3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo() { function bar() { echo "surprise!\n"; } } var_dump(function_exists('bar')); foo(); var_dump(function_exists('bar'));

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)
8.3.60.0150.00416.63
8.3.50.0140.00716.49
8.3.40.0110.00418.40
8.3.30.0040.01118.55
8.3.20.0050.00318.70
8.3.10.0070.00021.66
8.3.00.0040.00420.79
8.2.180.0070.01116.38
8.2.170.0100.00722.96
8.2.160.0140.00019.21
8.2.150.0000.00724.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00419.52
8.2.110.0050.00519.27
8.2.100.0080.00317.91
8.2.90.0040.00419.08
8.2.80.0080.00017.97
8.2.70.0040.00817.48
8.2.60.0000.00917.91
8.2.50.0040.00418.10
8.2.40.0040.00422.27
8.2.30.0040.00420.68
8.2.20.0030.00517.53
8.2.10.0060.00318.04
8.2.00.0000.00917.86
8.1.280.0040.01125.92
8.1.270.0080.00023.92
8.1.260.0000.00826.35
8.1.250.0070.00028.09
8.1.240.0040.00422.11
8.1.230.0060.00617.42
8.1.220.0030.00717.74
8.1.210.0000.00818.77
8.1.200.0050.00517.21
8.1.190.0080.00017.13
8.1.180.0040.00418.10
8.1.170.0080.00018.35
8.1.160.0040.00418.95
8.1.150.0050.00218.87
8.1.140.0050.00219.40
8.1.130.0030.00317.50
8.1.120.0080.00017.37
8.1.110.0000.00717.36
8.1.100.0040.00417.35
8.1.90.0020.00517.34
8.1.80.0000.00717.44
8.1.70.0030.00317.37
8.1.60.0000.00717.39
8.1.50.0040.00417.44
8.1.40.0040.00417.32
8.1.30.0050.00317.62
8.1.20.0040.00417.49
8.1.10.0040.00417.29
8.1.00.0040.00417.19
8.0.300.0040.00418.77
8.0.290.0030.00616.63
8.0.280.0040.00418.26
8.0.270.0070.00017.07
8.0.260.0000.00617.18
8.0.250.0000.00716.84
8.0.240.0000.00716.85
8.0.230.0000.00716.90
8.0.220.0030.00516.77
8.0.210.0040.00416.83
8.0.200.0060.00616.74
8.0.190.0000.00716.84
8.0.180.0040.00416.74
8.0.170.0040.00416.83
8.0.160.0000.00716.84
8.0.150.0000.00716.73
8.0.140.0070.00016.79
8.0.130.0050.00013.31
8.0.120.0040.00416.79
8.0.110.0000.00716.75
8.0.100.0040.00416.81
8.0.90.0000.00716.62
8.0.80.0060.01016.80
8.0.70.0030.00516.78
8.0.60.0060.00316.68
8.0.50.0030.00516.71
8.0.30.0100.00717.05
8.0.20.0100.00917.40
8.0.10.0000.00716.76
8.0.00.0100.01016.60
7.4.330.0030.00315.08
7.4.320.0030.00316.38
7.4.300.0000.00616.42
7.4.290.0000.00816.52
7.4.280.0070.00016.43
7.4.270.0000.00716.48
7.4.260.0090.00316.45
7.4.250.0000.00716.41
7.4.240.0030.00316.36
7.4.230.0000.00716.50
7.4.220.0070.01116.52
7.4.210.0100.00316.50
7.4.200.0000.00716.41
7.4.160.0030.01216.26
7.4.150.0030.01317.40
7.4.140.0050.01417.86
7.4.130.0100.00916.45
7.4.120.0100.00816.42
7.4.110.0040.01716.48
7.4.100.0140.00316.40
7.4.90.0110.00616.65
7.4.80.0120.00819.39
7.4.70.0060.01616.31
7.4.60.0100.00716.43
7.4.50.0150.00316.18
7.4.40.0100.00716.57
7.4.30.0150.00616.40
7.4.00.0120.00514.68
7.3.330.0050.00013.23
7.3.320.0050.00013.10
7.3.310.0070.00016.25
7.3.300.0040.00416.15
7.3.290.0110.00916.19
7.3.280.0080.00816.24
7.3.270.0070.01117.40
7.3.260.0140.00316.42
