3v4l.org

run code in 300+ PHP versions simultaneously
<?php class a {} $obj = new a; $str = json_encode($obj); var_dump($str); var_dump(json_decode($str));

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)
8.3.40.0090.00918.71
8.3.30.0100.00318.96
8.3.20.0040.00419.94
8.3.10.0040.00423.56
8.3.00.0060.00319.25
8.2.170.0090.00622.96
8.2.160.0100.00320.43
8.2.150.0040.00424.18
8.2.140.0070.00424.66
8.2.130.0000.00826.16
8.2.120.0080.00021.04
8.2.110.0100.01020.38
8.2.100.0000.01117.72
8.2.90.0030.00718.03
8.2.80.0040.00417.97
8.2.70.0050.00317.25
8.2.60.0040.00417.80
8.2.50.0030.00618.07
8.2.40.0080.00019.82
8.2.30.0000.00718.03
8.2.20.0070.00017.48
8.2.10.0000.00718.03
8.2.00.0040.00417.60
8.1.270.0080.00022.02
8.1.260.0030.00526.35
8.1.250.0040.00428.09
8.1.240.0060.00322.22
8.1.230.0030.00720.93
8.1.220.0040.00417.74
8.1.210.0060.00318.89
8.1.200.0030.00617.10
8.1.190.0040.00417.13
8.1.180.0080.00018.10
8.1.170.0030.00618.51
8.1.160.0000.00721.91
8.1.150.0040.00418.75
8.1.140.0000.00717.40
8.1.130.0070.00017.76
8.1.120.0050.00217.32
8.1.110.0040.00417.42
8.1.100.0000.00717.38
8.1.90.0000.00817.38
8.1.80.0070.00017.40
8.1.70.0070.00017.32
8.1.60.0030.00617.43
8.1.50.0000.00917.47
8.1.40.0040.00417.46
8.1.30.0030.00717.57
8.1.20.0070.00017.58
8.1.10.0070.00017.36
8.1.00.0040.00417.34
8.0.300.0040.00420.16
8.0.290.0040.00416.63
8.0.280.0040.00418.39
8.0.270.0000.00717.14
8.0.260.0000.00817.20
8.0.250.0070.00016.77
8.0.240.0060.00016.79
8.0.230.0080.00016.75
8.0.220.0040.00416.83
8.0.210.0070.00016.71
8.0.200.0110.00016.80
8.0.190.0040.00416.79
8.0.180.0030.00316.89
8.0.170.0040.00416.74
8.0.160.0040.00416.73
8.0.150.0000.00816.81
8.0.140.0000.00716.82
8.0.130.0030.00313.19
8.0.120.0030.00616.82
8.0.110.0040.00416.90
8.0.100.0080.00016.80
8.0.90.0030.00516.82
8.0.80.0040.01116.78
8.0.70.0040.00416.72
8.0.60.0040.00416.81
8.0.50.0000.00716.81
8.0.30.0080.01317.07
8.0.20.0070.01117.40
8.0.10.0060.00316.88
8.0.00.0080.01116.63
7.4.330.0050.00015.02
7.4.320.0030.00316.34
7.4.300.0000.00616.43
7.4.290.0030.00316.55
7.4.280.0000.00816.53
7.4.270.0000.00716.56
7.4.260.0030.00316.57
7.4.250.0000.00716.40
7.4.240.0000.00716.54
7.4.230.0030.00316.34
7.4.220.0100.00716.52
7.4.210.0190.00316.31
7.4.200.0030.00416.35
7.4.160.0080.00816.37
7.4.150.0190.00317.40
7.4.140.0080.01117.86
7.4.130.0110.00816.37
7.4.120.0150.00116.50
7.4.110.0130.00316.44
7.4.100.0120.00616.46
7.4.90.0040.01516.37
7.4.80.0100.00719.39
7.4.70.0140.01016.41
7.4.60.0160.00016.54
7.4.50.0040.00416.49
7.4.40.0090.00616.59
7.4.30.0060.01116.43
7.4.00.0070.01014.91
7.3.330.0000.00513.25
7.3.320.0000.00513.15
7.3.310.0030.00316.09
7.3.300.0000.00616.18
