3v4l.org

run code in 300+ PHP versions simultaneously
<?php class C implements JsonSerializable { var $a = 'lol'; var $b = 'fa'; public function jsonSerialize() { $aux = clone($this); unset($aux->a); return $aux; } } echo json_encode(new C());

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)
8.3.60.0200.03334.32
8.3.50.0320.02034.13
8.3.40.0230.03035.88
8.3.30.0260.02637.17
8.3.20.0130.01637.29
8.3.10.0200.01738.20
8.3.00.0170.02038.45
8.2.180.0430.02656.23
8.2.170.0430.01748.14
8.2.160.0130.02449.21
8.2.150.0240.01448.20
8.2.140.0190.01648.11
8.2.130.0150.00650.39
8.2.120.0090.01248.74
8.2.110.0140.01750.00
8.2.100.0290.02047.50
8.2.90.0140.01848.42
8.2.80.0220.01347.41
8.2.70.0200.01646.88
8.2.60.0130.02347.27
8.2.50.0210.01447.00
8.2.40.0220.01247.53
8.2.30.0110.02547.32
8.2.20.0150.01547.09
8.2.10.0130.01747.05
8.2.00.0260.01046.94
8.1.280.0450.02857.88
8.1.270.0210.00748.69
8.1.260.0340.01449.59
8.1.250.0150.01251.94
8.1.240.0100.01652.07
8.1.230.0230.02948.44
8.1.220.0160.01647.03
8.1.210.0180.01446.85
8.1.200.0170.01746.98
8.1.190.0160.02247.00
8.1.180.0070.02446.85
8.1.170.0100.02348.07
8.1.160.0160.01651.19
8.1.150.0180.01847.86
8.1.140.0190.01646.63
8.1.130.0200.01047.25
8.1.120.0170.01646.92
8.1.110.0230.01046.87
8.1.100.0100.02446.89
8.1.90.0130.01946.88
8.1.80.0170.01446.86
8.1.70.0130.01346.79
8.1.60.0250.01347.04
8.1.50.0130.02346.79
8.1.40.0140.02146.97
8.1.30.0070.02447.01
8.1.20.0130.01946.96
8.1.10.0180.01857.32
8.1.00.0370.01057.40
8.0.300.0200.01756.79
8.0.290.0130.02356.68
8.0.280.0210.01757.96
8.0.270.0170.02056.97
8.0.260.0220.01956.57
8.0.250.0070.03156.50
8.0.240.0300.01356.58
8.0.230.0270.01456.52
8.0.220.0250.01856.49
8.0.210.0250.01656.48
8.0.200.0100.02456.55
8.0.190.0230.02056.61
8.0.180.0300.01356.55
8.0.170.0160.02356.44
8.0.160.0190.01956.42
8.0.150.0220.01556.38
8.0.140.0230.02256.46
8.0.130.0270.01353.05
8.0.120.0110.02856.41
8.0.110.0100.02656.48
8.0.100.0170.02056.34
8.0.90.0170.02156.47
8.0.80.0360.04056.46
8.0.70.0090.02556.46
8.0.60.0200.01756.54
8.0.50.0210.01556.50
8.0.30.0480.03356.74
8.0.20.0470.05056.91
8.0.10.0180.01556.71
8.0.00.0440.06956.17
7.4.330.0200.02052.96
7.4.320.0210.01456.14
7.4.300.0100.02456.03
7.4.290.0220.01856.07
7.4.280.0210.02456.20
7.4.270.0200.02356.09
7.4.260.0270.01452.90
7.4.250.0200.02355.95
7.4.240.0130.02356.07
7.4.230.0240.01456.18
7.4.220.0680.09456.13
7.4.210.0460.06556.18
7.4.200.0140.02456.01
7.4.190.0140.02156.33
7.4.160.0490.05256.28
7.4.150.0400.04756.27
7.4.140.0470.05156.25
7.4.130.0350.05256.11
7.4.120.0370.05556.21
7.4.110.0290.05655.96
7.4.100.0450.04256.30
7.4.90.0390.05656.11
7.4.80.0430.05356.37
7.4.70.0360.05656.05
7.4.60.0540.07756.04
7.4.50.0180.02956.03
7.4.40.0170.03756.00
7.4.30.0570.04056.10
7.4.00.0320.01854.48
7.3.330.0200.01753.07
7.3.320.0260.01652.81
7.3.310.0210.01755.95
7.3.300.0180.01855.95
7.3.290.0330.05055.96
7.3.280.0430.06555.88
7.3.270.0390.05655.86
