3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo(){ return "Foo \n"; } $foo = 'foo'; var_dump($foo); // string(3) "foo" echo $foo(); // NULL. Why?

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)
8.3.60.0070.01018.18
8.3.50.0120.00716.42
8.3.40.0140.00718.60
8.3.30.0080.00818.68
8.3.20.0080.00020.65
8.3.10.0040.00419.02
8.3.00.0080.00021.92
8.2.180.0130.00725.92
8.2.170.0110.00422.96
8.2.160.0120.00320.39
8.2.150.0000.00824.18
8.2.140.0030.00624.66
8.2.130.0040.00426.16
8.2.120.0080.00026.16
8.2.110.0060.00321.94
8.2.100.0080.00417.78
8.2.90.0040.00422.34
8.2.80.0000.01117.97
8.2.70.0080.00017.68
8.2.60.0000.00817.97
8.2.50.0000.00719.39
8.2.40.0040.00419.30
8.2.30.0030.00519.30
8.2.20.0040.00318.04
8.2.10.0000.00818.79
8.2.00.0030.00319.27
8.1.280.0120.00325.92
8.1.270.0000.00820.74
8.1.260.0050.00226.35
8.1.250.0040.00428.09
8.1.240.0060.00322.54
8.1.230.0040.00720.91
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0000.00817.23
8.1.190.0040.00417.10
8.1.180.0040.00418.10
8.1.170.0000.00818.39
8.1.160.0040.00418.76
8.1.150.0000.00718.86
8.1.140.0000.00820.16
8.1.130.0000.00720.12
8.1.120.0030.00317.36
8.1.110.0000.01117.40
8.1.100.0040.00417.41
8.1.90.0060.00317.37
8.1.80.0030.00617.32
8.1.70.0040.00417.27
8.1.60.0060.00317.61
8.1.50.0030.00617.49
8.1.40.0080.00017.39
8.1.30.0000.01117.57
8.1.20.0070.00017.53
8.1.10.0040.00417.61
8.1.00.0000.00717.41
8.0.300.0080.00019.96
8.0.290.0040.00416.75
8.0.280.0040.00418.45
8.0.270.0060.00317.19
8.0.260.0000.00618.43
8.0.250.0030.00316.86
8.0.240.0000.00716.88
8.0.230.0030.00316.86
8.0.220.0030.00516.84
8.0.210.0000.00716.82
8.0.200.0030.00316.92
8.0.190.0110.00016.93
8.0.180.0030.00616.85
8.0.170.0040.00416.89
8.0.160.0040.00416.69
8.0.150.0000.00716.68
8.0.140.0000.00716.81
8.0.130.0040.00313.35
8.0.120.0000.00716.81
8.0.110.0050.00216.83
8.0.100.0040.00416.88
8.0.90.0000.00716.83
8.0.80.0110.00316.77
8.0.70.0000.00716.69
8.0.60.0000.00716.79
8.0.50.0000.00716.71
8.0.30.0110.01117.07
8.0.20.0120.00616.82
8.0.10.0040.00417.06
8.0.00.0080.01016.65
7.4.330.0000.00515.55
7.4.320.0000.00716.44
7.4.300.0000.00716.52
7.4.290.0030.00316.55
7.4.280.0050.00316.39
7.4.270.0000.00716.62
7.4.260.0050.00216.57
7.4.250.0090.00016.47
7.4.240.0070.00016.46
7.4.230.0030.00316.62
7.4.220.0030.00516.40
7.4.210.0060.01116.48
7.4.200.0000.00816.67
7.4.140.0100.00617.86
7.4.130.0150.00416.51
7.4.120.0070.01016.41
7.4.110.0060.01516.52
7.4.100.0130.00416.38
7.4.90.0110.00716.59
7.4.80.0060.01519.39
7.4.70.0080.00816.68
7.4.60.0080.00816.67
7.4.50.0070.01116.39
7.4.40.0130.00516.52
7.4.00.0140.00014.86
7.3.330.0040.00413.19
7.3.320.0030.00313.31
7.3.310.0000.00716.25
7.3.300.0000.00816.24
7.3.290.0060.00816.20
7.3.280.0090.00916.17
7.3.260.0090.00916.46
7.3.240.0050.01016.44
7.3.230.0070.01016.41
7.3.210.0160.00016.20
7.3.200.0140.00416.16
7.3.190.0160.00016.22
7.3.180.0130.00316.60
7.3.170.0120.00616.46
7.3.160.0170.00016.46
7.3.50.0110.00014.91
7.3.40.0040.00814.55
7.3.30.0060.01214.71
7.3.20.0100.01016.62
7.3.10.0030.01216.37
7.3.00.0140.00416.70
7.2.330.0110.00616.55
7.2.320.0090.00916.71
7.2.310.0160.00016.37
7.2.300.0120.00916.33
7.2.290.0060.01016.38
7.2.180.0090.01214.98
7.2.170.0040.00714.96
7.2.160.0150.00614.62
7.2.150.0090.01216.91
7.2.140.0040.00716.80
7.2.130.0130.00916.52
7.2.120.0120.00316.70
7.2.110.0080.00416.80
7.2.100.0120.00616.83
7.2.90.0130.00016.77
7.2.80.0140.00816.81
7.2.70.0060.01116.75
7.2.60.0070.00316.79
7.2.50.0080.00616.80
7.2.40.0090.00416.75
7.2.30.0090.00316.97
7.2.20.0060.01216.59
7.2.10.0060.00516.58
7.2.00.0030.01016.82
7.1.280.0000.01015.73
7.1.270.0130.00015.65
7.1.260.0090.00315.67
7.1.250.0070.00715.68

preferences:
68.33 ms | 401 KiB | 5 Q