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, 0,3); 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)
8.3.40.0200.00318.70
8.3.30.0000.01419.23
8.3.20.0070.00020.20
8.3.10.0040.00423.65
8.3.00.0080.00019.69
8.2.170.0070.00722.96
8.2.160.0100.00320.39
8.2.150.0000.00824.18
8.2.140.0090.00024.66
8.2.130.0030.00526.16
8.2.120.0050.00319.48
8.2.110.0000.01119.13
8.2.100.0040.00717.72
8.2.90.0040.00419.06
8.2.80.0000.00817.97
8.2.70.0050.00317.63
8.2.60.0080.00018.05
8.2.50.0040.00418.07
8.2.40.0000.00818.34
8.2.30.0050.00319.52
8.2.20.0050.00317.76
8.2.10.0040.00418.14
8.2.00.0000.00817.68
8.1.270.0040.00423.66
8.1.260.0070.00026.35
8.1.250.0070.00028.09
8.1.240.0060.00322.58
8.1.230.0040.00820.85
8.1.220.0040.00418.77
8.1.210.0070.00418.89
8.1.200.0080.00017.23
8.1.190.0040.00417.41
8.1.180.0000.00818.10
8.1.170.0080.00018.69
8.1.160.0040.00418.87
8.1.150.0050.00318.99
8.1.140.0040.00417.53
8.1.130.0030.00317.78
8.1.120.0030.00617.51
8.1.110.0040.00417.54
8.1.100.0000.00817.56
8.1.90.0050.00317.42
8.1.80.0040.00417.45
8.1.70.0030.00317.36
8.1.60.0050.00317.54
8.1.50.0030.00617.53
8.1.40.0040.00417.53
8.1.30.0060.00317.69
8.1.20.0000.00717.68
8.1.10.0060.00317.60
8.1.00.0040.00417.43
8.0.300.0060.00319.88
8.0.290.0030.00317.18
8.0.280.0030.00318.53
8.0.270.0000.00717.22
8.0.260.0030.00317.20
8.0.250.0070.00016.96
8.0.240.0040.00416.98
8.0.230.0000.00717.02
8.0.220.0000.00717.01
8.0.210.0060.00316.86
8.0.200.0030.00316.92
8.0.190.0030.00517.01
8.0.180.0000.00716.82
8.0.170.0030.00516.95
8.0.160.0060.00316.85
8.0.150.0050.00316.96
8.0.140.0000.00716.93
8.0.130.0030.00313.36
8.0.120.0040.00416.78
8.0.110.0070.00016.85
8.0.100.0030.00516.78
8.0.90.0030.00316.95
8.0.80.0090.00616.93
8.0.70.0040.00416.83
8.0.60.0040.00416.96
8.0.50.0050.00217.04
8.0.30.0140.00717.14
8.0.20.0150.00417.40
8.0.10.0070.00017.09
8.0.00.0110.00616.99
7.4.330.0020.00215.05
7.4.320.0070.00016.56
7.4.300.0030.00316.63
7.4.290.0030.00716.46
7.4.280.0050.00316.63
7.4.270.0030.00316.46
7.4.260.0000.00716.46
7.4.250.0030.00516.46
7.4.240.0000.00716.62
7.4.230.0000.00716.36
7.4.220.0160.00616.65
7.4.210.0080.00816.46
7.4.200.0000.00716.69
7.4.160.0080.00816.43
7.4.150.0130.00717.40
7.4.140.0130.00717.86
7.4.130.0050.01216.52
7.4.120.0120.00716.50
7.4.110.0080.00816.54
7.4.100.0090.01416.46
7.4.90.0090.01216.38
7.4.80.0060.01619.39
7.4.70.0130.00916.39
7.4.60.0070.00816.54
7.4.50.0000.00616.58
7.4.40.0120.00416.52
7.4.30.0090.00616.32
7.4.00.0130.00315.24
7.3.330.0030.00313.21
