3v4l.org

run code in 300+ PHP versions simultaneously
<?php $so = new \stdClass; $so->a = 1; $obj = new \stdClass(); $obj->z = $so; $arr = array(new \stdClass(), array('a' => 1, 'b' => $so, 'c' => $obj, array($obj)), $so); $result = @json_encode($so, 0,1); var_dump($result, json_last_error(), json_last_error_msg());

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)
8.3.60.0150.00018.55
8.3.50.0090.00922.88
8.3.40.0130.00618.81
8.3.30.0060.00919.09
8.3.20.0000.00820.21
8.3.10.0040.00421.76
8.3.00.0030.00519.67
8.2.180.0060.01618.29
8.2.170.0150.00022.96
8.2.160.0030.01020.52
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0070.00026.16
8.2.120.0040.00419.38
8.2.110.0060.00319.35
8.2.100.0030.01317.72
8.2.90.0000.00919.31
8.2.80.0040.00417.97
8.2.70.0060.00317.63
8.2.60.0030.00618.05
8.2.50.0080.00018.07
8.2.40.0040.00418.21
8.2.30.0050.00219.48
8.2.20.0040.00417.78
8.2.10.0000.00718.22
8.2.00.0000.00717.66
8.1.280.0120.00625.92
8.1.270.0040.00423.84
8.1.260.0070.00726.35
8.1.250.0070.00028.09
8.1.240.0040.00423.92
8.1.230.0000.01220.89
8.1.220.0050.00318.77
8.1.210.0040.00419.10
8.1.200.0060.00317.22
8.1.190.0000.00817.41
8.1.180.0050.00318.10
8.1.170.0000.00818.39
8.1.160.0040.00418.96
8.1.150.0040.00418.92
8.1.140.0080.00017.41
8.1.130.0000.00717.86
8.1.120.0070.00317.38
8.1.110.0030.00517.39
8.1.100.0070.00017.48
8.1.90.0040.00417.39
8.1.80.0040.00417.47
8.1.70.0040.00417.34
8.1.60.0030.00617.52
8.1.50.0030.00617.54
8.1.40.0000.00717.43
8.1.30.0000.00817.69
8.1.20.0040.00417.68
8.1.10.0050.00317.54
8.1.00.0040.00417.58
8.0.300.0050.00219.85
8.0.290.0000.00717.16
8.0.280.0070.00018.48
8.0.270.0030.00317.17
8.0.260.0060.00017.36
8.0.250.0030.00317.05
8.0.240.0030.00616.92
8.0.230.0000.00717.03
8.0.220.0030.00316.95
8.0.210.0070.00016.89
8.0.200.0030.00317.00
8.0.190.0030.00517.01
8.0.180.0050.00216.99
8.0.170.0060.00316.95
8.0.160.0030.00516.96
8.0.150.0070.00016.98
8.0.140.0030.00316.77
8.0.130.0030.00513.30
8.0.120.0000.00716.80
8.0.110.0000.00716.91
8.0.100.0000.00816.76
8.0.90.0040.00416.95
8.0.80.0070.01316.97
8.0.70.0000.00816.93
8.0.60.0070.00016.82
8.0.50.0000.00716.82
8.0.30.0100.01017.31
8.0.20.0090.00917.40
8.0.10.0070.00017.00
8.0.00.0120.00816.71
7.4.330.0000.00515.02
7.4.320.0000.00616.61
7.4.300.0030.00316.63
7.4.290.0100.00016.63
7.4.280.0030.00716.66
7.4.270.0000.00716.63
7.4.260.0070.00016.45
7.4.250.0070.00016.61
7.4.240.0000.00716.49
7.4.230.0000.00716.55
7.4.220.0110.00716.68
7.4.210.0100.01016.60
7.4.200.0030.00316.34
7.4.160.0030.01716.49
7.4.150.0220.00317.40
7.4.140.0070.01417.86
7.4.130.0110.00716.55
7.4.120.0100.00816.52
7.4.110.0070.01116.58
