3v4l.org

run code in 300+ PHP versions simultaneously
<?php function a () { static $b = null; if (is_null($b)) { echo 'Doing work.'; $b = 'blop'; } return $b; } var_dump(a()); var_dump(a()); var_dump(a()); var_dump(a()); var_dump(a()); var_dump(a()); var_dump(a()); 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)
8.3.40.0110.00418.66
8.3.30.0030.01019.09
8.3.20.0130.00620.29
8.3.10.0050.00223.52
8.3.00.0050.00320.71
8.2.170.0120.00922.96
8.2.160.0100.01022.01
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0080.00020.35
8.2.110.0050.00522.27
8.2.100.0000.01117.91
8.2.90.0050.00219.21
8.2.80.0040.00417.97
8.2.70.0060.00317.50
8.2.60.0050.00317.93
8.2.50.0060.00318.07
8.2.40.0040.00418.07
8.2.30.0040.00418.09
8.2.20.0050.00317.68
8.2.10.0000.00717.70
8.2.00.0050.00217.65
8.1.270.0040.00423.96
8.1.260.0050.00326.35
8.1.250.0050.00328.09
8.1.240.0090.00023.63
8.1.230.0000.01119.08
8.1.220.0000.00717.74
8.1.210.0050.00318.77
8.1.200.0060.00317.11
8.1.190.0030.00617.52
8.1.180.0000.00818.10
8.1.170.0040.00418.55
8.1.160.0000.00722.08
8.1.150.0040.00418.68
8.1.140.0000.00717.46
8.1.130.0050.00317.72
8.1.120.0090.00017.44
8.1.110.0000.00817.47
8.1.100.0000.00817.31
8.1.90.0000.00717.32
8.1.80.0030.00317.34
8.1.70.0030.00317.36
8.1.60.0090.00017.63
8.1.50.0060.00317.54
8.1.40.0000.00717.54
8.1.30.0080.00017.57
8.1.20.0040.00417.51
8.1.10.0040.00717.54
8.1.00.0040.00417.46
8.0.300.0000.00718.77
8.0.290.0040.00416.75
8.0.280.0030.00318.45
8.0.270.0070.00017.18
8.0.260.0040.00416.75
8.0.250.0030.00316.96
8.0.240.0070.00016.81
8.0.230.0000.00716.99
8.0.220.0000.00716.95
8.0.210.0000.00716.95
8.0.200.0040.00416.91
8.0.190.0040.00416.86
8.0.180.0050.00216.91
8.0.170.0000.00816.92
8.0.160.0000.00816.89
8.0.150.0000.00816.91
8.0.140.0070.00016.83
8.0.130.0030.00313.43
8.0.120.0040.00416.89
8.0.110.0000.00716.88
8.0.100.0040.00416.69
8.0.90.0030.00516.95
8.0.80.0110.00416.84
8.0.70.0050.00217.00
8.0.60.0000.00816.79
8.0.50.0000.00716.97
8.0.30.0130.00917.00
8.0.20.0030.01517.40
8.0.10.0040.00416.88
8.0.00.0090.00916.86
7.4.330.0020.00215.11
7.4.320.0030.00316.45
7.4.300.0030.00316.43
7.4.290.0000.00616.52
7.4.280.0000.00716.56
7.4.270.0000.00716.52
7.4.260.0030.00516.46
7.4.250.0040.00416.48
7.4.240.0020.00516.57
7.4.230.0030.00316.73
7.4.220.0090.00916.57
7.4.210.0080.00716.63
7.4.200.0070.00016.62
7.4.190.0000.00716.75
7.4.160.0100.00716.45
7.4.150.0090.01517.40
7.4.140.0110.00617.86
7.4.130.0100.00716.52
7.4.120.0120.00516.59
7.4.110.0150.00316.52
7.4.100.0120.01016.55
7.4.90.0150.00916.40
7.4.80.0090.00916.62
7.4.70.0120.00416.64
7.4.60.0100.00616.60
7.4.50.0060.00316.53
7.4.40.0070.00722.77
7.4.30.0100.00716.22
7.4.00.0000.01714.72
7.3.330.0000.00513.26
7.3.320.0000.00513.02
7.3.310.0070.00016.24
7.3.300.0030.00316.13
7.3.290.0120.00316.22
7.3.280.0090.00816.27
7.3.270.0100.00717.40
7.3.260.0060.01016.31
7.3.250.0110.00916.27
7.3.240.0200.00416.40
7.3.230.0110.00616.39
7.3.210.0070.01016.30
7.3.200.0120.00919.39
7.3.190.0090.00916.46
7.3.180.0090.00616.27
7.3.170.0080.01116.40
7.3.160.0030.01316.25
7.3.120.0030.00715.06
7.2.330.0070.01116.36
7.2.320.0080.00816.33
7.2.310.0070.01016.32
7.2.300.0130.00316.58
7.2.290.0100.01316.48
7.2.00.0000.01319.48
7.1.200.0070.00715.50
7.1.100.0050.00517.68
7.1.70.0030.00316.81
7.1.60.0100.01419.27
7.1.50.0070.00716.95
7.1.00.0030.07322.40
7.0.200.0030.00716.63
7.0.140.0100.06722.04
7.0.60.0030.09019.86
7.0.50.0100.07717.95