7.3.290.0080.00616.15
7.3.280.0060.01116.14
7.3.270.0130.01317.40
7.3.260.0100.00716.22
7.3.250.0080.00816.19
7.3.240.0100.01616.22
7.3.230.0110.00716.39
7.3.210.0110.00816.20
7.3.200.0100.00719.39
7.3.190.0090.00916.03
7.3.180.0090.00616.34
7.3.170.0060.01416.34
7.3.160.0130.00416.27
7.3.10.0080.00716.21
7.3.00.0070.00716.20
7.2.330.0100.00916.38
7.2.320.0150.01216.60
7.2.310.0060.01016.42
7.2.300.0100.00716.54
7.2.290.0120.00616.43
7.2.130.0110.00716.64
7.2.120.0100.00316.49
7.2.110.0030.00916.58
7.2.100.0010.01316.29
7.2.90.0050.00716.71
7.2.80.0070.00516.76
7.2.70.0050.00916.72
7.2.60.0050.01016.45
7.2.50.0090.00216.80
7.2.40.0080.00316.62
7.2.30.0130.00316.71
7.2.20.0090.00516.76
7.2.10.0070.00616.72
7.2.00.0080.00717.51
7.1.250.0050.01115.54
7.1.200.0070.00715.76
7.1.100.0000.01318.03
7.1.70.0070.00017.05
7.1.60.0120.01219.11
7.1.50.0000.02416.78
7.1.00.0070.07322.37
7.0.200.0030.00716.57
7.0.140.0030.07322.21
7.0.90.0630.07019.93
7.0.80.0630.07019.89
7.0.70.0600.07319.94
7.0.60.0470.04019.93
7.0.50.0670.06720.32
7.0.40.0130.08320.13
7.0.30.0070.08719.95
7.0.20.0170.07320.11
7.0.10.0070.08320.05
7.0.00.0130.07020.02
5.6.280.0100.06721.11
5.6.240.0030.05320.70
5.6.230.0030.08720.61
5.6.220.0030.08320.63
5.6.210.0130.03720.61
5.6.200.0200.06320.95
5.6.190.0070.07320.96
5.6.180.0000.05020.97
5.6.170.0100.08321.02
5.6.160.0200.07021.10
5.6.150.0170.05721.05
5.6.140.0230.06721.07
5.6.130.0130.08021.17
5.6.120.0070.08021.07
5.6.110.0170.07321.00
5.6.100.0100.07720.92
5.6.90.0100.08720.95
5.6.80.0170.07320.49
5.6.70.0030.07720.48
5.6.60.0130.07320.32
5.6.50.0100.08320.41
5.6.40.0030.04720.40
5.6.30.0130.07320.36
5.6.20.0070.04720.38
5.6.10.0130.07320.45
5.6.00.0070.05020.29
5.5.380.0170.06720.35
5.5.370.0030.08720.29
5.5.360.0070.04320.38
5.5.350.0030.04320.39
5.5.340.0030.09020.77
5.5.330.0130.04020.93
5.5.320.0030.08720.90
5.5.310.0030.08320.82
5.5.300.0100.08320.76
5.5.290.0070.08020.64
5.5.280.0030.09320.92
5.5.270.0030.09020.88
5.5.260.0100.07320.89
5.5.250.0000.06720.69
5.5.240.0070.07320.28
5.5.230.0130.07320.16
5.5.220.0000.06320.29
5.5.210.0130.07320.18
5.5.200.0130.06720.18
5.5.190.0000.08020.23
5.5.180.0070.06720.18
5.5.160.0000.04320.23
5.5.150.0030.05020.27
5.5.140.0070.03720.22
5.5.130.0200.07320.25
5.5.120.0070.04320.16
5.5.110.0070.07320.25
5.5.100.0100.05319.91
5.5.90.0100.04020.07
5.5.80.0070.05320.06
5.5.70.0070.05020.06
5.5.60.0170.03320.05
5.5.50.0070.07720.06
5.5.40.0000.07020.09
5.5.30.0130.03320.02
5.5.20.0170.07319.99
5.5.10.0070.05320.07
5.5.00.0030.05720.07
5.4.450.0170.06319.51
5.4.440.0070.07719.45
5.4.430.0000.07019.35
5.4.420.0170.07319.16
5.4.410.0170.06319.07
