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, 0,7); 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)
8.3.60.0080.00818.28
8.3.50.0170.00322.89
8.3.40.0040.01118.97
8.3.30.0070.00719.04
8.3.20.0000.00720.33
8.3.10.0000.00821.86
8.3.00.0040.00419.80
8.2.180.0090.01218.43
8.2.170.0110.01122.96
8.2.160.0030.01020.39
8.2.150.0000.00724.18
8.2.140.0050.00324.66
8.2.130.0030.00626.16
8.2.120.0040.00419.24
8.2.110.0030.00619.38
8.2.100.0000.01117.91
8.2.90.0040.00419.39
8.2.80.0000.00817.97
8.2.70.0040.00417.38
8.2.60.0040.00417.93
8.2.50.0030.00618.07
8.2.40.0090.00018.28
8.2.30.0000.00719.38
8.2.20.0000.00817.83
8.2.10.0040.00418.20
8.2.00.0040.00417.66
8.1.280.0100.00725.92
8.1.270.0080.00023.96
8.1.260.0070.00026.35
8.1.250.0080.00028.09
8.1.240.0030.00622.54
8.1.230.0000.01120.88
8.1.220.0040.00418.77
8.1.210.0100.00019.10
8.1.200.0080.00017.35
8.1.190.0000.00817.54
8.1.180.0040.00418.10
8.1.170.0080.00018.35
8.1.160.0040.00418.80
8.1.150.0040.00418.82
8.1.140.0000.00717.33
8.1.130.0000.00717.96
8.1.120.0030.00717.45
8.1.110.0030.00617.54
8.1.100.0000.00717.37
8.1.90.0030.00317.51
8.1.80.0000.00717.54
8.1.70.0080.00017.44
8.1.60.0040.00417.50
8.1.50.0040.00417.45
8.1.40.0000.00717.61
8.1.30.0000.00817.55
8.1.20.0000.00817.61
8.1.10.0050.00217.62
8.1.00.0040.00417.55
8.0.300.0000.00719.98
8.0.290.0070.00017.18
8.0.280.0040.00418.40
8.0.270.0000.00717.29
8.0.260.0030.00317.29
8.0.250.0060.00016.92
8.0.240.0040.00416.98
8.0.230.0000.00716.93
8.0.220.0040.00416.82
8.0.210.0000.00716.86
8.0.200.0060.00016.97
8.0.190.0000.00716.82
8.0.180.0000.00716.85
8.0.170.0030.00616.93
8.0.160.0040.00416.85
8.0.150.0040.00316.77
8.0.140.0040.00416.79
8.0.130.0030.00313.32
8.0.120.0040.00416.89
8.0.110.0040.00416.89
8.0.100.0040.00416.80
8.0.90.0040.00416.82
8.0.80.0070.01116.88
8.0.70.0040.00416.95
8.0.60.0040.00416.76
8.0.50.0040.00416.99
8.0.30.0110.00816.98
8.0.20.0150.00617.40
8.0.10.0070.00016.87
8.0.00.0080.01016.75
7.4.330.0020.00215.02
7.4.320.0000.00616.56
7.4.300.0060.00016.63
7.4.290.0000.00916.63
7.4.280.0040.00416.44
7.4.270.0030.00316.44
7.4.260.0070.00016.57
7.4.250.0040.00416.52
7.4.240.0030.00416.64
7.4.230.0070.00016.70
7.4.220.0130.01316.63
7.4.210.0070.01316.64
7.4.200.0070.00016.42
7.4.160.0100.00616.54
7.4.150.0110.01417.40
7.4.140.0100.00917.86
7.4.130.0070.00916.57
7.4.120.0080.00916.55
7.4.110.0100.01016.38
7.4.100.0120.00616.49
7.4.90.0070.01216.44
7.4.80.0110.00819.39
7.4.70.0080.00816.63
7.4.60.0100.00616.42
7.4.50.0000.00616.52
7.4.40.0070.00916.32
7.4.30.0070.01016.64