7.0.40.0000.05720.19
7.0.30.0330.04720.08
7.0.20.0300.07720.26
7.0.10.0030.06320.15
7.0.00.0170.03320.07
5.6.280.0000.07721.13
5.6.210.0070.08020.75
5.6.200.0030.04018.22
5.6.190.0030.08020.46
5.6.180.0270.07720.48
5.6.170.0270.05720.41
5.6.160.0130.08020.54
5.6.150.0030.04018.19
5.6.140.0070.08018.15
5.6.130.0100.06018.18
5.6.120.0000.07321.00
5.6.110.0000.08720.98
5.6.100.0030.08720.96
5.6.90.0100.08321.04
5.6.80.0070.06720.51
5.5.350.0030.08020.33
5.5.340.0070.08017.98
5.5.330.0100.04020.47
5.5.320.0030.06020.35
5.5.310.0370.04720.41
5.5.300.0030.07317.94
5.5.290.0000.06018.08
5.5.280.0000.04720.88
5.5.270.0070.06720.96
5.5.260.0100.08020.84
5.5.250.0100.06720.69
5.5.240.0200.06020.15
5.4.450.0770.04319.41
5.4.440.0900.03019.47
5.4.430.0730.05019.54
5.4.420.1100.05719.30
5.4.410.1100.04019.18
5.4.400.1070.05319.00
5.4.390.0900.05019.21
5.4.380.0300.05318.47
5.4.370.0630.06018.80
5.4.360.0430.04018.79
5.4.350.0570.06318.57
5.4.340.0370.06018.79
5.4.320.0070.03412.50
5.4.310.0070.03612.50
5.4.300.0090.04112.50
5.4.290.0050.04312.50
5.4.280.0070.03412.39
5.4.270.0060.03512.40
5.4.260.0030.03912.39
5.4.250.0050.03712.40
5.4.240.0040.03712.40
5.4.230.0050.03712.39
5.4.220.0050.03612.39
5.4.210.0060.03412.39
5.4.200.0060.03812.39
5.4.190.0140.04612.38
5.4.180.0290.06012.38
5.4.170.0140.04512.39
5.4.160.0180.04412.39
5.4.150.0220.03912.38
5.4.140.0240.04112.07
5.4.130.0140.04512.06
5.4.120.0150.04512.02
5.4.110.0310.06112.01
5.4.100.0210.03912.01
5.4.90.0130.04712.01
5.4.80.0310.05812.01
5.4.70.0200.04012.00
5.4.60.0110.04612.00
5.4.50.0140.04312.00
5.4.40.0180.03811.99
5.4.30.0150.04211.98
5.4.20.0170.04111.99
5.4.10.0180.03911.99
5.4.00.0160.04311.48
5.3.290.0090.04612.80
5.3.280.0080.03612.71
5.3.270.0220.07312.72
5.3.260.0170.04712.72
5.3.250.0210.04512.72
5.3.240.0250.03912.72
5.3.230.0180.04312.71
5.3.220.0280.06312.68
5.3.210.0170.04512.68
5.3.200.0150.04912.68
5.3.190.0220.04212.68
5.3.180.0110.05012.68
5.3.170.0200.04012.67
5.3.160.0240.06812.67
5.3.150.0160.04512.67
5.3.140.0130.04612.66
5.3.130.0170.04412.66
5.3.120.0170.04512.66
5.3.110.0200.04112.66
5.3.100.0170.04412.12
5.3.90.0140.04512.10
5.3.80.0190.04212.09
5.3.70.0230.06712.09
5.3.60.0300.09112.07
5.3.50.0150.04412.02
5.3.40.0100.04912.02
5.3.30.0220.03611.99
5.3.20.0170.04011.77
5.3.10.0160.04011.73
5.3.00.0150.04111.71
5.2.170.0110.0369.21
5.2.160.0120.0349.22
5.2.150.0150.0329.21
5.2.140.0140.0349.22
5.2.130.0080.0389.18
5.2.120.0140.0329.18
5.2.110.0160.0329.18
5.2.100.0140.0359.18
5.2.90.0210.0289.18
5.2.80.0150.0629.17
5.2.70.0210.0579.17
5.2.60.0130.0339.12
5.2.50.0110.0369.09
5.2.40.0140.0349.07
5.2.30.0110.0369.04
5.2.20.0150.0629.05
5.2.10.0140.0328.94
5.2.00.0090.0368.80
5.1.60.0120.0288.08
5.1.50.0100.0308.08
5.1.40.0070.0348.07
5.1.30.0110.0318.41
5.1.20.0150.0298.44
5.1.10.0110.0318.16
5.1.00.0100.0318.16
5.0.50.0120.0226.64
5.0.40.0100.0226.49
5.0.30.0070.0376.31
5.0.20.0080.0246.28
5.0.10.0100.0216.26
5.0.00.0080.0376.25
4.4.90.0050.0204.78
4.4.80.0060.0194.76
4.4.70.0080.0184.75
4.4.60.0060.0194.76
4.4.50.0070.0184.77
4.4.40.0090.0274.71
4.4.30.0060.0194.76
4.4.20.0030.0224.85
4.4.10.0080.0174.85
4.4.00.0060.0294.76
4.3.110.0060.0184.67
4.3.100.0070.0174.67
4.3.90.0060.0184.63
4.3.80.0050.0304.58
4.3.70.0070.0184.63
4.3.60.0060.0194.63
4.3.50.0100.0164.63
4.3.40.0100.0244.54
4.3.30.0040.0193.29
4.3.20.0070.0163.28
4.3.10.0050.0193.25
4.3.00.0270.03015.48

preferences:
38.62 ms | 400 KiB | 5 Q