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), $so); $result = @json_encode($arr, 0, 5); var_dump($result, json_last_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)
8.3.70.0110.00716.50
8.3.60.0040.01116.63
8.3.50.0120.00723.01
8.3.40.0100.00718.89
8.3.30.0070.00719.04
8.3.20.0000.00720.31
8.3.10.0040.00421.77
8.3.00.0040.00419.76
8.2.190.0120.01216.77
8.2.180.0070.00716.75
8.2.170.0110.00422.96
8.2.160.0100.00720.47
8.2.150.0080.00024.18
8.2.140.0050.00324.66
8.2.130.0030.00626.16
8.2.120.0090.00019.48
8.2.110.0050.00519.34
8.2.100.0090.00317.83
8.2.90.0030.00619.10
8.2.80.0040.00418.05
8.2.70.0050.00517.75
8.2.60.0000.00818.05
8.2.50.0060.00318.07
8.2.40.0030.00618.34
8.2.30.0000.00719.43
8.2.20.0020.00517.72
8.2.10.0050.00318.01
8.2.00.0000.00817.67
8.1.280.0120.00925.92
8.1.270.0060.00323.98
8.1.260.0030.00526.35
8.1.250.0040.00428.09
8.1.240.0030.00722.42
8.1.230.0070.00420.98
8.1.220.0000.00818.77
8.1.210.0100.00019.16
8.1.200.0090.00017.25
8.1.190.0000.00917.55
8.1.180.0080.00018.10
8.1.170.0000.00918.59
8.1.160.0020.00518.85
8.1.150.0070.00018.90
8.1.140.0040.00417.45
8.1.130.0000.00817.83
8.1.120.0050.00517.47
8.1.110.0020.00517.45
8.1.100.0040.00417.39
8.1.90.0070.00017.41
8.1.80.0000.00717.41
8.1.70.0000.00717.44
8.1.60.0040.00417.47
8.1.50.0030.00517.48
8.1.40.0040.00417.40
8.1.30.0040.00417.54
8.1.20.0060.00317.64
8.1.10.0000.00717.52
8.1.00.0040.00417.54
8.0.300.0030.00620.02
8.0.290.0050.00316.93
8.0.280.0030.00318.42
8.0.270.0030.00317.27
8.0.260.0030.00317.31
8.0.250.0000.00716.83
8.0.240.0000.00616.88
8.0.230.0030.00516.98
8.0.220.0070.00016.94
8.0.210.0030.00516.76
8.0.200.0060.00016.82
8.0.190.0040.00416.95
8.0.180.0070.00016.91
8.0.170.0000.00816.89
8.0.160.0000.00816.89
8.0.150.0000.00716.95
8.0.140.0000.00716.83
8.0.130.0040.00413.34
8.0.120.0000.00816.82
8.0.110.0040.00416.92
8.0.100.0030.00516.92
8.0.90.0000.00716.79
8.0.80.0100.00716.93
8.0.70.0070.00016.91
8.0.60.0000.00716.77
8.0.50.0000.00816.88
8.0.30.0090.01217.22
8.0.20.0160.00617.40
8.0.10.0040.00317.04
8.0.00.0070.01316.77
7.4.330.0000.00615.20
7.4.320.0060.00016.61
7.4.300.0000.00616.50
7.4.290.0080.00316.42
7.4.280.0040.00416.56
7.4.270.0030.00316.38
7.4.260.0070.00016.57
7.4.250.0040.00416.46
7.4.240.0040.00416.62
7.4.230.0070.00016.40
7.4.220.0090.00916.70
7.4.210.0060.00916.58
7.4.200.0000.00816.59
7.4.160.0090.00616.57
7.4.150.0030.01517.40
7.4.140.0070.01417.86
7.4.130.0080.00816.50
7.4.120.0100.00916.64
7.4.110.0130.01016.54
7.4.100.0100.01016.53
7.4.90.0070.01116.70
7.4.80.0070.01019.39
7.4.70.0120.00616.43
