.01016.81
7.4.330.0060.00015.55
7.4.320.0000.00616.50
7.4.300.0000.00616.33
7.4.290.0070.00016.46
7.4.280.0050.00316.47
7.4.270.0000.00716.35
7.4.260.0070.00016.53
7.4.250.0030.00316.48
7.4.240.0030.00316.44
7.4.230.0040.00416.55
7.4.220.0090.00916.53
7.4.210.0100.00316.30
7.4.200.0030.00316.62
7.4.160.0140.00516.42
7.4.150.0090.00917.40
7.4.140.0040.01317.86
7.4.130.0060.01216.41
7.4.120.0040.01716.43
7.4.110.0060.01116.48
7.4.100.0170.00316.48
7.4.90.0080.00816.35
7.4.80.0100.00719.39
7.4.70.0060.00916.46
7.4.60.0130.00316.43
7.4.50.0030.01416.48
7.4.40.0070.01316.39
7.4.30.0090.00616.48
7.4.00.0000.01414.75
7.3.330.0000.00612.99
7.3.320.0000.00513.03
7.3.310.0000.00716.00
7.3.300.0050.00216.22
7.3.290.0050.01116.19
7.3.280.0090.00716.20
7.3.270.0070.01317.40
7.3.260.0120.00516.22
7.3.250.0130.00516.30
7.3.240.0120.00616.33
7.3.230.0030.01316.41
7.3.210.0080.00816.12
7.3.200.0130.00316.12
7.3.190.0110.01416.30
7.3.180.0130.00316.08
7.3.170.0030.01316.16
7.3.160.0030.01216.32
7.2.330.0040.01316.66
7.2.320.0080.00916.41
7.2.310.0070.01116.57
7.2.300.0130.00316.25
7.2.290.0110.00816.24
7.2.110.0090.00816.42
7.2.60.0040.00816.79
7.2.00.0080.00819.32
7.1.200.0070.00415.67
7.1.100.0030.00517.91
7.1.70.0070.01017.01
7.1.60.0290.02234.69
7.1.50.0320.01934.76
7.1.40.0420.00634.29
7.1.30.0220.01234.25
7.1.20.0260.01634.23
7.1.10.0080.01116.39
7.1.00.0060.01616.75
7.0.200.0140.00816.40
7.0.190.0080.01016.61
7.0.180.0060.01416.07
7.0.170.0060.01216.02
7.0.160.0040.01516.07
7.0.150.0060.01216.02
7.0.140.0000.02016.05
7.0.130.0030.01416.26
7.0.120.0080.01216.55
7.0.110.0080.01416.07
7.0.100.0080.02116.19
7.0.90.0120.00616.14
7.0.80.0140.00616.27
7.0.70.0070.01316.04
7.0.60.0100.01015.88
7.0.50.0110.00816.23
7.0.40.0020.00616.12
7.0.30.0140.00816.42
7.0.20.0100.00916.18
7.0.10.0060.01216.36
7.0.00.0000.01816.36

preferences:
31.49 ms | 401 KiB | 5 Q