3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = null; var_dump($a); var_dump(isset($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)
8.3.60.0180.00018.42
8.3.50.0040.01416.38
8.3.40.0120.00318.63
8.3.30.0040.01118.58
8.3.20.0060.00321.90
8.3.10.0030.00523.59
8.3.00.0040.00423.66
8.2.180.0070.01118.15
8.2.170.0160.00022.96
8.2.160.0040.01120.08
8.2.150.0060.00324.18
8.2.140.0000.00824.66
8.2.130.0000.00820.65
8.2.120.0000.00726.35
8.2.110.0060.00319.37
8.2.100.0080.00417.78
8.2.90.0080.00019.36
8.2.80.0070.00018.03
8.2.70.0040.00417.65
8.2.60.0060.00317.50
8.2.50.0070.00018.10
8.2.40.0000.00820.45
8.2.30.0040.00420.61
8.2.20.0000.00718.05
8.2.10.0070.00018.05
8.2.00.0040.00418.05
8.1.280.0060.01025.92
8.1.270.0080.00022.02
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0120.00022.00
8.1.230.0080.00422.74
8.1.220.0050.00317.74
8.1.210.0050.00818.77
8.1.200.0040.00417.23
8.1.190.0040.00417.23
8.1.180.0000.00818.10
8.1.170.0000.00918.57
8.1.160.0040.00418.82
8.1.150.0000.00720.26
8.1.140.0000.00817.63
8.1.130.0080.00018.95
8.1.120.0040.00417.37
8.1.110.0050.00217.36
8.1.100.0070.00017.38
8.1.90.0070.00317.28
8.1.80.0040.00417.31
8.1.70.0030.00717.34
8.1.60.0040.00417.52
8.1.50.0000.00917.34
8.1.40.0000.00717.34
8.1.30.0000.00817.54
8.1.20.0040.00417.55
8.1.10.0030.00517.46
8.1.00.0040.00417.37
8.0.300.0000.00819.98
8.0.290.0070.00016.58
8.0.280.0040.00418.22
8.0.270.0000.00717.19
8.0.260.0000.00716.70
8.0.250.0030.00616.94
8.0.240.0070.00016.92
8.0.230.0070.00016.77
8.0.220.0000.00716.81
8.0.210.0070.00016.77
8.0.200.0030.00316.88
8.0.190.0000.00816.86
8.0.180.0040.00416.80
8.0.170.0030.00616.72
8.0.160.0000.00716.81
8.0.150.0030.00316.62
8.0.140.0070.00016.62
8.0.130.0030.00313.34
8.0.120.0070.00016.78
8.0.110.0030.00516.77
8.0.100.0070.00016.84
8.0.90.0000.00716.89
8.0.80.0100.00416.87
8.0.70.0050.00316.68
8.0.60.0000.00716.77
8.0.50.0070.00016.79
8.0.30.0120.00716.95
8.0.20.0120.01017.40
8.0.10.0040.00416.78
8.0.00.0080.01316.71
7.4.330.0050.00015.55
7.4.320.0000.00816.36
7.4.300.0000.00616.43
7.4.290.0030.00316.48
7.4.280.0040.00416.44
7.4.270.0040.00416.52
7.4.260.0000.00716.46
7.4.250.0000.00816.41
7.4.240.0070.00016.34
7.4.230.0000.00716.55
7.4.220.0000.00716.33
7.4.210.0130.00616.51
7.4.200.0000.00716.52
7.4.160.0090.00716.56
7.4.140.0120.00617.86
7.4.130.0120.00616.36
7.4.120.0110.00716.37
7.4.110.0100.00716.34
7.4.100.0070.01516.30
7.4.90.0030.01316.34
7.4.80.0070.01619.39
7.4.70.0110.01116.22
7.4.60.0070.01016.28
7.4.50.0060.00916.35
7.4.40.0100.00716.20
7.4.00.0080.00814.98
7.3.330.0050.00012.88
7.3.320.0000.00613.06
7.3.310.0070.00016.09
7.3.300.0000.00716.17
7.3.290.0050.01016.15
7.3.280.0120.00616.22
7.3.260.0120.01116.20
7.3.250.0110.00616.33
7.3.240.0100.00816.19
7.3.230.0200.00016.35
7.3.210.0090.00616.09
7.3.200.0070.01016.41
7.3.190.0060.00916.39
7.3.180.0040.01116.21
7.3.170.0120.00916.14
7.3.160.0130.00316.23
7.3.10.0120.00616.46
7.3.00.0090.00816.54
7.2.330.0190.00316.56
7.2.320.0120.01016.24
7.2.310.0130.00316.33
7.2.300.0090.00916.43
7.2.290.0180.00316.39
7.2.130.0050.00816.68
7.2.120.0080.01016.61
7.2.110.0090.00816.86
7.2.100.0100.00716.71
7.2.90.0030.01116.74
7.2.80.0030.00816.73
7.2.70.0050.00916.94
7.2.60.0030.00916.77
7.2.50.0050.00616.79
7.2.40.0060.00316.79
7.2.30.0070.00717.75
7.2.20.0080.00817.55
7.2.10.0040.01217.71
7.2.00.0080.00817.74
7.1.250.0140.00515.77
7.1.240.0030.00715.90
7.1.230.0090.00415.70
7.1.220.0090.00615.58
7.1.210.0030.00915.53
7.1.200.0060.00615.69
7.1.190.0060.00315.83
7.1.180.0040.00815.57
7.1.170.0070.00715.80
7.1.160.0030.00615.65
7.1.150.0080.00817.20
7.1.140.0060.01117.08
7.1.130.0060.00917.26
7.1.120.0060.00817.24
7.1.110.0110.00516.85
7.1.100.0080.01116.87
7.1.90.0070.00916.89
7.1.80.0060.00916.83
7.1.70.0110.00716.40
7.1.60.0170.00925.13
7.1.50.0180.00825.28
7.1.40.0210.01124.97
7.1.30.0140.01125.02
7.1.20.0120.01325.07
7.1.10.0050.01016.07
7.1.00.0080.00616.14
7.0.330.0100.00315.43
5.6.380.0030.01014.06

preferences:
65.93 ms | 401 KiB | 5 Q