3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo(){ echo "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)
8.3.60.0150.00018.39
8.3.50.0100.00717.34
8.3.40.0150.00018.66
8.3.30.0120.00318.53
8.3.20.0050.00320.72
8.3.10.0060.00319.20
8.3.00.0000.00721.76
8.2.180.0140.00725.92
8.2.170.0100.00722.96
8.2.160.0070.00720.39
8.2.150.0080.00024.18
8.2.140.0090.00024.66
8.2.130.0070.00026.16
8.2.120.0040.00426.16
8.2.110.0030.00622.13
8.2.100.0060.00618.03
8.2.90.0050.00517.50
8.2.80.0080.00018.79
8.2.70.0060.00317.63
8.2.60.0040.00417.80
8.2.50.0030.00618.07
8.2.40.0000.00818.07
8.2.30.0000.00717.99
8.2.20.0040.00417.92
8.2.10.0070.00018.68
8.2.00.0030.00319.23
8.1.280.0100.00325.92
8.1.270.0050.00320.79
8.1.260.0000.00726.35
8.1.250.0070.00028.09
8.1.240.0090.00023.89
8.1.230.0040.00817.82
8.1.220.0040.00417.79
8.1.210.0050.00318.77
8.1.200.0060.00316.98
8.1.190.0030.00617.10
8.1.180.0050.00318.10
8.1.170.0030.00518.59
8.1.160.0000.00718.73
8.1.150.0000.00718.74
8.1.140.0030.00520.27
8.1.130.0000.00717.44
8.1.120.0000.00717.27
8.1.110.0070.00417.43
8.1.100.0070.00017.29
8.1.90.0090.00017.31
8.1.80.0000.00717.33
8.1.70.0030.00317.38
8.1.60.0040.00417.54
8.1.50.0080.00017.49
8.1.40.0050.00317.50
8.1.30.0050.00517.49
8.1.20.0050.00317.68
8.1.10.0080.00017.57
8.1.00.0000.00717.51
8.0.300.0040.00418.77
8.0.290.0000.00816.75
8.0.280.0030.00518.42
8.0.270.0080.00017.16
8.0.260.0000.00616.87
8.0.250.0000.00716.98
8.0.240.0030.00316.93
8.0.230.0030.00316.84
8.0.220.0000.00716.77
8.0.210.0030.00316.90
8.0.200.0060.00016.75
8.0.190.0080.00316.91
8.0.180.0110.00016.87
8.0.170.0040.00416.75
8.0.160.0030.00316.84
8.0.150.0070.00016.86
8.0.140.0070.00016.68
8.0.130.0000.00613.33
8.0.120.0000.00816.80
8.0.110.0070.00016.71
8.0.100.0040.00416.85
8.0.90.0040.00416.66
8.0.80.0040.01216.88
8.0.70.0000.00816.71
8.0.60.0040.00416.77
8.0.50.0070.00016.86
8.0.30.0060.01016.89
8.0.20.0110.00717.38
8.0.10.0000.00816.91
8.0.00.0100.00716.70
7.4.330.0000.00515.55
7.4.320.0000.00616.48
7.4.300.0060.00016.35
7.4.290.0030.00316.35
7.4.280.0000.00816.49
7.4.270.0000.00716.48
7.4.260.0000.00716.34
7.4.250.0000.00816.47
7.4.240.0000.00816.43
7.4.230.0030.00316.66
7.4.220.0030.00516.29
7.4.210.0090.00816.53
7.4.200.0000.00716.67
7.4.140.0120.00617.86
7.4.130.0120.00616.36
7.4.120.0120.00616.50
7.4.110.0110.00716.44
7.4.100.0160.00616.61
7.4.90.0070.01016.61
7.4.80.0140.00619.39
7.4.70.0080.00916.56
7.4.60.0090.00616.31
7.4.50.0120.00416.14
7.4.40.0120.00916.51
7.4.00.0030.01015.14
7.3.330.0050.00513.31
7.3.320.0050.00013.10
7.3.310.0000.00716.24
7.3.300.0040.00416.25
7.3.290.0000.00716.05
7.3.280.0140.00516.21
7.3.260.0100.00916.44
7.3.240.0090.00816.38
7.3.230.0140.00316.51
7.3.210.0040.01416.31
7.3.200.0080.01216.43
7.3.190.0130.00316.42
7.3.180.0090.01216.37
7.3.170.0160.00616.50
7.3.160.0070.01316.38
7.3.50.0210.00714.67
7.3.40.0140.01114.77
7.3.30.0030.00714.68
7.3.20.0100.00016.51
7.3.10.0100.00316.36
7.3.00.0120.01516.30
7.2.330.0060.01316.22
7.2.320.0130.00316.63
7.2.310.0070.01016.75
7.2.300.0030.01716.67
7.2.290.0130.00716.59
7.2.180.0110.01114.73
7.2.170.0100.01014.82
7.2.160.0110.01014.79
7.2.150.0110.01116.60
7.2.140.0040.00716.75
7.2.130.0150.00616.49
7.2.120.0080.00316.71
7.2.110.0050.00516.77
7.2.100.0070.01216.78
7.2.90.0100.01416.79
7.2.80.0100.01816.67
7.2.70.0080.00616.94
7.2.60.0100.00316.98
7.2.50.0030.01116.41
7.2.40.0100.01616.68
7.2.30.0140.00716.84
7.2.20.0060.00916.82
7.2.10.0150.00916.82
7.2.00.0110.00716.75
7.1.280.0040.00815.43
7.1.270.0050.00615.51
7.1.260.0080.00315.74
7.1.250.0000.01015.75

preferences:
31.58 ms | 401 KiB | 5 Q