3v4l.org

run code in 300+ PHP versions simultaneously
<?php // given: unset($undef); $null = NULL; $false = FALSE; $true = TRUE; // these operations: var_dump(isset($var)); var_dump(empty($var)); var_dump(array_key_exists('var', $GLOBALS)); // "defined" below

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)
8.3.60.0070.01416.50
8.3.50.0090.00722.05
8.3.40.0090.00918.59
8.3.30.0110.00318.81
8.3.20.0050.00320.34
8.3.10.0040.00423.48
8.3.00.0070.00020.67
8.2.180.0090.00618.39
8.2.170.0170.00022.96
8.2.160.0100.00322.25
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0000.00826.16
8.2.120.0030.00522.08
8.2.110.0060.00320.94
8.2.100.0110.00617.84
8.2.90.0000.00819.11
8.2.80.0040.00417.97
8.2.70.0040.00417.38
8.2.60.0050.00318.04
8.2.50.0050.00318.10
8.2.40.0060.00318.14
8.2.30.0050.00218.06
8.2.20.0000.00717.64
8.2.10.0060.00317.52
8.2.00.0070.00017.60
8.1.280.0100.00325.92
8.1.270.0050.00323.96
8.1.260.0000.00726.35
8.1.250.0080.00028.09
8.1.240.0100.00022.64
8.1.230.0070.00417.72
8.1.220.0000.00817.74
8.1.210.0000.00818.77
8.1.200.0040.00417.13
8.1.190.0000.00817.23
8.1.180.0050.00318.10
8.1.170.0040.00418.52
8.1.160.0060.00321.95
8.1.150.0000.00818.57
8.1.140.0040.00417.43
8.1.130.0000.00717.82
8.1.120.0000.00717.39
8.1.110.0050.00317.38
8.1.100.0080.00017.30
8.1.90.0000.00717.46
8.1.80.0030.00517.29
8.1.70.0030.00617.44
8.1.60.0060.00517.53
8.1.50.0040.00417.59
8.1.40.0020.00517.50
8.1.30.0000.00817.49
8.1.20.0040.00417.60
8.1.10.0000.00717.58
8.1.00.0040.00417.47
8.0.300.0040.00418.77
8.0.290.0030.00516.63
8.0.280.0070.00018.35
8.0.270.0030.00317.29
8.0.260.0030.00316.72
8.0.250.0000.00616.81
8.0.240.0000.00716.84
8.0.230.0070.00016.94
8.0.220.0080.00016.95
8.0.210.0000.00716.84
8.0.200.0030.00316.87
8.0.190.0080.00016.86
8.0.180.0000.00716.95
8.0.170.0040.00416.87
8.0.160.0040.00416.77
8.0.150.0000.00716.88
8.0.140.0050.00316.87
8.0.130.0000.00513.25
8.0.120.0080.00016.71
8.0.110.0050.00316.81
8.0.100.0040.00416.93
8.0.90.0000.00716.76
8.0.80.0100.01116.86
8.0.70.0050.00316.68
8.0.60.0070.00016.95
8.0.50.0050.00216.68
8.0.30.0150.00617.05
8.0.20.0090.01017.40
8.0.10.0040.00416.88
8.0.00.0090.00916.71
7.4.330.0050.00015.00
7.4.320.0000.00616.62
7.4.300.0030.00316.65
7.4.290.0040.00716.64
7.4.280.0040.00416.43
7.4.270.0000.00616.43
7.4.260.0000.00716.52
7.4.250.0070.00016.48
7.4.240.0000.00716.64
7.4.230.0070.00016.57
7.4.220.0200.00716.53
7.4.210.0090.00816.64
7.4.200.0000.00716.58
7.4.190.0000.00716.73
7.4.160.0090.01316.38
7.4.150.0100.00717.40
7.4.140.0100.00717.86