7.3.260.0300.06056.01
7.3.250.0330.07255.99
7.3.240.0530.04655.81
7.3.230.0490.03956.33
7.3.210.0480.04856.02
7.3.200.0440.04855.89
7.3.190.0630.05055.86
7.3.180.0460.04355.89
7.3.170.0320.05555.93
7.3.160.0600.08056.03
7.3.120.0240.02454.24
7.3.70.0340.03054.10
7.3.60.0380.03254.36
7.3.50.0450.02454.01
7.3.40.0400.03354.36
7.3.30.0350.03454.33
7.3.20.1460.01354.67
7.3.10.1590.01454.39
7.3.00.2250.02054.61
7.2.330.0260.05555.67
7.2.320.0450.08455.96
7.2.310.0460.03956.12
7.2.300.0630.01755.98
7.2.290.0300.07955.91
7.2.200.0410.04454.38
7.2.190.0520.00654.02
7.2.180.0420.02954.21
7.2.170.0360.02654.45
7.2.160.0370.03754.29
7.2.150.1980.02754.60
7.2.140.2180.02754.61
7.2.130.1680.02354.83
7.2.120.2120.03454.65
7.2.110.2030.03554.55
7.2.100.1950.03054.81
7.2.90.1910.02354.71
7.2.80.1010.03255.44
7.2.70.1210.03554.77
7.2.60.0940.02855.89
7.2.50.1010.03054.77
7.2.40.1430.02354.68
7.2.30.0770.02454.77
7.2.20.0670.02154.50
7.2.10.0630.02054.69
7.2.00.0470.04354.71
7.1.300.1190.03053.76
7.1.290.1130.04653.74
7.1.280.1130.02853.81
7.1.270.2370.03353.55
7.1.260.1750.02853.63
7.1.250.2510.02953.87
7.1.240.1550.03553.55
7.1.230.2150.03353.57
7.1.220.1900.03053.61
7.1.210.2420.03853.80
7.1.200.0620.02753.72
7.1.190.1030.02053.53
7.1.180.0860.04853.60
7.1.170.0940.03353.32
7.1.160.0490.04053.64
7.1.150.1030.03653.80
7.1.140.0550.03653.45
7.1.130.0570.03053.63
7.1.120.0500.02353.65
7.1.110.0560.03653.75
7.1.100.0490.03953.63
7.1.90.0860.02953.86
7.1.80.1000.01553.68
7.1.70.0600.04154.14
7.1.60.0680.03554.58
7.1.50.0500.04054.18
7.1.40.1380.02253.28
7.1.30.1590.02053.76
7.1.20.0980.04653.59
7.1.10.1010.03153.55
7.1.00.0590.04156.80
7.0.330.1980.03653.68
7.0.320.1430.04053.67
7.0.310.1000.04853.33
7.0.300.0900.03553.69
7.0.290.0490.03353.41
7.0.280.0660.02553.57
7.0.270.0460.03653.64
7.0.260.0510.04353.90
7.0.250.0330.05553.86
7.0.240.0540.03153.89
7.0.230.1720.03153.75
7.0.220.1020.04253.57
7.0.210.0690.05053.38
7.0.200.3050.03354.55
7.0.190.1080.03753.68
7.0.180.0990.03353.40
7.0.170.1570.04753.59
7.0.160.1110.04753.71
7.0.150.0820.05753.67
7.0.140.0540.06656.90
7.0.130.1130.04153.82
7.0.120.1060.04753.63
7.0.110.1520.03953.88
7.0.100.1190.03853.70
7.0.90.3870.06456.77
7.0.80.3140.04456.68
7.0.70.3890.06356.47
7.0.60.3620.05356.62
7.0.50.4100.04557.08
7.0.40.0540.07341.03
7.0.30.0540.07340.95
7.0.20.0420.07240.99
7.0.10.0400.06641.04
7.0.00.1180.08041.04
5.6.400.0170.02725.63
5.6.390.0280.01325.46
5.6.380.0310.01025.69
5.6.370.0230.01225.65
5.6.360.0210.01525.85
5.6.350.0320.00825.85
5.6.340.0230.01825.61
5.6.330.0180.02325.81
5.6.320.0150.01825.90
5.6.310.0200.01825.42
5.6.300.0290.01125.80
5.6.290.0270.01725.58
5.6.280.0120.05228.69
5.6.270.0310.00725.70
5.6.260.0190.02625.79
5.6.250.0320.01125.55
5.6.240.0220.04228.81
5.6.230.0150.04828.67
5.6.220.0140.03828.82
5.6.210.0220.02428.76
5.6.200.0130.05328.84
5.6.190.0260.04328.94
5.6.180.0210.04828.88
5.6.170.0160.04329.02