7.3.320.0000.00513.24
7.3.310.0030.00316.39
7.3.300.0070.00016.39
7.3.290.0080.00916.38
7.3.280.0080.00816.34
7.3.270.0110.01117.40
7.3.260.0110.00616.48
7.3.250.0070.01316.56
7.3.240.0130.01016.24
7.3.230.0060.01216.39
7.3.210.0080.01116.35
7.3.200.0100.00719.39
7.3.190.0070.01016.64
7.3.180.0140.00716.43
7.3.170.0100.00616.38
7.3.160.0060.00916.66
7.2.330.0090.01016.69
7.2.320.0120.00316.40
7.2.310.0140.00716.62
7.2.300.0000.01716.52
7.2.290.0070.01116.42
7.2.00.0030.01019.31
7.1.200.0060.00315.90
7.1.100.0040.01218.05
7.1.70.0030.01317.19
7.1.60.0130.01019.34
7.1.50.0220.01634.70
7.1.00.0000.08022.44
7.0.200.0000.00716.89
7.0.140.0000.03321.99
7.0.90.0170.04019.93
7.0.80.0170.08019.84
7.0.70.0130.05019.93
7.0.60.0170.04319.95
7.0.50.0200.06720.23
7.0.40.0130.07720.13
7.0.30.0130.03320.02
7.0.20.0070.04020.08
7.0.10.0000.04720.08
7.0.00.0100.04320.18
5.6.240.0070.04720.63
5.6.230.0130.07720.68
5.6.220.0030.04720.67
5.6.210.0100.07720.52
5.6.200.0100.07321.02
5.6.190.0170.05720.98
5.6.180.0100.03721.07
5.6.170.0130.03321.03
5.6.160.0030.04321.02
5.6.150.0000.05321.04
5.6.140.0030.03721.02
5.6.130.0000.04321.08
5.6.120.0070.04021.07
5.6.110.0100.06321.09
5.6.100.0100.03321.10
5.6.90.0100.03721.06
5.6.80.0000.04320.42
5.6.70.0030.05020.48
5.6.60.0030.04020.32
5.6.50.0030.05320.48
5.6.40.0000.04020.31
5.6.30.0030.04020.46
5.6.20.0030.04020.46
5.6.10.0000.04020.43
5.6.00.0100.04020.39
5.5.380.0100.07320.41
5.5.370.0100.05020.40
5.5.360.0200.07320.55
5.5.350.0100.07720.45
5.5.340.0030.08020.83
5.5.330.0100.04720.73
5.5.320.0070.07020.92
5.5.310.0100.03720.75
5.5.300.0070.04020.82
5.5.290.0030.04020.87
5.5.280.0100.03720.85
5.5.270.0100.03320.90
5.5.260.0130.05020.86
5.5.250.0030.04020.56
5.5.240.0070.04320.24
5.5.230.0030.03720.25
5.5.220.0000.04720.13
5.5.210.0100.02720.30
5.5.200.0100.03320.21
5.5.190.0070.05020.08
5.5.180.0030.04020.11
5.5.160.0030.04020.17
5.5.150.0000.04320.22
5.5.140.0070.04020.27
5.5.130.0030.04320.10
5.5.120.0070.03720.27
5.5.110.0030.06720.20
5.5.100.0130.07720.00
5.5.90.0030.04020.09
5.5.80.0030.04019.94
5.5.70.0100.04020.03
5.5.60.0070.03320.06
5.5.50.0030.04020.07
5.5.40.0070.08020.04
5.5.30.0130.07019.99
5.5.20.0100.06320.12
5.5.10.0030.04719.96
5.5.00.0000.06720.05
5.4.450.0030.05719.45
5.4.440.0100.07319.38
5.4.430.0030.06719.37
5.4.420.0170.05719.39
5.4.410.0030.04719.39
5.4.400.0070.03719.13
5.4.390.0100.03718.98
5.4.380.0030.06319.12
5.4.370.0030.03718.80
5.4.360.0000.03719.23
5.4.350.0000.03719.13
5.4.340.0070.04719.23
