3v4l.org

run code in 300+ PHP versions simultaneously
<?php $buffer = -1; function callback($output) { global $buffer; $buffer = $output; return 'R'; } ob_start('callback'); echo 'hello'; //$a = ob_get_contents(); $b = ob_get_clean(); echo $b; var_dump($buffer);

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)
8.3.60.0100.00716.38
8.3.50.0130.00621.97
8.3.40.0140.00018.67
8.3.30.0150.00319.08
8.3.20.0040.00420.29
8.3.10.0000.00823.54
8.3.00.0040.00419.25
8.2.180.0140.00718.40
8.2.170.0070.00722.96
8.2.160.0100.00320.55
8.2.150.0050.00324.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0050.00322.10
8.2.110.0040.00422.04
8.2.100.0040.00717.88
8.2.90.0000.00919.17
8.2.80.0040.00418.05
8.2.70.0060.00317.38
8.2.60.0050.00218.03
8.2.50.0040.00418.07
8.2.40.0090.00020.00
8.2.30.0000.00719.97
8.2.20.0040.00417.55
8.2.10.0070.00018.17
8.2.00.0000.00717.64
8.1.280.0100.00725.92
8.1.270.0040.00423.92
8.1.260.0080.00026.35
8.1.250.0080.00028.09
8.1.240.0060.00323.81
8.1.230.0060.00619.15
8.1.220.0040.00417.74
8.1.210.0080.00018.77
8.1.200.0030.00617.23
8.1.190.0000.00817.35
8.1.180.0060.00318.10
8.1.170.0050.00318.52
8.1.160.0050.00221.85
8.1.150.0080.00318.51
8.1.140.0070.00017.25
8.1.130.0070.00017.81
8.1.120.0000.00717.27
8.1.110.0040.00417.40
8.1.100.0000.00717.29
8.1.90.0070.00017.27
8.1.80.0030.00417.41
8.1.70.0030.00317.32
8.1.60.0040.00417.46
8.1.50.0050.00317.36
8.1.40.0000.00817.50
8.1.30.0040.00417.50
8.1.20.0040.00417.59
8.1.10.0000.00717.47
8.1.00.0040.00417.46
8.0.300.0000.00720.80
8.0.290.0040.00317.05
8.0.280.0030.00318.44
8.0.270.0050.00217.26
8.0.260.0080.00017.13
8.0.250.0000.00716.95
8.0.240.0030.00317.01
8.0.230.0000.00716.78
8.0.220.0070.00016.76
8.0.210.0030.00316.84
8.0.200.0070.00016.92
8.0.190.0000.00816.75
8.0.180.0070.00016.84
8.0.170.0080.00016.91
8.0.160.0040.00416.75
8.0.150.0030.00316.74
8.0.140.0070.00016.67
8.0.130.0000.00513.27
8.0.120.0040.00416.71
8.0.110.0040.00416.78
8.0.100.0040.00416.77
8.0.90.0030.00516.75
8.0.80.0060.00916.77
8.0.70.0000.00816.94
8.0.60.0000.00716.91
8.0.50.0040.00416.83
8.0.30.0040.01316.98
8.0.20.0090.01117.40
8.0.10.0040.00416.81
8.0.00.0150.00616.60
7.4.330.0000.00515.00
7.4.320.0040.00416.43
7.4.300.0030.00316.38
7.4.290.0050.00316.38
7.4.280.0080.00016.55
7.4.270.0070.00016.53
7.4.260.0070.00016.48
7.4.250.0030.00516.31
7.4.240.0020.00516.41
7.4.230.0030.00316.50
7.4.220.0070.01116.54
7.4.210.0090.00616.49
7.4.200.0030.00316.27
7.4.190.0070.00016.39
7.4.160.0030.01316.46
7.4.150.0140.00417.40
7.4.140.0090.01017.86
7.4.130.0060.01016.52
7.4.120.0090.00716.39
7.4.110.0060.01616.46
7.4.100.0090.01216.50
7.4.90.0090.01216.37
7.4.80.0160.00719.39
7.4.70.0160.00016.39
7.4.60.0060.01216.37
7.4.50.0040.00416.47
7.4.40.0120.00616.18
7.4.30.0080.00816.60
7.4.00.0110.00014.64
7.3.330.0030.00313.30
7.3.320.0050.00013.01
7.3.310.0030.00316.20
7.3.300.0030.00316.20
7.3.290.0070.01316.22
7.3.280.0100.01016.27
7.3.270.0090.00917.40
7.3.260.0090.00916.41
7.3.250.0120.00716.36
7.3.240.0030.01316.45
7.3.230.0030.01716.39
7.3.210.0130.00616.52
7.3.200.0060.01219.39
7.3.190.0060.01216.36
7.3.180.0100.00716.27
7.3.170.0080.00816.39
7.3.160.0080.00816.37
7.3.120.0110.00414.77
7.2.330.0080.01116.40
7.2.320.0040.01416.45
7.2.310.0070.01016.67
7.2.300.0100.00616.32
7.2.290.0100.00716.72
7.2.60.0070.00716.92
7.2.00.0030.01219.25
7.1.200.0040.00815.86
7.1.100.0110.00018.35
7.1.70.0070.00417.03
7.1.60.0070.01319.46
7.1.50.0150.00616.57
7.1.00.0030.07722.48
7.0.200.0080.00016.98
