3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Obj { } function callback($content) { return isset($GLOBALS['a']) ? $content : 'oops'; } ob_start('callback'); $a = new Obj(); //$b = $a; echo 'okay'; //ob_end_flush();

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)
8.3.60.0120.00918.40
8.3.50.0100.00318.18
8.3.40.0060.01118.82
8.3.30.0100.00319.04
8.3.20.0040.00420.38
8.3.10.0000.00822.14
8.3.00.0080.00022.43
8.2.180.0100.00716.38
8.2.170.0130.00722.96
8.2.160.0030.01320.95
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0030.01426.16
8.2.120.0080.00019.48
8.2.110.0090.00022.08
8.2.100.0090.00619.52
8.2.90.0080.00019.09
8.2.80.0030.00617.97
8.2.70.0000.00817.63
8.2.60.0080.00417.68
8.2.50.0000.00818.07
8.2.40.0000.00818.22
8.2.30.0030.00618.05
8.2.20.0020.00517.72
8.2.10.0050.00217.56
8.2.00.0000.00819.51
8.1.270.0040.00423.95
8.1.260.0080.00026.35
8.1.250.0080.00028.09
8.1.240.0090.00023.64
8.1.230.0100.00019.21
8.1.220.0000.00817.79
8.1.210.0040.00418.77
8.1.200.0030.00717.35
8.1.190.0040.00417.53
8.1.180.0040.00418.73
8.1.170.0060.00318.53
8.1.160.0070.00021.92
8.1.150.0030.00618.57
8.1.140.0070.00017.45
8.1.130.0080.00017.93
8.1.120.0000.00717.38
8.1.110.0040.00417.49
8.1.100.0000.00717.51
8.1.90.0050.00317.34
8.1.80.0000.00717.46
8.1.70.0000.00717.41
8.1.60.0060.00317.61
8.1.50.0040.00417.43
8.1.40.0040.00417.37
8.1.30.0000.00817.60
8.1.20.0060.00317.54
8.1.10.0030.00717.55
8.1.00.0000.00717.43
8.0.300.0070.00018.77
8.0.290.0030.00617.05
8.0.280.0030.00318.36
8.0.270.0000.00717.23
8.0.260.0000.00716.82
8.0.250.0030.00316.90
8.0.240.0000.00716.88
8.0.230.0000.00716.92
8.0.220.0000.00716.86
8.0.210.0070.00016.80
8.0.200.0030.00316.96
8.0.190.0060.00316.92
8.0.180.0060.00316.84
8.0.170.0030.00516.96
8.0.160.0070.00016.79
8.0.150.0050.00216.81
8.0.140.0040.00416.85
8.0.130.0040.00413.41
8.0.120.0040.00416.95
8.0.110.0000.00716.86
8.0.100.0040.00416.77
8.0.90.0000.00816.85
8.0.80.0040.01116.96
8.0.70.0000.00716.73
8.0.60.0040.00416.84
8.0.50.0000.00716.77
8.0.30.0070.01317.16
8.0.20.0130.01017.40
8.0.10.0000.00717.06
8.0.00.0090.00916.84
7.4.330.0030.00315.19
7.4.320.0000.00616.60
7.4.300.0030.00316.36
7.4.290.0070.00016.61
7.4.280.0070.00416.50
7.4.270.0070.00416.63
7.4.260.0070.00316.54
7.4.250.0000.00716.42
7.4.240.0050.00216.63
7.4.230.0030.00416.36
7.4.220.0080.01116.70
7.4.210.0060.01116.58
7.4.200.0070.00016.58
7.4.190.0030.00316.60
7.4.160.0110.00516.45
7.4.150.0070.01017.40
7.4.140.0080.01217.86
7.4.130.0050.01516.54
7.4.120.0100.00916.54
7.4.110.0030.01316.57
7.4.100.0070.01416.59
7.4.90.0040.01316.49
7.4.80.0100.01319.39