5.4.320.0030.03719.08
5.4.310.0100.03019.23
5.4.300.0000.04018.94
5.4.290.0030.03319.07
5.4.280.0100.03318.78
5.4.270.0070.04019.23
5.4.260.0070.03019.04
5.4.250.0030.03319.00
5.4.240.0030.04719.02
5.4.230.0130.05019.14
5.4.220.0000.04019.09
5.4.210.0030.05019.02
5.4.200.0070.06719.04
5.4.190.0000.04719.01
5.4.180.0100.07019.11
5.4.170.0130.07719.00
5.4.160.0100.07319.02
5.4.150.0100.07019.21
5.4.140.0070.05316.26
5.4.130.0100.07016.07
5.4.120.0030.07716.21
5.4.110.0070.07016.21
5.4.100.0170.05716.36
5.4.90.0130.06016.34
5.4.80.0070.05716.39
5.4.70.0170.06316.32
5.4.60.0130.07016.28
5.4.50.0030.06316.18
5.4.40.0130.06716.26
5.4.30.0070.06016.28
5.4.20.0130.05716.41
5.4.10.0130.06716.14
5.4.00.0030.05015.67
5.3.290.0100.03314.65
5.3.280.0030.04014.41
5.3.270.0070.05714.46
5.3.260.0030.04314.58
5.3.250.0070.05314.46
5.3.240.0030.07714.55
5.3.230.0100.07014.45
5.3.220.0030.05014.43
5.3.210.0070.04014.43
5.3.200.0030.05314.51
5.3.190.0030.04314.57
5.3.180.0100.07014.55
5.3.170.0070.04014.54
5.3.160.0000.08314.55
5.3.150.0030.07714.59
5.3.140.0130.06714.55
5.3.130.0030.04714.41
5.3.120.0100.07014.37
5.3.110.0000.04314.41
5.3.100.0030.07714.03
5.3.90.0000.04714.00
5.3.80.0030.03713.97
5.3.70.0070.07013.96
5.3.60.0000.07313.93
5.3.50.0030.07013.77
5.3.40.0100.07013.80
5.3.30.0030.07713.88
5.3.20.0030.07713.65
5.3.10.0070.06713.51
5.3.00.0130.05013.61
5.2.170.0130.05310.96
5.2.160.0070.03311.10
5.2.150.0100.04711.18
5.2.140.0000.06310.96
5.2.130.0130.05311.11
5.2.120.0030.05011.15
5.2.110.0100.06011.12
5.2.100.0000.03710.91
5.2.90.0030.05711.09
5.2.80.0030.06311.14
5.2.70.0030.06310.94
5.2.60.0030.06311.04
5.2.50.0030.05710.84
5.2.40.0000.04011.04
5.2.30.0100.05710.97
5.2.20.0030.03010.80
5.2.10.0070.04310.72
5.2.00.0070.05710.76
5.1.60.0030.0509.99
5.1.50.0070.0479.99
5.1.40.0030.05010.04
5.1.30.0170.04010.38
5.1.20.0100.02310.41
5.1.10.0170.0409.91
5.1.00.0070.05710.06
5.0.50.0030.0438.53
5.0.40.0070.0278.43
5.0.30.0100.0508.21
5.0.20.0130.0378.04
5.0.10.0000.0478.01
5.0.00.0000.0608.25
4.4.90.0070.0307.14
4.4.80.0000.0377.14
4.4.70.0000.0437.14
4.4.60.0130.0237.14
4.4.50.0070.0277.14
4.4.40.0070.0507.14
4.4.30.0000.0407.14
4.4.20.0000.0377.14
4.4.10.0030.0277.14
4.4.00.0000.0437.14
4.3.110.0070.0307.14
4.3.100.0030.0337.14
4.3.90.0000.0277.14
4.3.80.0030.0337.14
4.3.70.0030.0277.14
4.3.60.0070.0207.14
4.3.50.0030.0337.14
4.3.40.0000.0477.14
4.3.30.0070.0307.14
4.3.20.0000.0237.14
4.3.10.0000.0377.14
4.3.00.0030.0337.14

preferences:
46.18 ms | 400 KiB | 5 Q