5.6.160.0190.04028.98
5.6.150.0170.05228.88
5.6.140.0200.04428.99
5.6.130.0160.04128.88
5.6.120.0220.02928.99
5.6.110.0230.05028.76
5.6.100.0140.03228.92
5.6.90.0230.02628.91
5.6.80.0120.03128.54
5.6.70.0120.02928.59
5.6.60.0200.03028.63
5.6.50.0400.07658.04
5.6.40.0310.07957.86
5.6.30.0150.08158.08
5.6.20.0400.06557.95
5.6.10.0250.07657.87
5.6.00.0340.07957.92
5.5.380.0330.10458.07
5.5.370.0280.06757.84
5.5.360.0390.10058.06
5.5.350.0350.08758.13
5.5.340.0320.07558.17
5.5.330.0290.10058.31
5.5.320.0350.08958.26
5.5.310.0350.08958.05
5.5.300.0300.08658.19
5.5.290.0290.08557.98
5.5.280.0290.10958.26
5.5.270.0320.07158.19
5.5.260.0300.07258.16
5.5.250.0260.09357.96
5.5.240.0330.06957.85
5.5.230.0280.06257.84
5.5.220.0360.06757.84
5.5.210.0290.06857.86
5.5.200.0290.07557.72
5.5.190.0300.07557.80
5.5.180.0270.08357.59
5.5.170.0290.06754.98
5.5.160.0350.07557.69
5.5.150.0290.06757.61
5.5.140.0320.06057.82
5.5.130.0320.09257.82
5.5.120.0350.07357.79
5.5.110.0360.06557.83
5.5.100.0290.07357.85
5.5.90.0310.07957.86
5.5.80.0330.06457.67
5.5.70.0350.06557.80
5.5.60.0380.08357.65
5.5.50.0310.09957.70
5.5.40.0340.08457.87
5.5.30.0360.09057.71
5.5.20.0250.10257.64
5.5.10.0350.07657.70
5.5.00.0250.10457.70
5.4.450.0340.06955.70
5.4.440.0370.08055.61
5.4.430.0400.08355.83
5.4.420.0360.06655.77
5.4.410.0260.07155.76
5.4.400.0180.07555.69
5.4.390.0200.07055.68
5.4.380.0290.07355.50
5.4.370.0280.06855.55
5.4.360.0250.09055.59
5.4.350.0380.06455.66
5.4.340.0310.06155.74
5.4.330.0340.07751.34
5.4.320.0300.07055.65
5.4.310.0310.08455.65
5.4.300.0190.08555.64
5.4.290.0320.06555.60
5.4.280.0270.06355.60
5.4.270.0310.09155.66
5.4.260.0140.07255.51
5.4.250.0330.05755.42
5.4.240.0330.05255.73
5.4.230.0220.08055.41
5.4.220.0220.07055.48
5.4.210.0280.10855.55
5.4.200.0350.09655.53
5.4.190.0260.09055.43
5.4.180.0290.07655.60
5.4.170.0430.09155.36
5.4.160.0320.08655.42
5.4.150.0330.08855.53
5.4.140.0280.07454.34
5.4.130.0280.09354.16
5.4.120.0370.08254.30
5.4.110.0230.07554.24
5.4.100.0250.10154.20
5.4.90.0370.08654.26
5.4.80.0320.09254.27
5.4.70.0310.09854.29
5.4.60.0230.07354.36
5.4.50.0260.10254.21
5.4.40.0250.09954.21
5.4.30.0230.04735.67
5.4.20.0240.07235.85
5.4.10.0170.08135.81
5.4.00.0120.06035.39
5.3.290.0090.01712.39
5.3.280.0070.04012.38
5.3.270.0060.04312.39
5.3.260.0150.04012.45
5.3.250.0090.02812.56
5.3.240.0070.03912.41
5.3.230.0100.02812.48
5.3.220.0050.02312.44
5.3.210.0160.03612.38
5.3.200.0110.03612.39
5.3.190.0050.04412.38
5.3.180.0070.04012.49
5.3.170.0150.02812.46
5.3.160.0110.03512.48
5.3.150.0170.03512.50
5.3.140.0080.03412.45
5.3.130.0050.04112.34
5.3.120.0110.02412.53
5.3.110.0070.03912.35
5.3.100.0030.02812.17
5.3.90.0120.03412.31
5.3.80.0090.03612.20
5.3.70.0090.03112.14
5.3.60.0060.02512.18
5.3.50.0080.03812.19
5.3.40.0060.04012.13
5.3.30.0090.02812.02
5.3.20.0080.02311.92
5.3.10.0090.03711.89
5.3.00.0030.04311.83

preferences:
38.82 ms | 401 KiB | 5 Q