7.4.130.0060.01116.43
7.4.120.0120.00516.41
7.4.110.0090.00616.40
7.4.100.0100.00916.52
7.4.90.0130.00616.77
7.4.80.0070.01116.65
7.4.70.0080.00816.44
7.4.60.0080.00816.52
7.4.50.0000.00816.32
7.4.40.0080.00622.77
7.4.30.0090.00616.66
7.4.00.0060.01114.97
7.3.330.0030.00312.88
7.3.320.0030.00313.04
7.3.310.0030.00316.07
7.3.300.0000.00616.16
7.3.290.0090.00916.10
7.3.280.0070.01016.09
7.3.270.0170.00017.40
7.3.260.0070.01316.33
7.3.250.0090.00916.27
7.3.240.0070.01016.15
7.3.230.0070.01016.39
7.3.210.0090.00916.21
7.3.200.0100.01119.39
7.3.190.0240.00016.07
7.3.180.0060.01216.21
7.3.170.0130.00316.42
7.3.160.0170.00316.23
7.3.120.0050.01314.79
7.3.110.0070.01114.63
7.3.100.0090.00614.41
7.3.90.0120.00314.85
7.3.80.0110.00314.89
7.3.70.0100.00314.64
7.3.60.0100.01014.70
7.3.50.0070.00714.39
7.3.40.0040.01114.65
7.3.30.0030.01014.66
7.3.20.0090.00316.38
7.3.10.0030.01416.61
7.3.00.0000.01416.62
7.2.330.0120.00616.39
7.2.320.0070.01016.60
7.2.310.0090.00916.38
7.2.300.0130.00316.53
7.2.290.0070.01016.48
7.2.250.0070.01314.79
7.2.240.0000.01714.75
7.2.230.0150.00014.72
7.2.220.0060.00615.20
7.2.210.0060.00614.95
7.2.200.0040.01114.93
7.2.190.0040.01815.05
7.2.180.0070.00714.68
7.2.170.0030.00614.90
7.2.60.0090.00616.93
7.2.00.0060.00619.26
7.1.330.0090.00615.63
7.1.320.0110.00415.89
7.1.310.0100.00715.93
7.1.300.0040.01215.82
7.1.290.0050.00515.80
7.1.280.0030.00615.55
7.1.270.0030.01015.57
7.1.260.0000.01415.67
7.1.200.0060.00915.52
7.1.100.0000.00918.08
7.1.70.0050.00516.91
7.1.60.0110.01519.29
7.1.50.0090.01216.52
7.1.00.0100.07022.45
7.0.200.0020.00516.34
7.0.140.0000.07722.21
7.0.60.0130.07319.98
7.0.50.0030.07717.80
7.0.40.0070.09320.03
7.0.30.0170.04320.09
7.0.20.0300.07020.16
7.0.10.0300.05320.00
7.0.00.0100.07720.12
5.6.210.0030.06320.74
5.6.200.0070.07318.09
5.6.190.0130.07720.68
5.6.180.0430.05720.64
5.6.170.0330.04720.62
5.6.160.0100.07320.70
5.6.150.0030.08318.13
5.6.140.0070.08018.18
5.6.130.0030.04718.21
5.6.120.0070.08320.99
5.6.110.0100.07321.03
5.6.100.0130.05720.98
5.6.90.0000.04720.94
5.6.80.0070.03720.41
5.6.70.1500.03720.34
5.5.350.0070.07720.41
5.5.340.0030.04717.98
5.5.330.0100.08020.21
5.5.320.0030.08320.18
5.5.310.0270.04720.32
5.5.300.0170.07318.02
5.5.290.0070.06017.98
5.5.280.0130.07320.82
5.5.270.0130.07720.95
5.5.260.0170.07320.87
5.5.250.0130.07720.45
5.5.240.0130.07720.36
5.4.450.0430.05019.52
5.4.440.0270.05319.28
5.4.430.0330.03719.45
5.4.420.0200.05719.36
5.4.410.0230.05019.15
5.4.400.1400.04018.66
5.4.390.1070.07018.55
5.4.380.0170.05318.75
5.4.370.0030.07018.56