7.4.100.0080.01116.73
7.4.90.0060.01016.33
7.4.80.0200.00019.39
7.4.70.0110.00716.46
7.4.60.0100.00716.62
7.4.50.0000.00716.58
7.4.40.0060.01016.49
7.4.30.0060.01016.69
7.4.00.0000.01715.09
7.3.330.0000.00613.10
7.3.320.0050.00013.28
7.3.310.0030.00316.36
7.3.300.0030.00316.18
7.3.290.0100.00716.34
7.3.280.0060.01116.38
7.3.270.0200.00617.40
7.3.260.0090.00916.61
7.3.250.0130.00516.63
7.3.240.0080.00816.59
7.3.230.0080.00816.65
7.3.210.0060.01616.57
7.3.200.0150.01119.39
7.3.190.0110.00716.43
7.3.180.0110.01116.51
7.3.170.0040.01216.60
7.3.160.0100.00716.30
7.2.330.0030.01516.65
7.2.320.0140.00316.63
7.2.310.0120.00616.44
7.2.300.0120.00416.47
7.2.290.0070.01016.36
7.2.60.0090.00316.39
7.2.00.0030.00919.11
7.1.200.0170.00715.95
7.1.100.0070.00717.99
7.1.70.0060.00917.22
7.1.60.0070.01619.34
7.1.50.0200.01734.71
7.1.00.0030.07022.40
7.0.200.0030.00316.78
7.0.140.0070.03022.09
7.0.90.0430.07719.92
7.0.80.0470.06319.96
7.0.70.0630.07019.88
7.0.60.0570.05019.96
7.0.50.0600.06720.34
7.0.40.0300.06720.08
7.0.30.0030.08720.14
7.0.20.0170.06020.18
7.0.10.0030.08720.07
7.0.00.0100.07720.02
5.6.280.0100.06721.02
5.6.240.0070.08020.64
5.6.230.0270.06320.56
5.6.220.0070.08320.61
5.6.210.0030.08320.58
5.6.200.0070.06721.17
5.6.190.0100.07021.01
5.6.180.0100.07721.02
5.6.170.0130.07721.07
5.6.160.0170.07321.08
5.6.150.0070.08021.11
5.6.140.0100.07721.16
5.6.130.0000.06021.13
5.6.120.0100.05321.03
5.6.110.0100.08321.02
5.6.100.0130.06321.00
5.6.90.0030.05320.98
5.6.80.0000.06320.46
5.6.70.0100.07020.45
5.6.60.0000.05720.41
5.6.50.0070.08020.37
5.6.40.0030.08320.36
5.6.30.0030.08720.41
5.6.20.0070.05020.42
5.6.10.0030.04020.52
5.6.00.0100.07720.36
5.5.380.0070.07020.36
5.5.370.0100.07720.41
5.5.360.0000.08320.40
5.5.350.0170.07320.41
5.5.340.0100.08320.86
5.5.330.0130.08020.87
5.5.320.0130.07720.86
5.5.310.0030.09020.92
5.5.300.0070.05320.80
5.5.290.0130.07720.64
5.5.280.0130.04320.91
5.5.270.0030.08720.71
5.5.260.0230.07020.75
5.5.250.0100.07720.54
5.5.240.0100.07320.27
5.5.230.0170.05720.26
5.5.220.0100.07320.18
5.5.210.0100.08020.30
5.5.200.0030.08320.19
5.5.190.0030.08020.23
5.5.180.0070.08020.17
5.5.160.0100.07720.25
5.5.150.0030.08020.10
5.5.140.0070.06320.12
5.5.130.0070.07020.13
5.5.120.0070.07320.26
5.5.110.0130.07320.17
5.5.100.0130.06719.98
5.5.90.0070.07720.06
5.5.80.0100.04020.04
5.5.70.0100.07319.99
5.5.60.0130.05720.04
5.5.50.0070.08320.07
5.5.40.0100.07020.02
5.5.30.0030.08019.95
5.5.20.0030.06019.95
5.5.10.0100.07020.07
5.5.00.0100.07720.00
5.4.450.0070.08319.53
5.4.440.0070.08019.39
5.4.430.0230.06319.35
5.4.420.0030.04719.42
5.4.410.0030.07719.00
5.4.400.0130.07318.79
