3v4l.org

run code in 300+ PHP versions simultaneously
<?php class B implements JsonSerializable { public function jsonSerialize() { return array( 'Recursion' => array( 'across' => array( 'multiple' => array('levels' => $this) ) ) ); } } var_dump(json_encode(new B(), JSON_PARTIAL_OUTPUT_ON_ERROR));

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)
8.3.60.0110.00316.88
8.3.50.0090.00620.09
8.3.40.0110.00818.71
8.3.30.0140.00019.08
8.3.20.0040.00420.19
8.3.10.0040.00423.31
8.3.00.0040.00419.25
8.2.180.0030.01218.54
8.2.170.0100.00322.96
8.2.160.0000.01420.47
8.2.150.0000.00724.18
8.2.140.0040.00424.66
8.2.130.0030.00526.16
8.2.120.0040.00420.86
8.2.110.0000.00822.32
8.2.100.0050.00518.03
8.2.90.0060.00319.09
8.2.80.0000.00817.97
8.2.70.0030.00617.50
8.2.60.0040.00417.80
8.2.50.0030.00618.07
8.2.40.0040.00418.16
8.2.30.0000.00818.22
8.2.20.0040.00417.66
8.2.10.0040.00418.05
8.2.00.0030.00617.76
8.1.280.0180.00325.92
8.1.270.0050.00323.97
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0060.00322.19
8.1.230.0070.00419.04
8.1.220.0050.00317.79
8.1.210.0030.00518.77
8.1.200.0060.00617.48
8.1.190.0030.00617.35
8.1.180.0060.00318.10
8.1.170.0030.00518.63
8.1.160.0040.00422.02
8.1.150.0000.00818.85
8.1.140.0000.00917.32
8.1.130.0000.00717.74
8.1.120.0080.00017.39
8.1.110.0030.00517.36
8.1.100.0030.00317.53
8.1.90.0040.00717.35
8.1.80.0000.00817.39
8.1.70.0040.00417.43
8.1.60.0000.00817.52
8.1.50.0040.00417.47
8.1.40.0030.00617.48
8.1.30.0000.00817.48
8.1.20.0030.00617.43
8.1.10.0020.00517.34
8.1.00.0030.00617.28
8.0.300.0020.00518.77
8.0.290.0070.00016.75
8.0.280.0000.00718.32
8.0.270.0030.00517.27
8.0.260.0030.00317.26
8.0.250.0000.00716.97
8.0.240.0030.00316.98
8.0.230.0000.00716.77
8.0.220.0030.00316.83
8.0.210.0000.00716.79
8.0.200.0000.00816.95
8.0.190.0050.00216.91
8.0.180.0030.00316.91
8.0.170.0040.00416.82
8.0.160.0070.00016.68
8.0.150.0040.00416.75
8.0.140.0040.00416.68
8.0.130.0000.00713.22
8.0.120.0000.00816.74
8.0.110.0040.00416.84
8.0.100.0000.00716.66
8.0.90.0000.00816.79
8.0.80.0120.00916.82
8.0.70.0000.00816.82
8.0.60.0040.00416.79
8.0.50.0070.00016.74
8.0.30.0110.00717.05
8.0.20.0130.00817.40
8.0.10.0020.00516.80
8.0.00.0100.00716.64
7.4.330.0030.00315.09
7.4.320.0000.00616.58
7.4.300.0030.00316.56
7.4.290.0040.00416.58
7.4.280.0070.00016.42
7.4.270.0000.00716.42
7.4.260.0060.00316.50
7.4.250.0000.00716.47
7.4.240.0040.00416.39
7.4.230.0000.00716.34
7.4.220.0150.00916.54
7.4.210.0030.01316.57
7.4.200.0000.00716.33
7.4.160.0030.01316.48
7.4.150.0030.01717.40
7.4.140.0100.00817.86
7.4.130.0100.00716.51
7.4.120.0140.00616.43
7.4.110.0060.01216.65
7.4.100.0070.01016.41
7.4.90.0030.01616.51
