3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo(){ return "Foo \n"; } $foo = 'foo'; var_dump($foo); // string(3) "foo" var_dump($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)
8.3.60.0040.01118.43
8.3.50.0100.00716.56
8.3.40.0170.00318.85
8.3.30.0030.01318.46
8.3.20.0070.00020.85
8.3.10.0000.00818.93
8.3.00.0000.00821.92
8.2.180.0120.00325.92
8.2.170.0070.00722.96
8.2.160.0140.00020.52
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0080.00019.13
8.2.110.0090.00022.11
8.2.100.0080.00417.68
8.2.90.0000.00922.20
8.2.80.0030.00617.97
8.2.70.0000.00817.78
8.2.60.0030.00618.16
8.2.50.0000.00719.14
8.2.40.0070.00019.16
8.2.30.0000.00719.19
8.2.20.0000.00718.11
8.2.10.0040.00418.87
8.2.00.0040.00419.32
8.1.270.0030.00623.84
8.1.260.0080.00026.35
8.1.250.0000.00728.09
8.1.240.0040.00720.48
8.1.230.0060.00620.90
8.1.220.0040.00417.74
8.1.210.0040.00418.84
8.1.200.0030.00517.10
8.1.190.0080.00017.25
8.1.180.0080.00018.10
8.1.170.0040.00418.52
8.1.160.0040.00418.67
8.1.150.0030.00418.82
8.1.140.0040.00420.27
8.1.130.0030.00319.92
8.1.120.0000.00717.29
8.1.110.0080.00317.36
8.1.100.0040.00417.38
8.1.90.0070.00317.38
8.1.80.0000.00717.30
8.1.70.0040.00417.31
8.1.60.0000.00917.63
8.1.50.0000.00717.52
8.1.40.0030.00617.44
8.1.30.0000.01017.65
8.1.20.0040.00417.61
8.1.10.0070.00017.38
8.1.00.0000.00717.38
8.0.300.0040.00419.89
8.0.290.0040.00416.63
8.0.280.0070.00018.29
8.0.270.0040.00417.10
8.0.260.0030.00318.24
8.0.250.0030.00316.91
8.0.240.0030.00316.88
8.0.230.0000.00716.93
8.0.220.0000.00716.78
8.0.210.0070.00016.79
8.0.200.0040.00416.82
8.0.190.0040.00416.79
8.0.180.0070.00316.71
8.0.170.0000.01016.85
8.0.160.0000.00716.85
8.0.150.0050.00316.66
8.0.140.0030.00416.72
8.0.130.0000.00713.30
8.0.120.0000.00716.83
8.0.110.0000.00816.84
8.0.100.0000.00816.79
8.0.90.0030.00316.85
8.0.80.0090.01316.89
8.0.70.0030.00516.89
8.0.60.0000.00716.72
8.0.50.0070.00016.82
8.0.30.0090.00916.87
8.0.20.0080.01217.00
8.0.10.0000.00716.94
8.0.00.0120.00516.80
7.4.330.0050.00015.55
7.4.320.0060.00016.50
7.4.300.0000.00716.54
7.4.290.0110.00016.42
7.4.280.0050.00216.49
7.4.270.0040.00416.59
7.4.260.0000.00716.38
7.4.250.0040.00416.46
7.4.240.0040.00416.52
7.4.230.0000.00716.39
7.4.220.0020.00516.67
7.4.210.0080.01016.64
7.4.200.0000.00716.43
7.4.160.0120.00716.42
7.4.140.0090.00917.86
7.4.130.0100.00716.36
7.4.120.0110.00616.54
7.4.110.0070.01016.45
7.4.100.0060.01216.40
7.4.90.0070.01016.42
7.4.80.0140.00919.39
7.4.70.0140.00316.51
7.4.60.0050.01016.41
7.4.50.0040.00816.42
7.4.40.0070.01516.54
7.4.00.0100.00814.79
7.3.330.0060.00213.20
7.3.320.0000.00613.01
7.3.310.0000.00716.13
7.3.300.0000.00816.10
7.3.290.0050.00216.11
7.3.280.0060.01016.24
7.3.260.0100.00816.35
7.3.240.0090.00816.40
7.3.230.0120.00416.32
7.3.210.0060.01216.59
7.3.200.0030.01716.17
7.3.190.0120.00616.42
7.3.180.0000.01516.39
7.3.170.0040.01216.21
7.3.160.0190.00316.35
7.3.120.0070.01114.80
7.3.110.0090.00915.00
7.3.100.0000.01514.75
7.3.90.0040.01114.45
7.3.80.0060.00315.08
7.3.70.0070.00714.50
7.3.60.0110.00314.60
7.3.50.0080.00414.71
7.3.40.0060.01214.64
7.3.30.0090.00914.54
7.3.20.0110.01016.70
7.3.10.0080.00616.39
7.3.00.0080.00816.57
7.2.330.0150.00316.22
7.2.320.0060.01016.33
7.2.310.0030.01316.16
7.2.300.0160.00616.44
7.2.290.0120.00616.28
7.2.250.0030.01614.66
7.2.240.0110.00714.88
7.2.230.0000.01415.09
7.2.220.0090.00315.11
7.2.210.0030.00714.78
7.2.200.0040.01114.69
7.2.190.0060.00615.05
7.2.180.0070.01014.92
7.2.170.0080.00814.80
7.2.160.0110.01414.72
7.2.150.0090.00516.72
7.2.140.0200.00016.73
7.2.130.0100.01116.69
7.2.120.0070.01516.46
7.2.110.0170.00716.79
7.2.100.0200.00916.70
7.2.90.0110.01116.89
7.2.80.0070.00716.81
7.2.70.0080.01316.72
7.2.60.0070.00716.82
7.2.50.0170.00316.44
7.2.40.0100.00516.55
7.2.30.0110.01516.62
7.2.20.0130.00316.83
7.2.10.0150.01116.81
7.2.00.0070.01416.52
7.1.330.0090.00315.93
7.1.320.0040.00415.86
7.1.310.0030.01015.88
7.1.300.0070.00715.77
7.1.290.0110.00315.64
7.1.280.0090.00715.73
7.1.270.0110.01115.68
7.1.260.0110.00715.64
7.1.250.0060.00615.86

preferences:
67.78 ms | 400 KiB | 5 Q