7.0.140.0030.07021.99
7.0.60.0000.06019.93
7.0.50.0030.04017.84
7.0.40.0070.04020.31
7.0.30.0070.06020.21
7.0.20.0170.08320.09
7.0.10.0030.08720.23
7.0.00.0100.08320.09
5.6.280.0100.06321.08
5.6.210.0070.06020.47
5.6.200.0030.05318.18
5.6.190.0030.04320.67
5.6.180.0070.09020.48
5.6.170.0170.07720.62
5.6.160.0070.08720.52
5.6.150.0100.07018.23
5.6.140.0170.05018.14
5.6.130.0130.05018.23
5.6.120.0170.07320.90
5.6.110.0270.06020.94
5.6.100.0130.07721.05
5.6.90.0100.08021.00
5.6.80.0070.08020.38
5.5.350.0200.04320.30
5.5.340.0030.07318.08
5.5.330.0070.09020.32
5.5.320.0200.06320.37
5.5.310.0170.04320.30
5.5.300.0030.08017.95
5.5.290.0130.04318.04
5.5.280.0100.05320.76
5.5.270.0030.04320.76
5.5.260.0000.07020.93
5.5.250.0130.07320.68
5.5.240.0100.06720.26
5.4.450.0230.05319.61
5.4.440.0230.06319.63
5.4.430.0130.07019.16
5.4.420.0230.05019.70
5.4.410.0170.05319.46
5.4.400.0130.05719.26
5.4.390.0170.05319.29
5.4.380.0100.05718.47
5.4.370.0130.05318.59
5.4.360.0170.04718.62
5.4.350.0070.06018.59
5.4.340.0100.05318.74
5.4.320.0100.03812.50
5.4.310.0040.04712.50
5.4.300.0060.03712.50
5.4.290.0130.05612.48
5.4.280.0090.05112.38
5.4.270.0060.05712.38
5.4.260.0080.04412.39
5.4.250.0110.04012.39
5.4.240.0110.04112.38
5.4.230.0090.03812.38
5.4.220.0070.04412.38
5.4.210.0060.03512.37
5.4.200.0080.03612.37
5.4.190.0050.03712.38
5.4.180.0080.03312.37
5.4.170.0030.04012.38
5.4.160.0050.03712.38
5.4.150.0080.03412.37
5.4.140.0040.04012.05
5.4.130.0050.03712.04
5.4.120.0090.03212.00
5.4.110.0040.03811.99
5.4.100.0080.03312.00
5.4.90.0080.03712.00
5.4.80.0070.04312.00
5.4.70.0060.05011.99
5.4.60.0050.03812.00
5.4.50.0040.03711.99
5.4.40.0060.03411.98
5.4.30.0090.03211.98
5.4.20.0060.03511.98
5.4.10.0030.03711.98
5.4.00.0090.03311.47
5.3.290.0080.03712.80
5.3.280.0090.03512.71
5.3.270.0070.04012.72
5.3.260.0150.05112.72
5.3.250.0080.04212.71
5.3.240.0090.03612.72
5.3.230.0090.04612.71
5.3.220.0080.05412.68
5.3.210.0090.05512.68
5.3.200.0140.07112.68
5.3.190.0230.06912.68
5.3.180.0120.05312.68
5.3.170.0070.05412.67
5.3.160.0110.04712.68
5.3.150.0080.04712.67
5.3.140.0040.04012.66
5.3.130.0120.04312.66
5.3.120.0060.04112.65
5.3.110.0090.03812.66
5.3.100.0040.04012.12
5.3.90.0080.03712.10
5.3.80.0060.04012.09
5.3.70.0120.03312.10
5.3.60.0110.04812.08
5.3.50.0070.03912.03
5.3.40.0050.03912.03
5.3.30.0080.03411.98
5.3.20.0040.03811.76
5.3.10.0080.03811.73
5.3.00.0110.04711.72
5.2.170.0070.0449.22
5.2.160.0040.0399.22
5.2.150.0020.0369.22
5.2.140.0050.0329.21
5.2.130.0110.0379.18
5.2.120.0060.0419.18
5.2.110.0060.0299.18
5.2.100.0060.0289.17
5.2.90.0030.0309.18
5.2.80.0030.0319.17
5.2.70.0050.0299.17
5.2.60.0060.0289.13
5.2.50.0050.0309.10
5.2.40.0060.0279.08
5.2.30.0030.0319.04
5.2.20.0090.0249.03
5.2.10.0070.0268.94
5.2.00.0050.0298.81
5.1.60.0040.0248.09
5.1.50.0050.0238.09
5.1.40.0030.0258.06
5.1.30.0020.0288.41
5.1.20.0040.0278.43
5.1.10.0060.0308.16
5.1.00.0070.0248.16
5.0.50.0070.0266.64
5.0.40.0040.0206.50
5.0.30.0030.0326.31
5.0.20.0040.0196.28
5.0.10.0030.0206.26
5.0.00.0060.0286.25
4.4.90.0030.0194.78
4.4.80.0040.0154.75
4.4.70.0010.0174.76
4.4.60.0020.0234.75
4.4.50.0020.0234.77
4.4.40.0030.0334.71
4.4.30.0070.0164.76
4.4.20.0080.0294.84
4.4.10.0020.0164.85
4.4.00.0030.0264.76
4.3.110.0020.0174.67
4.3.100.0030.0154.66
4.3.90.0030.0144.63
4.3.80.0010.0264.59
4.3.70.0020.0154.63
4.3.60.0000.0174.63
4.3.50.0050.0184.63
4.3.40.0020.0254.54
4.3.30.0030.0183.30
4.3.20.0020.0163.28
4.3.10.0020.0183.24
4.3.00.0070.0177.55

preferences:
33.81 ms | 401 KiB | 5 Q