7.4.70.0180.00416.44
7.4.60.0130.00316.64
7.4.50.0000.00916.34
7.4.40.0030.01322.77
7.4.30.0130.00816.55
7.4.00.0000.01514.66
7.3.330.0000.00513.12
7.3.320.0000.00513.25
7.3.310.0000.00716.28
7.3.300.0040.00416.21
7.3.290.0100.00716.27
7.3.280.0110.00616.25
7.3.270.0090.00917.40
7.3.260.0080.01616.55
7.3.250.0090.01116.32
7.3.240.0130.00716.45
7.3.230.0080.01416.39
7.3.210.0090.00616.47
7.3.200.0170.00019.39
7.3.190.0070.01016.41
7.3.180.0040.01116.21
7.3.170.0090.00616.42
7.3.160.0130.00316.30
7.3.120.0100.00314.92
7.2.330.0090.00816.71
7.2.320.0030.01316.57
7.2.310.0120.01216.48
7.2.300.0110.00816.69
7.2.290.0100.00716.61
7.2.60.0090.00317.03
7.1.200.0070.00715.38
7.1.70.0040.00417.02
7.1.60.0060.01819.82
7.1.50.0100.01416.80
7.1.00.0000.08022.31
7.0.200.0030.00516.65
7.0.140.0070.06722.04
7.0.100.0170.06320.01
7.0.90.0070.06319.99
7.0.80.0200.04319.81
7.0.70.0100.05319.92
7.0.60.0230.04319.91
7.0.50.0070.04320.23
7.0.40.0070.04020.13
7.0.30.0030.05020.04
7.0.20.0030.07720.11
7.0.10.0070.07319.95
7.0.00.0130.05320.18
5.6.250.0100.03720.67
5.6.240.0100.08020.68
5.6.230.0070.07720.60
5.6.220.0030.06020.68
5.6.210.0200.05320.75
5.6.200.0100.08021.18
5.6.190.0030.06321.01
5.6.180.0130.03721.12
5.6.170.0030.07320.96
5.6.160.0000.08321.04
5.6.150.0070.08021.14
5.6.140.0070.05021.10
5.6.130.0070.08321.02
5.6.120.0000.05321.04
5.6.110.0200.04021.10
5.6.100.0000.05020.98
5.6.90.0070.06721.00
5.6.80.0000.04720.39
5.6.70.0070.03720.48
5.6.60.0200.06720.45
5.6.50.0070.07020.46
5.6.40.0100.04720.37
5.6.30.0070.06720.38
5.6.20.0070.08320.40
5.6.10.0000.08320.41
5.6.00.0100.03320.38
5.5.380.0070.06320.36
5.5.370.0030.08320.42
5.5.360.0200.04320.50
5.5.350.0100.06020.45
5.5.340.0070.04020.89
5.5.330.0070.04020.80
5.5.320.0100.03720.71
5.5.310.0130.05720.86
5.5.300.0030.08320.87
5.5.290.0030.04720.89
5.5.280.0130.08320.73
5.5.270.0030.06720.82
5.5.260.0070.04720.63
5.5.250.0070.05020.44
5.5.240.0100.04320.03
5.5.230.0070.04320.25
5.5.220.0130.07320.21
5.5.210.0030.04020.28
5.5.200.0070.06720.25
5.5.190.0130.06020.27
5.5.180.0100.05720.24
5.5.160.0070.04020.22
5.5.150.0130.06320.18
5.5.140.0030.05719.99
5.5.130.0030.05720.25
5.5.120.0070.07719.95
5.5.110.0030.07720.26
5.5.100.0100.07320.11
5.5.90.0030.07320.15
5.5.80.0030.06020.14
5.5.70.0030.05320.09
5.5.60.0030.04020.14
5.5.50.0030.04320.05
5.5.40.0000.04019.96
5.5.30.0070.03720.02
5.5.20.0030.04020.03
5.5.10.0170.02720.06
5.5.00.0130.03020.11
5.4.450.0000.04719.18
5.4.440.0030.04719.36
5.4.430.0030.05019.45
5.4.420.0030.08019.50
5.4.410.0030.04319.09
5.4.400.0130.07018.90
5.4.390.0030.05719.21
5.4.380.0030.04319.03
5.4.370.0030.04018.87