5.4.400.0030.07019.21
5.4.390.0100.07319.21
5.4.380.0100.06719.04
5.4.370.0070.04719.23
5.4.360.0130.07719.21
5.4.350.0130.07019.00
5.4.340.0170.07319.00
5.4.320.0100.04318.85
5.4.310.0030.04018.89
5.4.300.0030.07719.23
5.4.290.0070.08019.20
5.4.280.0130.05019.17
5.4.270.0030.04319.12
5.4.260.0030.04319.12
5.4.250.0170.07019.08
5.4.240.0030.08018.84
5.4.230.0030.05719.03
5.4.220.0070.04319.20
5.4.210.0000.05019.14
5.4.200.0200.06018.94
5.4.190.0170.06018.89
5.4.180.0030.04719.04
5.4.170.0170.06719.15
5.4.160.0030.05019.10
5.4.150.0170.05318.88
5.4.140.0100.04016.43
5.4.130.0030.05016.14
5.4.120.0100.07016.38
5.4.110.0070.07316.34
5.4.100.0070.07016.36
5.4.90.0130.05016.43
5.4.80.0130.06716.25
5.4.70.0130.04316.46
5.4.60.0070.07016.32
5.4.50.0100.06716.48
5.4.40.0070.07316.45
5.4.30.0100.05316.43
5.4.20.0100.06716.46
5.4.10.0030.05016.33
5.4.00.0070.04715.80
5.3.290.0070.04014.66
5.3.280.0030.06014.56
5.3.270.0030.04714.66
5.3.260.0070.07714.65
5.3.250.0070.03714.68
5.3.240.0030.04314.54
5.3.230.0070.04014.55
5.3.220.0070.03714.66
5.3.210.0070.03314.51
5.3.200.0100.07014.50
5.3.190.0070.06714.58
5.3.180.0100.07314.52
5.3.170.0070.07314.51
5.3.160.0000.05014.57
5.3.150.0100.07014.62
5.3.140.0100.04314.69
5.3.130.0130.04014.66
5.3.120.0000.04314.48
5.3.110.0100.07314.61
5.3.100.0070.07314.12
5.3.90.0070.04314.04
5.3.80.0100.06314.09
5.3.70.0130.06713.95
5.3.60.0030.04713.99
5.3.50.0070.06013.86
5.3.40.0070.05713.86
5.3.30.0070.05313.79
5.3.20.0030.07713.59
5.3.10.0070.04013.57
5.3.00.0070.07313.77
5.2.170.0100.03011.00
5.2.160.0030.06311.07
5.2.150.0070.06311.05
5.2.140.0100.06311.25
5.2.130.0000.04011.18
5.2.120.0100.03311.15
5.2.110.0070.06011.08
5.2.100.0130.05011.18
5.2.90.0030.04710.98
5.2.80.0100.05711.00
5.2.70.0100.06011.12
5.2.60.0100.05711.15
5.2.50.0000.06311.06
5.2.40.0030.05710.89
5.2.30.0130.05311.07
5.2.20.0030.06010.89
5.2.10.0000.05310.71
5.2.00.0070.06010.77
5.1.60.0030.03010.09
5.1.50.0100.02710.09
5.1.40.0000.03010.04
5.1.30.0030.02710.42
5.1.20.0030.03010.25
5.1.10.0070.04310.11
5.1.00.0100.05010.16
5.0.50.0070.0438.59
5.0.40.0030.0408.50
5.0.30.0030.0638.30
5.0.20.0030.0308.26
5.0.10.0070.0138.00
5.0.00.0000.0338.22
4.4.90.0000.0277.81
4.4.80.0100.0137.81
4.4.70.0030.0337.81
4.4.60.0000.0377.81
4.4.50.0000.0377.81
4.4.40.0000.0377.81
4.4.30.0000.0237.81
4.4.20.0070.0337.81
4.4.10.0030.0277.81
4.4.00.0000.0337.81
4.3.110.0070.0307.81
4.3.100.0000.0307.81
4.3.90.0000.0277.81
4.3.80.0000.0337.81
4.3.70.0000.0137.81
4.3.60.0000.0137.81
4.3.50.0030.0137.81
4.3.40.0000.0277.81
4.3.30.0000.0337.81
4.3.20.0000.0177.81
4.3.10.0000.0177.81
4.3.00.0000.0177.81

preferences:
52.28 ms | 400 KiB | 5 Q