3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = mb_strtolower(null); var_dump($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)
8.3.60.0160.00318.56
8.3.50.0090.00617.82
8.3.40.0090.00618.71
8.3.30.0070.01018.46
8.3.20.0040.00420.07
8.3.10.0040.00423.70
8.3.00.0040.00419.54
8.2.180.0190.00018.68
8.2.170.0090.00922.96
8.2.160.0040.01520.38
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0000.00826.16
8.2.120.0050.00321.05
8.2.110.0000.00920.47
8.2.100.0060.00617.84
8.2.90.0000.00917.84
8.2.80.0080.00020.48
8.2.70.0080.00017.90
8.2.60.0000.00918.04
8.2.50.0050.00218.16
8.2.40.0040.00420.59
8.2.30.0000.00819.28
8.2.20.0000.00818.02
8.2.10.0040.00417.98
8.2.00.0000.00718.17
8.1.280.0070.00725.92
8.1.270.0000.00820.34
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0000.00924.02
8.1.230.0040.00721.02
8.1.220.0080.00017.74
8.1.210.0040.00418.77
8.1.200.0040.00417.23
8.1.190.0030.00617.00
8.1.180.0030.00518.10
8.1.170.0040.00418.74
8.1.160.0000.00818.81
8.1.150.0070.00020.25
8.1.140.0040.00417.69
8.1.130.0000.00618.98
8.1.120.0000.00717.47
8.1.110.0050.00317.47
8.1.100.0050.00217.44
8.1.90.0040.00417.39
8.1.80.0040.00417.39
8.1.70.0030.00317.45
8.1.60.0050.00317.55
8.1.50.0000.00717.50
8.1.40.0080.00017.41
8.1.30.0040.00417.62
8.1.20.0000.00817.55
8.1.10.0100.00017.37
8.1.00.0000.00817.31
8.0.300.0030.00320.03
8.0.290.0070.00016.75
8.0.280.0030.00318.48
8.0.270.0000.00717.16
8.0.260.0000.00716.80
8.0.250.0040.00416.84
8.0.240.0030.00316.95
8.0.230.0030.00716.94
8.0.220.0000.00716.90
8.0.210.0030.00316.81
8.0.200.0030.00316.94
8.0.190.0070.00016.83
8.0.180.0000.00716.94
8.0.170.0000.00816.82
8.0.160.0000.00717.00
8.0.150.0040.00416.65
8.0.140.0000.00716.85
8.0.130.0060.00013.34
8.0.120.0050.00316.69
8.0.110.0000.00816.81
8.0.100.0000.00716.74
8.0.90.0000.00716.92
8.0.80.0220.00616.88
8.0.70.0080.00016.88
8.0.60.0030.00516.94
8.0.50.0000.00716.90
8.0.30.0120.00716.98
8.0.20.0090.01017.40
8.0.10.0000.00716.73
8.0.00.0130.00816.67
7.4.330.0000.00515.55
7.4.320.0000.00616.57
7.4.300.0000.00616.60
7.4.290.0070.00016.59
7.4.280.0070.00016.48
7.4.270.0050.00316.50
7.4.260.0000.00716.50
7.4.250.0070.00016.47
7.4.240.0040.00316.60
7.4.230.0000.00716.46
7.4.220.0040.00416.32
7.4.210.0080.00916.59
7.4.200.0000.00716.39
7.4.160.0100.00716.28
7.4.150.0140.00317.40
7.4.140.0100.00817.86
7.4.130.0110.00816.46
7.4.120.0100.00816.35
7.4.110.0070.01016.56
7.4.100.0070.01016.44
7.4.90.0110.01216.32
7.4.80.0160.00619.39
7.4.70.0130.00316.68
7.4.60.0100.01316.50
7.4.50.0090.00516.23
7.4.40.0160.00316.48
7.4.00.0000.01014.68
7.3.330.0030.00313.00
7.3.320.0030.00313.06
7.3.310.0030.00316.01
7.3.300.0000.00716.25
7.3.290.0060.01216.13
7.3.280.0120.00316.16
7.3.270.0040.01317.40
7.3.260.0050.01216.22
7.3.240.0110.00516.22
7.3.230.0070.01016.33
7.3.210.0120.00316.20
7.3.200.0080.00816.34
7.3.190.0130.00616.11
7.3.180.0110.00416.48
7.3.170.0060.01116.32
7.3.160.0090.00616.18
7.3.10.0120.00316.34
7.3.00.0090.00916.64
7.2.330.0100.00716.55
7.2.320.0090.00916.27
7.2.310.0110.00716.41
7.2.300.0070.01716.44
7.2.290.0030.01316.25
7.2.130.0120.00417.03
7.2.120.0040.01516.63
7.2.110.0070.01016.37
7.2.100.0270.01015.42
7.2.90.1460.01015.63
7.2.80.1180.00815.62
7.2.70.1150.00915.97
7.2.60.0930.00716.13
7.2.50.1480.00615.73
7.2.40.1100.00315.84
7.2.30.0300.00915.69
7.2.20.0270.01117.06
7.2.10.0230.00517.11
7.2.00.0070.00917.06
7.1.250.0140.00315.61
7.1.220.0160.00313.78
7.1.210.2050.00313.89
7.1.200.1080.00214.73
7.1.190.2090.00313.96
7.1.180.2340.00313.91
7.1.170.2850.00613.98
7.1.160.2930.01013.89
7.1.150.0080.00713.73
7.1.140.1190.00816.25
7.1.130.0060.01116.37
7.1.120.0220.00716.12
7.1.110.0420.00815.69
7.1.100.0590.01015.88
7.1.90.0140.00915.89
7.1.80.0100.00716.08
7.1.70.0110.00815.47
7.1.60.0260.01333.39
7.1.50.0270.01133.28
7.1.40.1350.01333.22
7.1.30.0820.01533.14
7.1.20.0480.00933.15
7.1.10.0290.00815.18
7.1.00.0080.01015.30
5.6.380.0090.00614.31

preferences:
58.01 ms | 401 KiB | 5 Q