7.4.00.0000.01215.01
7.3.330.0000.00613.11
7.3.320.0000.00513.17
7.3.310.0000.00616.39
7.3.300.0030.00316.33
7.3.290.0080.00716.33
7.3.280.0130.00516.36
7.3.270.0180.00317.40
7.3.260.0080.00816.41
7.3.250.0130.00716.45
7.3.240.0220.00016.34
7.3.230.0110.00616.63
7.3.210.0070.01016.47
7.3.200.0090.01219.39
7.3.190.0120.00616.50
7.3.180.0090.00616.35
7.3.170.0100.00716.41
7.3.160.0040.01216.36
7.2.330.0090.00916.34
7.2.320.0120.00616.76
7.2.310.0190.00416.67
7.2.300.0080.00816.45
7.2.290.0100.00716.35
7.2.60.0040.01116.81
7.1.200.0000.01516.00
7.1.70.0030.01216.92
7.1.60.0130.01019.34
7.1.50.0260.01334.56
7.1.00.0030.07722.54
7.0.200.0000.00716.93
7.0.140.0030.05022.12
7.0.90.0300.04019.89
7.0.80.0330.04019.85
7.0.70.0200.05719.89
7.0.60.0300.03319.94
7.0.50.0200.04020.32
7.0.40.0030.03720.09
7.0.30.0030.05320.12
7.0.20.0100.03320.17
7.0.10.0030.03720.17
7.0.00.0070.04020.14
5.6.280.0100.06721.04
5.6.240.0030.05020.51
5.6.230.0070.05720.62
5.6.220.0070.03720.72
5.6.210.0070.04020.45
5.6.200.0000.04721.04
5.6.190.0030.04320.96
5.6.180.0030.04021.04
5.6.170.0030.04721.06
5.6.160.0030.04021.10
5.6.150.0000.04021.02
5.6.140.0000.04321.03
5.6.130.0100.03321.01
5.6.120.0000.04721.02
5.6.110.0000.04321.08
5.6.100.0030.04021.04
5.6.90.0170.07020.98
5.6.80.0030.04720.52
5.6.70.0030.06020.47
5.6.60.0100.04720.38
5.6.50.0000.07320.42
5.6.40.0130.06020.44
5.6.30.0130.07020.49
5.6.20.0070.05320.30
5.6.10.0070.05020.45
5.6.00.0070.08020.42
5.5.380.0070.04320.56
5.5.370.0070.03720.45
5.5.360.0100.05020.34
5.5.350.0070.04020.36
5.5.340.0000.04320.87
5.5.330.0000.05320.88
5.5.320.0070.03720.77
5.5.310.0030.04320.88
5.5.300.0130.03720.88
5.5.290.0000.06020.63
5.5.280.0030.04320.77
5.5.270.0100.04320.90
5.5.260.0030.09020.63
5.5.250.0000.07720.45
5.5.240.0100.07320.26
5.5.230.0130.05720.17
5.5.220.0100.04020.19
5.5.210.0070.04720.16
5.5.200.0130.07320.22
5.5.190.0030.04720.21
5.5.180.0070.05720.11
5.5.160.0230.06320.20
5.5.150.0070.06020.21
5.5.140.0100.07320.11
5.5.130.0130.07020.12
5.5.120.0130.07720.20
5.5.110.0070.07320.10
5.5.100.0130.04320.07
5.5.90.0100.06320.00
5.5.80.0000.04320.06
5.5.70.0070.07320.06
5.5.60.0000.06020.09
5.5.50.0070.08019.93
5.5.40.0070.07320.05
5.5.30.0070.07319.95
5.5.20.0000.08319.99
5.5.10.0100.07320.04
5.5.00.0100.05720.03
5.4.450.0030.05019.45
5.4.440.0030.04019.21
5.4.430.0030.04719.46
5.4.420.0200.06019.43
5.4.410.0100.06719.31
5.4.400.0030.06718.79
5.4.390.0070.07719.23
5.4.380.0070.07719.03
5.4.370.0070.08019.10
5.4.360.0030.04718.99
5.4.350.0030.04319.03
5.4.340.0030.08019.13