7.4.80.0140.00319.39
7.4.70.0090.01216.30
7.4.60.0130.00316.60
7.4.50.0040.00416.61
7.4.40.0110.00616.37
7.4.30.0040.01316.58
7.4.00.0090.00614.78
7.3.330.0090.00013.29
7.3.320.0030.00313.13
7.3.310.0000.00716.30
7.3.300.0000.00716.29
7.3.290.0080.00516.31
7.3.280.0080.01016.33
7.3.270.0130.01017.40
7.3.260.0100.00716.24
7.3.250.0050.01116.28
7.3.240.0080.01216.59
7.3.230.0100.00616.39
7.3.210.0100.00716.27
7.3.200.0030.01719.39
7.3.190.0070.01016.41
7.3.180.0130.00316.21
7.3.170.0000.01716.30
7.3.160.0120.00416.32
7.2.330.0060.01516.34
7.2.320.0070.01416.63
7.2.310.0070.01716.65
7.2.300.0060.01116.69
7.2.290.0120.00316.66
7.2.60.0060.00616.42
7.2.00.0000.01419.42
7.1.200.0040.01115.60
7.1.100.0000.01018.12
7.1.70.0030.00317.00
7.1.60.0140.01019.40
7.1.50.0000.02316.98
7.1.00.0100.06722.31
7.0.200.0030.00716.55
7.0.140.0030.07321.93
7.0.110.0170.07719.91
7.0.100.0030.07719.96
7.0.90.0170.06719.98
7.0.80.0570.07719.96
7.0.70.0530.08020.02
7.0.60.0700.07320.08
7.0.50.0630.07320.43
7.0.40.0170.06320.23
7.0.30.0000.04720.07
7.0.20.0070.08320.05
7.0.10.0130.05020.21
7.0.00.0070.06020.27
5.6.280.0070.07021.07
5.6.260.0100.07020.69
5.6.250.0100.08320.69
5.6.240.0230.06720.64
5.6.230.0100.04720.60
5.6.220.0030.06720.63
5.6.210.0030.08320.66
5.6.200.0000.08721.20
5.6.190.0000.08321.11
5.6.180.0030.08320.96
5.6.170.0100.08721.29
5.6.160.0100.08021.15
5.6.150.0070.08021.29
5.6.140.0070.06021.29
5.6.130.0070.08021.29
5.6.120.0200.07321.26
5.6.110.0130.07021.14
5.6.100.0070.07721.11
5.6.90.0070.06321.06
5.6.80.0070.05020.38
5.6.70.0030.08020.37
5.6.60.0070.08020.45
5.6.50.0100.04020.50
5.6.40.0070.08320.62
5.6.30.0030.08020.35
5.6.20.0100.07020.50
5.6.10.0170.06320.31
5.6.00.0170.06320.48
5.5.380.0100.07320.55
5.5.370.0000.04720.38
5.5.360.0130.07320.56
5.5.350.0170.04320.47
5.5.340.0100.08021.02
5.5.330.0100.06720.97
5.5.320.0100.08320.76
5.5.310.0100.06320.77
5.5.300.0000.08020.89
5.5.290.0070.08320.89
5.5.280.0070.08720.81
5.5.270.0230.03720.89
5.5.260.0030.08320.80
5.5.250.0100.07320.82
5.5.240.0070.07320.27
5.5.230.0030.06720.34
5.5.220.0070.05720.35
5.5.210.0070.06020.32
5.5.200.0070.07720.30
5.5.190.0070.07720.05
5.5.180.0070.03720.37
5.5.160.0100.07320.22
5.5.150.0100.07320.16
5.5.140.0030.08020.18
5.5.130.0070.04720.23
5.5.120.0100.08320.21
5.5.110.0030.08720.02
5.5.100.0130.07020.09
5.5.90.0070.07719.98
5.5.80.0100.07320.27
5.5.70.0030.05320.26
5.5.60.0170.07020.04
5.5.50.0100.05320.21
5.5.40.0100.04320.13
5.5.30.0130.07319.98
5.5.20.0000.08320.23
5.5.10.0070.06320.18
5.5.00.0070.08019.92
5.4.450.0070.08019.31
5.4.440.0170.07719.50
5.4.430.0070.08319.31
5.4.420.0070.07719.31
5.4.410.0070.07319.19
5.4.400.0130.07319.14