5.4.360.0070.03719.09
5.4.350.0170.04318.90
5.4.340.0000.06319.09
5.4.320.0170.05319.12
5.4.310.0100.03719.18
5.4.300.0130.05719.12
5.4.290.0200.05718.90
5.4.280.0100.06319.03
5.4.270.0130.06318.85
5.4.260.0030.07318.87
5.4.250.0030.07318.84
5.4.240.0130.06319.04
5.4.230.0070.03719.13
5.4.220.0000.04319.12
5.4.210.0100.03319.08
5.4.200.0070.03318.84
5.4.190.0000.07018.97
5.4.180.0070.03718.99
5.4.170.0030.03718.88
5.4.160.0030.03319.19
5.4.150.0030.03319.10
5.4.140.0070.03016.47
5.4.130.0000.03016.37
5.4.120.0030.03316.55
5.4.110.0030.03016.44
5.4.100.0030.03016.49
5.4.90.0030.03016.50
5.4.80.0100.02716.38
5.4.70.0000.03716.31
5.4.60.0030.03716.48
5.4.50.0030.03716.32
5.4.40.0070.03316.51
5.4.30.0030.03016.32
5.4.20.0030.03016.31
5.4.10.0200.02716.39
5.4.00.0070.03315.86
5.3.290.0070.07714.71
5.3.280.0030.05714.61
5.3.270.0030.04014.55
5.3.260.0000.03314.70
5.3.250.0030.04014.67
5.3.240.0070.03014.71
5.3.230.0000.03314.66
5.3.220.0030.03014.54
5.3.210.0130.03714.62
5.3.200.0070.03014.62
5.3.190.0000.04014.58
5.3.180.0070.02714.54
5.3.170.0000.04014.61
5.3.160.0030.04014.71
5.3.150.0130.02714.63
5.3.140.0000.03714.56
5.3.130.0030.03714.67
5.3.120.0070.02714.68
5.3.110.0000.03314.48
5.3.100.0030.03714.14
5.3.90.0000.03314.11
5.3.80.0030.03014.16
5.3.70.0030.03014.01
5.3.60.0000.03314.05
5.3.50.0100.02313.93
5.3.40.0100.02313.98
5.3.30.0100.03013.82
5.3.20.0030.02713.68
5.3.10.0000.03013.74
5.3.00.0000.03313.67
5.2.170.0030.02313.63
5.2.160.0000.02713.63
5.2.150.0000.02713.63
5.2.140.0000.03013.63
5.2.130.0030.02313.63
5.2.120.0030.03713.63
5.2.110.0100.01713.63
5.2.100.0000.02713.63
5.2.90.0030.02313.63
5.2.80.0030.02313.63
5.2.70.0070.02713.63
5.2.60.0000.03013.63
5.2.50.0030.02313.63
5.2.40.0000.02713.63
5.2.30.0100.01713.63
5.2.20.0030.02313.63
5.2.10.0030.02013.63
5.2.00.0000.02313.63
5.1.60.0000.02013.63
5.1.50.0000.02313.63
5.1.40.0070.01713.63
5.1.30.0000.03013.63
5.1.20.0030.02713.63
5.1.10.0000.03013.63
5.1.00.0100.03713.63
5.0.50.0000.02013.63
5.0.40.0030.01713.63
5.0.30.0070.04313.63
5.0.20.0030.02013.63
5.0.10.0000.02713.63
5.0.00.0030.05713.63
4.4.90.0000.01313.63
4.4.80.0000.01313.63
4.4.70.0030.01013.63
4.4.60.0000.01313.63
4.4.50.0030.01013.63
4.4.40.0070.01713.63
4.4.30.0000.01313.63
4.4.20.0000.01713.63
4.4.10.0030.02313.63
4.4.00.0000.02713.63
4.3.110.0030.02713.63
4.3.100.0130.02313.63
4.3.90.0070.02713.63
4.3.80.0030.04013.63
4.3.70.0000.01713.63
4.3.60.0030.02313.63
4.3.50.0030.01713.63
4.3.40.0000.03713.63
4.3.30.0000.03313.63
4.3.20.0000.02013.63
4.3.10.0030.03013.63
4.3.00.0030.02313.63

preferences:
66.82 ms | 400 KiB | 5 Q