7.4.60.0070.01116.43
7.4.50.0060.00316.68
7.4.40.0040.01416.51
7.4.30.0140.00316.73
7.4.00.0070.01014.91
7.3.330.0030.00313.25
7.3.320.0060.00013.18
7.3.310.0000.00716.33
7.3.300.0030.00316.19
7.3.290.0080.00816.31
7.3.280.0080.00816.34
7.3.270.0150.00617.40
7.3.260.0130.00416.55
7.3.250.0070.01016.53
7.3.240.0130.00316.23
7.3.230.0060.01016.60
7.3.210.0030.01416.35
7.3.200.0080.01519.39
7.3.190.0070.01016.61
7.3.180.0100.00616.54
7.3.170.0030.01316.34
7.3.160.0060.00916.53
7.2.330.0090.00816.29
7.2.320.0070.01016.43
7.2.310.0070.01016.80
7.2.300.0100.00616.50
7.2.290.0140.00716.82
7.2.00.0080.00819.35
7.1.100.0040.00818.13
7.1.70.0030.00316.93
7.1.60.0080.00819.34
7.1.50.0140.01116.94
7.1.00.0000.07722.37
7.0.200.0040.00416.88
7.0.140.0000.07322.18
7.0.90.0670.08319.91
7.0.80.0630.07319.99
7.0.70.0500.07719.91
7.0.60.0270.07319.88
7.0.50.0570.07720.29
7.0.40.0130.07319.95
7.0.30.0100.07319.95
7.0.20.0130.06320.11
7.0.10.0170.07320.07
7.0.00.0030.08720.09
5.6.280.0070.07020.89
5.6.240.0030.05020.66
5.6.230.0030.08320.63
5.6.220.0030.07020.68
5.6.210.0000.09020.64
5.6.200.0100.04321.04
5.6.190.0070.06321.11
5.6.180.0030.07721.04
5.6.170.0070.06020.94
5.6.160.0100.06020.96
5.6.150.0100.05021.00
5.6.140.0230.02721.02
5.6.130.0130.07321.07
5.6.120.0130.06321.08
5.6.110.0100.04721.06
5.6.100.0100.08021.02
5.6.90.0100.07721.05
5.6.80.0170.07020.41
5.6.70.0130.07320.40
5.6.60.0030.08720.45
5.6.50.0100.07720.38
5.6.40.0130.07320.46
5.6.30.0030.04320.40
5.6.20.0100.04320.43
5.6.10.0130.07020.48
5.6.00.0070.08020.41
5.5.380.0130.07020.30
5.5.370.0070.08720.55
5.5.360.0030.06320.39
5.5.350.0130.07320.45
5.5.340.0070.04320.83
5.5.330.0070.05020.91
5.5.320.0070.05020.82
5.5.310.0030.08320.88
5.5.300.0100.07720.82
5.5.290.0030.08720.88
5.5.280.0170.06020.85
5.5.270.0130.07020.79
5.5.260.0070.08320.71
5.5.250.0100.07720.69
5.5.240.0130.08020.31
5.5.230.0070.08020.27
5.5.220.0100.06720.16
5.5.210.0130.07020.28
5.5.200.0070.08019.98
5.5.190.0000.04320.17
5.5.180.0130.07320.27
5.5.160.0030.07720.20
5.5.150.0100.07720.16
5.5.140.0200.06720.15
5.5.130.0100.08020.23
5.5.120.0130.04020.07
5.5.110.0100.07320.22
5.5.100.0100.07320.10
5.5.90.0130.06320.06
5.5.80.0070.07320.15
5.5.70.0070.04020.06
5.5.60.0070.06720.03
5.5.50.0200.06320.08
5.5.40.0100.07720.04
5.5.30.0030.05020.13
5.5.20.0070.08320.14
5.5.10.0030.08020.07
5.5.00.0070.07020.06
5.4.450.0170.07019.36
5.4.440.0230.04719.33
5.4.430.0070.08019.23
5.4.420.0070.08319.38
5.4.410.0070.07019.21
5.4.400.0100.07318.99
5.4.390.0000.05318.89
5.4.380.0100.07019.11
5.4.370.0030.06718.96