5.4.360.0130.05318.49
5.4.350.0070.06018.46
5.4.340.0130.05718.56
5.4.320.0080.04212.45
5.4.310.0080.04112.45
5.4.300.0030.04212.45
5.4.290.0030.04312.45
5.4.280.0060.04612.35
5.4.270.0070.03512.35
5.4.260.0060.03612.31
5.4.250.0040.03812.31
5.4.240.0050.03612.32
5.4.230.0060.04112.31
5.4.220.0060.03512.31
5.4.210.0070.03412.30
5.4.200.0030.04012.31
5.4.190.0020.03912.30
5.4.180.0030.04012.30
5.4.170.0070.03412.31
5.4.160.0060.03612.31
5.4.150.0050.03712.30
5.4.140.0070.03411.98
5.4.130.0030.03711.98
5.4.120.0060.03411.93
5.4.110.0060.03711.93
5.4.100.0040.03711.93
5.4.90.0080.03411.93
5.4.80.0050.03711.93
5.4.70.0050.03511.93
5.4.60.0060.03411.93
5.4.50.0060.03511.92
5.4.40.0050.03611.91
5.4.30.0030.03811.91
5.4.20.0050.03511.91
5.4.10.0010.03811.91
5.4.00.0040.03711.40
5.3.290.0040.04112.80
5.3.280.0070.03512.71
5.3.270.0080.04312.73
5.3.260.0070.03812.72
5.3.250.0050.03812.71
5.3.240.0070.04012.72
5.3.230.0080.04312.71
5.3.220.0030.03912.68
5.3.210.0050.03912.68
5.3.200.0080.03312.68
5.3.190.0080.03512.68
5.3.180.0080.03612.67
5.3.170.0060.03712.67
5.3.160.0090.03312.67
5.3.150.0040.03812.67
5.3.140.0050.03712.66
5.3.130.0050.04512.66
5.3.120.0040.04012.66
5.3.110.0050.03912.66
5.3.100.0050.03712.12
5.3.90.0040.03812.09
5.3.80.0040.03812.07
5.3.70.0080.03412.07
5.3.60.0050.03712.06
5.3.50.0030.03812.00
5.3.40.0110.03112.00
5.3.30.0030.03711.94
5.3.20.0070.03311.69
5.3.10.0050.03611.65
5.3.00.0040.03711.64
5.2.170.0060.0299.14
5.2.160.0040.0299.14
5.2.150.0030.0319.14
5.2.140.0050.0349.13
5.2.130.0020.0319.09
5.2.120.0060.0269.10
5.2.110.0040.0299.10
5.2.100.0020.0309.10
5.2.90.0070.0269.10
5.2.80.0070.0279.10
5.2.70.0030.0319.09
5.2.60.0020.0329.05
5.2.50.0060.0279.02
5.2.40.0060.0269.00
5.2.30.0050.0288.97
5.2.20.0080.0308.95
5.2.10.0040.0288.88
5.2.00.0020.0308.74
5.1.60.0050.0228.02
5.1.50.0050.0238.02
5.1.40.0060.0228.01
5.1.30.0070.0258.35
5.1.20.0050.0258.39
5.1.10.0020.0278.11
5.1.00.0020.0278.10
5.0.50.0030.0206.58
5.0.40.0020.0206.44
5.0.30.0040.0306.25
5.0.20.0040.0186.23
5.0.10.0050.0186.20
5.0.00.0040.0306.20
4.4.90.0040.0144.78
4.4.80.0020.0164.75
4.4.70.0020.0174.76
4.4.60.0020.0164.76
4.4.50.0030.0164.77
4.4.40.0000.0284.71
4.4.30.0010.0214.76
4.4.20.0030.0154.84
4.4.10.0020.0164.85
4.4.00.0020.0254.76
4.3.110.0020.0164.67
4.3.100.0010.0164.66
4.3.90.0030.0144.63
4.3.80.0040.0244.59
4.3.70.0030.0154.63
4.3.60.0010.0164.63
4.3.50.0030.0154.63
4.3.40.0030.0234.54
4.3.30.0020.0193.27
4.3.20.0010.0173.25
4.3.10.0040.0143.21
4.3.00.0170.01312.57

preferences:
28.66 ms | 401 KiB | 5 Q