3v4l.org

run code in 300+ PHP versions simultaneously
<?php $obj = (object)[''=>null]; var_dump(json_encode($obj));//array(0) {}

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)
8.3.40.0100.01018.71
8.3.30.0120.00318.88
8.3.20.0110.00320.16
8.3.10.0020.00522.13
8.3.00.0060.00322.34
8.2.170.0120.00622.96
8.2.160.0070.00722.27
8.2.150.0120.00624.18
8.2.140.0050.00324.66
8.2.130.0040.00426.16
8.2.120.0040.00419.48
8.2.110.0040.00420.58
8.2.100.0140.00017.60
8.2.90.0080.00019.11
8.2.80.0000.00917.97
8.2.70.0080.00017.63
8.2.60.0000.01117.68
8.2.50.0060.00318.07
8.2.40.0040.00418.03
8.2.30.0000.00717.87
8.2.20.0000.00817.53
8.2.10.0050.00317.68
8.2.00.0040.00417.63
8.1.270.0000.00822.14
8.1.260.0040.00426.35
8.1.250.0050.00328.09
8.1.240.0060.00621.98
8.1.230.0070.00421.04
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0000.00917.13
8.1.190.0070.00017.30
8.1.180.0040.00418.10
8.1.170.0050.00318.52
8.1.160.0050.00321.94
8.1.150.0060.00618.58
8.1.140.0040.00417.38
8.1.130.0040.00417.76
8.1.120.0070.00017.38
8.1.110.0000.00717.29
8.1.100.0000.00717.35
8.1.90.0020.00517.38
8.1.80.0040.00417.41
8.1.70.0030.00317.31
8.1.60.0040.00417.54
8.1.50.0050.00217.35
8.1.40.0070.00017.39
8.1.30.0060.00317.53
8.1.20.0030.00617.54
8.1.10.0030.00617.35
8.1.00.0090.00017.34
8.0.300.0030.00618.77
8.0.290.0040.00417.05
8.0.280.0030.00318.43
8.0.270.0000.00717.06
8.0.260.0030.00316.82
8.0.250.0030.00317.02
8.0.240.0080.00016.99
8.0.230.0040.00416.92
8.0.220.0000.00716.86
8.0.210.0030.00316.91
8.0.200.0000.00616.84
8.0.190.0050.00216.85
8.0.180.0070.00016.93
8.0.170.0050.00316.93
8.0.160.0070.00016.95
8.0.150.0000.00716.84
8.0.140.0050.00216.76
8.0.130.0000.00713.30
8.0.120.0050.00216.89
8.0.110.0000.00716.84
8.0.100.0040.00416.82
8.0.90.0030.00316.88
8.0.80.0150.00616.84
8.0.70.0050.00316.89
8.0.60.0000.00716.77
8.0.50.0030.00416.78
8.0.30.0060.01216.91
8.0.20.0120.00817.40
8.0.10.0060.00316.82
8.0.00.0090.01216.62
7.4.330.0000.00615.00
7.4.320.0030.00316.37
7.4.300.0070.00016.57
7.4.290.0050.00216.33
7.4.280.0030.00316.52
7.4.270.0000.00716.49
7.4.260.0000.00716.41
7.4.250.0030.00516.50
7.4.240.0050.00316.44
7.4.230.0030.00316.35
7.4.220.0000.01716.43
7.4.210.0100.00716.45
7.4.200.0000.00716.38
7.4.190.0000.00716.62
7.4.160.0060.00916.54
7.4.150.0070.01117.40
7.4.140.0100.01217.86
7.4.130.0040.01316.39
7.4.120.0110.00616.45
7.4.110.0060.01016.46
7.4.100.0030.01416.61
7.4.90.0180.00616.42
7.4.80.0030.01319.39
7.4.70.0030.01316.48
7.4.60.0060.01016.33
7.4.50.0030.00616.54
7.4.40.0040.01522.77
7.4.30.0080.00816.30
7.4.10.0090.00914.98
7.4.00.0060.00814.77
7.3.330.0030.00313.14
7.3.320.0000.00513.09
7.3.310.0000.00616.20