5.4.320.0030.08018.96
5.4.310.0170.06718.78
5.4.300.0170.06018.96
5.4.290.0100.06718.83
5.4.280.0000.06019.13
5.4.270.0030.04318.94
5.4.260.0030.07018.90
5.4.250.0030.04718.89
5.4.240.0070.07719.11
5.4.230.0030.05318.93
5.4.220.0100.08319.07
5.4.210.0070.06018.95
5.4.200.0170.07018.97
5.4.190.0130.06719.11
5.4.180.0030.05318.93
5.4.170.0100.07719.01
5.4.160.0030.04319.20
5.4.150.0030.06019.00
5.4.140.0030.04716.28
5.4.130.0100.04016.33
5.4.120.0030.05316.23
5.4.110.0100.07016.44
5.4.100.0030.07716.30
5.4.90.0070.06716.46
5.4.80.0130.06316.22
5.4.70.0070.04016.40
5.4.60.0070.06316.18
5.4.50.0070.04716.42
5.4.40.0030.07716.47
5.4.30.0130.07016.20
5.4.20.0170.06716.34
5.4.10.0070.07016.27
5.4.00.0100.05715.66
5.3.290.0070.07014.52
5.3.280.0130.06714.58
5.3.270.0100.07314.56
5.3.260.0070.07314.54
5.3.250.0070.07014.46
5.3.240.0070.07714.54
5.3.230.0130.05014.46
5.3.220.0070.07314.48
5.3.210.0070.07714.41
5.3.200.0030.05314.54
5.3.190.0000.06014.43
5.3.180.0030.07714.42
5.3.170.0000.07314.51
5.3.160.0070.06014.51
5.3.150.0100.07014.54
5.3.140.0100.05014.41
5.3.130.0070.06014.36
5.3.120.0030.07714.50
5.3.110.0100.07014.51
5.3.100.0070.07713.89
5.3.90.0130.06714.02
5.3.80.0030.07713.88
5.3.70.0170.06014.02
5.3.60.0030.06314.00
5.3.50.0070.06713.93
5.3.40.0170.06013.90
5.3.30.0130.05313.87
5.3.20.0030.04713.67
5.3.10.0100.05713.63
5.3.00.0030.08013.39
5.2.170.0070.06711.06
5.2.160.0030.06711.16
5.2.150.0000.07010.99
5.2.140.0070.06311.06
5.2.130.0000.06310.92
5.2.120.0030.05311.11
5.2.110.0070.06011.11
5.2.100.0070.05010.98
5.2.90.0070.06011.09
5.2.80.0070.06011.05
5.2.70.0030.06311.08
5.2.60.0130.05711.10
5.2.50.0030.03711.05
5.2.40.0000.04010.96
5.2.30.0100.03710.96
5.2.20.0100.05711.00
5.2.10.0030.06010.80
5.2.00.0070.05010.82
5.1.60.0070.04710.56
5.1.50.0130.04310.56
5.1.40.0070.05010.56
5.1.30.0000.04710.56
5.1.20.0030.05010.56
5.1.10.0070.05010.56
5.1.00.0030.04010.56
5.0.50.0100.03010.56
5.0.40.0070.04010.56
5.0.30.0030.04710.56
5.0.20.0030.04310.56
5.0.10.0030.04310.56
5.0.00.0230.05010.56
4.4.90.0070.03310.56
4.4.80.0070.02010.56
4.4.70.0000.03310.56
4.4.60.0000.03710.56
4.4.50.0070.02710.56
4.4.40.0030.03310.56
4.4.30.0070.01710.56
4.4.20.0070.02310.56
4.4.10.0000.03710.56
4.4.00.0100.04710.56
4.3.110.0070.02710.56
4.3.100.0030.03710.56
4.3.90.0070.02710.56
4.3.80.0030.05010.56
4.3.70.0030.03310.56
4.3.60.0070.02710.56
4.3.50.0030.03010.56
4.3.40.0070.04710.56
4.3.30.0070.03010.56
4.3.20.0000.03710.56
4.3.10.0000.04010.56
4.3.00.0030.02710.56

preferences:
32.61 ms | 401 KiB | 5 Q