5.4.390.0030.05718.95
5.4.380.0100.06719.00
5.4.370.0100.07719.05
5.4.360.0030.06319.05
5.4.350.0100.07318.95
5.4.340.0070.04719.08
5.4.320.0030.07318.94
5.4.310.0030.04719.10
5.4.300.0070.07719.23
5.4.290.0170.06719.04
5.4.280.0070.06319.16
5.4.270.0030.08318.78
5.4.260.0070.07018.97
5.4.250.0000.05719.02
5.4.240.0000.05319.09
5.4.230.0070.07318.97
5.4.220.0100.07718.84
5.4.210.0000.08018.89
5.4.200.0100.07318.97
5.4.190.0030.07318.97
5.4.180.0070.07718.80
5.4.170.0130.07019.21
5.4.160.0030.07719.07
5.4.150.0070.07719.00
5.4.140.0100.04716.23
5.4.130.0100.06316.33
5.4.120.0130.03016.03
5.4.110.0000.04316.21
5.4.100.0030.07016.42
5.4.90.0000.04316.40
5.4.80.0070.07316.48
5.4.70.0070.05016.20
5.4.60.0000.07016.29
5.4.50.0100.04016.42
5.4.40.0070.07716.29
5.4.30.0070.05316.34
5.4.20.0030.07316.39
5.4.10.0070.07316.33
5.4.00.0130.06715.68
5.3.290.0030.06314.61
5.3.280.0100.07014.41
5.3.270.0100.07314.55
5.3.260.0070.06314.59
5.3.250.0070.08014.60
5.3.240.0130.06714.56
5.3.230.0130.06314.45
5.3.220.0100.06314.52
5.3.210.0100.04314.55
5.3.200.0000.04014.55
5.3.190.0130.03314.55
5.3.180.0000.04714.47
5.3.170.0100.06714.43
5.3.160.0070.07014.38
5.3.150.0100.07014.43
5.3.140.0100.04014.49
5.3.130.0100.07314.38
5.3.120.0000.08314.55
5.3.110.0130.06014.48
5.3.100.0130.06714.00
5.3.90.0130.04313.87
5.3.80.0070.07013.77
5.3.70.0100.07013.99
5.3.60.0000.06014.01
5.3.50.0030.05313.80
5.3.40.0030.07313.92
5.3.30.0130.04013.88
5.3.20.0070.03713.68
5.3.10.0030.06713.66
5.3.00.0000.06713.54
5.2.170.0100.06011.13
5.2.160.0000.07011.13
5.2.150.0000.06011.14
5.2.140.0070.03311.14
5.2.130.0130.05710.96
5.2.120.0070.06011.09
5.2.110.0100.06010.96
5.2.100.0000.06711.14
5.2.90.0070.05711.10
5.2.80.0030.06310.91
5.2.70.0070.04711.09
5.2.60.0030.04710.97
5.2.50.0070.05710.81
5.2.40.0000.04011.05
5.2.30.0100.03010.83
5.2.20.0070.06310.90
5.2.10.0100.05710.98
5.2.00.0100.05010.57
5.1.60.0030.0509.87
5.1.50.0070.0379.98
5.1.40.0070.04310.02
5.1.30.0130.04710.36
5.1.20.0030.03710.39
5.1.10.0030.03010.16
5.1.00.0030.05010.11
5.0.50.0030.0478.40
5.0.40.0000.0238.45
5.0.30.0000.0338.27
5.0.20.0000.0208.25
5.0.10.0000.0208.25
5.0.00.0000.0308.26
4.4.90.0070.0307.55
4.4.80.0070.0337.55
4.4.70.0070.0377.55
4.4.60.0070.0337.55
4.4.50.0000.0407.55
4.4.40.0000.0537.55
4.4.30.0030.0337.55
4.4.20.0000.0407.55
4.4.10.0030.0307.55
4.4.00.0000.0377.55
4.3.110.0000.0177.55
4.3.100.0000.0307.55
4.3.90.0000.0177.55
4.3.80.0000.0237.55
4.3.70.0000.0207.55
4.3.60.0070.0107.55
4.3.50.0000.0177.55
4.3.40.0000.0377.55
4.3.30.0000.0177.55
4.3.20.0000.0177.55
4.3.10.0030.0137.55
4.3.00.0000.0177.55

preferences:
59.75 ms | 401 KiB | 5 Q