5.4.360.0030.08019.25
5.4.350.0200.05718.93
5.4.340.0070.04018.94
5.4.320.0070.07018.98
5.4.310.0130.06019.23
5.4.300.0170.07318.77
5.4.290.0200.06018.93
5.4.280.0030.07019.20
5.4.270.0100.05318.96
5.4.260.0070.07019.07
5.4.250.0030.05319.07
5.4.240.0030.05719.13
5.4.230.0070.07318.77
5.4.220.0100.07019.24
5.4.210.0100.07318.89
5.4.200.0100.07719.03
5.4.190.0070.08018.94
5.4.180.0130.06719.01
5.4.170.0070.07718.76
5.4.160.0170.04319.12
5.4.150.0030.07318.76
5.4.140.0070.07016.23
5.4.130.0100.05016.28
5.4.120.0130.07016.31
5.4.110.0100.07316.22
5.4.100.0100.06316.24
5.4.90.0100.06716.25
5.4.80.0030.07016.34
5.4.70.0100.07016.29
5.4.60.0000.06016.38
5.4.50.0070.06016.32
5.4.40.0130.06716.25
5.4.30.0070.07316.39
5.4.20.0170.06316.28
5.4.10.0070.07316.40
5.4.00.0070.07015.67
5.3.290.0100.07014.52
5.3.280.0070.07014.50
5.3.270.0100.06314.61
5.3.260.0170.04314.44
5.3.250.0100.07314.57
5.3.240.0100.06714.60
5.3.230.0070.07714.45
5.3.220.0100.06014.53
5.3.210.0070.08014.52
5.3.200.0100.06014.54
5.3.190.0000.07714.52
5.3.180.0000.06014.40
5.3.170.0170.07014.57
5.3.160.0030.07314.50
5.3.150.0070.07714.48
5.3.140.0100.07714.55
5.3.130.0100.07014.50
5.3.120.0030.05014.51
5.3.110.0030.06314.53
5.3.100.0100.07013.98
5.3.90.0170.05713.86
5.3.80.0200.06313.96
5.3.70.0070.04714.02
5.3.60.0030.06314.00
5.3.50.0100.07013.91
5.3.40.0100.06313.89
5.3.30.0100.06313.68
5.3.20.0100.04313.60
5.3.10.0130.05013.60
5.3.00.0070.05313.63
5.2.170.0030.06711.19
5.2.160.0130.03711.12
5.2.150.0170.06011.16
5.2.140.0030.06011.13
5.2.130.0170.04011.13
5.2.120.0030.04711.05
5.2.110.0030.06711.09
5.2.100.0070.06011.08
5.2.90.0000.04711.15
5.2.80.0070.03310.88
5.2.70.0070.06311.09
5.2.60.0070.06010.97
5.2.50.0000.06711.07
5.2.40.0130.04311.07
5.2.30.0100.06011.04
5.2.20.0030.05711.02
5.2.10.0130.06010.91
5.2.00.0030.05310.64
5.1.60.0070.0379.99
5.1.50.0000.0539.85
5.1.40.0070.0539.82
5.1.30.0030.06310.20
5.1.20.0130.04710.27
5.1.10.0070.05010.11
5.1.00.0170.04010.08
5.0.50.0030.0438.53
5.0.40.0000.0438.45
5.0.30.0000.0538.25
5.0.20.0070.0408.03
5.0.10.0030.0438.28
5.0.00.0030.0678.04
4.4.90.0030.0337.46
4.4.80.0000.0407.46
4.4.70.0030.0377.46
4.4.60.0000.0477.46
4.4.50.0000.0377.46
4.4.40.0000.0537.46
4.4.30.0030.0277.46
4.4.20.0000.0407.46
4.4.10.0000.0377.46
4.4.00.0030.0537.46
4.3.110.0130.0237.46
4.3.100.0070.0307.46
4.3.90.0070.0277.46
4.3.80.0030.0407.46
4.3.70.0100.0307.46
4.3.60.0070.0277.46
4.3.50.0100.0277.46
4.3.40.0030.0507.46
4.3.30.0030.0337.46
4.3.20.0030.0337.46
4.3.10.0000.0377.46
4.3.00.0030.0277.46

preferences:
50.64 ms | 401 KiB | 5 Q