5.4.390.0070.08019.23
5.4.380.0100.07018.98
5.4.370.0170.07018.95
5.4.360.0100.07019.25
5.4.350.0100.07319.18
5.4.340.0130.07019.03
5.4.320.0100.03719.18
5.4.310.0030.07719.19
5.4.300.0130.06719.34
5.4.290.0030.07319.18
5.4.280.0100.07719.02
5.4.270.0170.03319.28
5.4.260.0200.06719.31
5.4.250.0100.06019.04
5.4.240.0130.06718.94
5.4.230.0100.07319.18
5.4.220.0030.08019.33
5.4.210.0030.07719.01
5.4.200.0070.07719.16
5.4.190.0000.05319.08
5.4.180.0070.08019.00
5.4.170.0130.06319.16
5.4.160.0070.07019.24
5.4.150.0130.07319.07
5.4.140.0070.08016.38
5.4.130.0100.04316.43
5.4.120.0030.08016.52
5.4.110.0030.08016.58
5.4.100.0000.07016.43
5.4.90.0070.06316.41
5.4.80.0070.06716.54
5.4.70.0100.07016.30
5.4.60.0070.07716.29
5.4.50.0100.04016.56
5.4.40.0070.06716.57
5.4.30.0100.06716.44
5.4.20.0100.06716.44
5.4.10.0030.04716.43
5.4.00.0100.06315.95
5.3.290.0170.06314.68
5.3.280.0070.07714.60
5.3.270.0030.08314.63
5.3.260.0070.07014.46
5.3.250.0070.07314.63
5.3.240.0070.07714.73
5.3.230.0070.08014.60
5.3.220.0100.06014.79
5.3.210.0130.06714.55
5.3.200.0100.07014.64
5.3.190.0030.07314.57
5.3.180.0000.08314.70
5.3.170.0100.04014.68
5.3.160.0070.07014.58
5.3.150.0130.04314.57
5.3.140.0070.07714.51
5.3.130.0070.07314.77
5.3.120.0000.05314.77
5.3.110.0100.07014.53
5.3.100.0070.07314.17
5.3.90.0070.05714.11
5.3.80.0030.08014.14
5.3.70.0100.05714.25
5.3.60.0100.06714.14
5.3.50.0070.06313.95
5.3.40.0000.07713.96
5.3.30.0100.05714.03
5.3.20.0070.07713.71
5.3.10.0070.07313.70
5.3.00.0130.06013.49
5.2.170.0100.03011.88
5.2.160.0130.05711.88
5.2.150.0030.06011.88
5.2.140.0030.06011.88
5.2.130.0130.05311.88
5.2.120.0070.06011.88
5.2.110.0000.03711.88
5.2.100.0030.06011.88
5.2.90.0170.05011.88
5.2.80.0130.04711.88
5.2.70.0070.03311.88
5.2.60.0100.05711.88
5.2.50.0070.06011.88
5.2.40.0070.06011.88
5.2.30.0100.05311.88
5.2.20.0030.06011.88
5.2.10.0030.06311.88
5.2.00.0070.05711.88
5.1.60.0000.05311.88
5.1.50.0000.05711.88
5.1.40.0000.05011.88
5.1.30.0070.04311.88
5.1.20.0030.05011.88
5.1.10.0000.05711.88
5.1.00.0070.04711.88
5.0.50.0070.04711.88
5.0.40.0030.03311.88
5.0.30.0000.05011.88
5.0.20.0030.04311.88
5.0.10.0030.04011.88
5.0.00.0030.04711.88
4.4.90.0030.03311.88
4.4.80.0030.03711.88
4.4.70.0000.03711.88
4.4.60.0000.03311.88
4.4.50.0030.02711.88
4.4.40.0030.05011.88
4.4.30.0030.01711.88
4.4.20.0030.03311.88
4.4.10.0030.03711.88
4.4.00.0030.05311.88
4.3.110.0000.03311.88
4.3.100.0070.03011.88
4.3.90.0030.03711.88
4.3.80.0030.04711.88
4.3.70.0030.03311.88
4.3.60.0030.03311.88
4.3.50.0030.03311.88
4.3.40.0030.03011.88
4.3.30.0030.01711.88
4.3.20.0070.02711.88
4.3.10.0030.03311.88
4.3.00.0070.02311.88

preferences:
58.7 ms | 400 KiB | 5 Q