7.3.250.0110.00816.31
7.3.240.0140.00416.45
7.3.230.0120.00416.42
7.3.210.0080.00916.51
7.3.200.0100.01016.17
7.3.190.0250.02516.38
7.3.180.0090.00616.52
7.3.170.0130.00316.15
7.3.160.0060.01216.39
7.3.120.0070.01014.95
7.3.110.0030.01614.74
7.3.100.0000.01414.90
7.3.90.0040.00714.68
7.3.80.0140.00314.83
7.3.70.0110.00314.77
7.3.60.0000.01414.68
7.3.50.0040.00814.61
7.3.40.0090.00014.83
7.3.30.0000.00814.90
7.3.20.0070.00716.46
7.3.10.0070.00716.67
7.3.00.0020.01316.58
7.2.330.0100.00716.31
7.2.320.0070.01116.72
7.2.310.0030.01316.29
7.2.300.0130.00316.30
7.2.290.0060.01016.67
7.2.250.0090.00615.12
7.2.240.0100.01015.10
7.2.230.0000.01814.86
7.2.220.0070.00714.79
7.2.210.0080.00315.04
7.2.200.0040.01115.09
7.2.190.0100.00314.84
7.2.180.0100.00714.69
7.2.170.0030.01014.80
7.2.130.0060.00916.85
7.2.120.0040.00716.58
7.2.110.0070.00316.84
7.2.100.0060.00616.82
7.2.90.0080.00816.83
7.2.80.0090.00317.02
7.2.70.0030.01216.82
7.2.60.0070.00916.60
7.2.50.0070.00716.57
7.2.40.0040.01116.70
7.2.30.0000.01316.63
7.2.20.0100.00316.55
7.2.10.0100.00616.73
7.2.00.0050.01018.00
7.1.330.0070.01015.67
7.1.320.0080.00315.93
7.1.310.0080.00815.57
7.1.300.0030.00715.85
7.1.290.0060.00615.75
7.1.280.0060.00615.36
7.1.270.0030.01015.76
7.1.260.0060.00915.75
7.1.250.0030.00915.74
7.1.200.0000.01115.89
7.1.100.0000.01318.21
7.1.70.0030.00517.17
7.1.60.0140.01020.41
7.1.00.0000.08022.41
7.0.200.1440.01014.71
7.0.60.0330.07019.82
7.0.50.0070.04017.91
7.0.40.0230.05320.25
7.0.30.0370.06720.07
7.0.20.0270.06020.08
7.0.10.0270.05320.23
7.0.00.0200.05720.22
5.6.280.0070.09321.13
5.6.210.0100.06720.57
5.6.200.0070.04018.22
5.6.190.0130.06320.45
5.6.180.0270.07320.46
5.6.170.0230.07720.45
5.6.160.0170.05720.45
5.6.150.0230.05320.41
5.6.140.0200.05720.29
5.6.130.0200.05320.36
5.6.120.0200.05320.59
5.6.110.0100.06320.26
5.6.100.0230.05320.29
5.6.90.0200.06020.31
5.6.80.0230.05319.82
5.6.70.0270.05319.70
5.6.60.0230.05319.69
5.6.50.0170.05319.77
5.6.40.0170.05319.67
5.6.30.0230.06719.58
5.6.20.0230.05719.77
5.6.10.0130.06019.72
5.6.00.0130.05719.76
5.5.350.0300.08320.30
5.5.340.0130.06318.02
5.5.330.0170.05720.41
5.5.320.0170.08320.41
5.5.310.0470.05720.25
5.5.300.0100.06320.12
5.5.290.0100.06320.14
5.5.280.0070.06720.17
5.5.270.0230.05020.18
5.5.260.0270.05020.13
5.5.250.0200.05320.05
5.5.240.0200.05319.56
5.5.230.0270.04719.38
5.5.220.0270.04719.57
5.5.210.0130.05719.57
5.5.200.0130.05719.57
5.5.190.0130.06019.50
5.5.180.0130.05719.51
5.5.160.0130.06019.56
5.5.150.0200.05319.59
5.5.140.0270.04319.46
5.5.130.0270.04319.55
5.5.120.0200.05019.44
5.5.110.0170.05319.57
5.5.100.0130.05019.28
5.5.90.0130.06319.46
5.5.80.0330.04319.41
5.5.70.0530.06319.48
5.5.60.0570.05019.48
5.5.50.0500.05719.43
5.5.40.0500.05719.36
5.5.30.0470.06019.68
5.5.20.0430.05719.39
5.5.10.0470.08319.46
5.5.00.0570.05719.34

preferences:
56.77 ms | 401 KiB | 5 Q