7.3.300.0030.00316.23
7.3.290.0080.01216.29
7.3.280.0070.00916.18
7.3.270.0100.00717.40
7.3.260.0100.00716.36
7.3.250.0090.01016.28
7.3.240.0060.01016.37
7.3.230.0060.01016.42
7.3.210.0060.01216.14
7.3.200.0030.01319.39
7.3.190.0030.01716.52
7.3.180.0060.00916.36
7.3.170.0090.00616.27
7.3.160.0160.00816.29
7.3.130.0070.01114.83
7.3.120.0050.01214.65
7.3.110.0050.01014.78
7.3.100.0060.01014.73
7.3.90.0020.01214.55
7.3.80.0040.00814.76
7.3.70.0050.00514.64
7.3.60.0040.00714.58
7.3.50.0090.00414.60
7.3.40.0110.00314.61
7.3.30.0100.00514.64
7.3.20.0040.01016.35
7.3.10.0060.00716.59
7.3.00.0050.00616.45
7.2.330.0060.01016.49
7.2.320.0090.00916.54
7.2.310.0060.01216.36
7.2.300.0140.01016.32
7.2.290.0090.00916.18
7.2.260.0090.00915.07
7.2.250.0060.01015.04
7.2.240.0050.01014.87
7.2.230.0080.01014.91
7.2.220.0070.00914.85
7.2.210.0050.01114.78
7.2.200.0020.01214.90
7.2.190.0090.00714.94
7.2.180.0090.00814.90
7.2.170.0050.00614.82
7.2.160.0080.00814.79
7.2.150.0070.00516.72
7.2.140.0080.00616.84
7.2.130.0080.00616.75
7.2.120.0070.00716.85
7.2.110.0080.00616.62
7.2.100.0070.00616.62
7.2.90.0060.00716.68
7.2.80.0050.00916.80
7.2.70.0070.00716.76
7.2.60.0060.00716.86
7.2.50.0090.00616.76
7.2.40.0030.01016.85
7.2.30.0060.00616.82
7.2.20.0050.00816.78
7.2.10.0030.01116.78
7.2.00.0080.00416.75
7.1.330.0070.00815.70
7.1.320.0100.00715.73
7.1.310.0050.00815.57
7.1.300.0030.01015.91
7.1.290.0060.01015.79
7.1.280.0030.00915.69
7.1.270.0020.01315.41
7.1.260.0060.00715.64
7.1.250.0060.00715.67
7.1.240.0040.00615.72
7.1.230.0030.00715.68
7.1.220.0020.01215.48
7.1.210.0090.00515.76
7.1.200.0040.00715.71
7.1.190.0070.00715.49
7.1.180.0050.01015.80
7.1.170.0040.00715.65
7.1.160.0090.00515.89
7.1.150.0080.00415.65
7.1.140.0030.01015.82
7.1.130.0040.01015.63
7.1.120.0050.00715.88
7.1.110.0020.01215.77
7.1.100.0040.00816.55
7.1.90.0030.01215.52
7.1.80.0060.00315.91
7.1.70.0070.00816.21
7.1.60.0080.01017.08
7.1.50.0080.00815.95
7.1.40.0020.01415.81
7.1.30.0070.00715.59
7.1.20.0060.00715.75
7.1.10.0000.01415.80
7.1.00.0050.03417.99
7.0.330.0110.00315.31
7.0.320.0020.00915.31
7.0.310.0050.00615.30
7.0.300.0030.01015.22
7.0.290.0040.00915.24
7.0.280.0080.00415.21
7.0.270.0040.01015.31
7.0.260.0030.01015.35
7.0.250.0040.01015.33
7.0.240.0050.00715.23
7.0.230.0080.00515.34
7.0.220.0050.00815.40
7.0.210.0050.00815.23
7.0.200.0050.00615.55
7.0.190.0070.00715.44
7.0.180.0050.01015.27
7.0.170.0070.00815.17
7.0.160.0070.00515.09
7.0.150.0080.00715.39
7.0.140.0060.02817.47
7.0.130.0010.01015.41
7.0.120.0020.01015.41
7.0.110.0030.00915.23
7.0.100.0050.00915.52
7.0.90.0210.01316.82
7.0.80.0200.02316.84
7.0.70.0090.01716.83
7.0.60.0160.02116.96
7.0.50.0090.01717.09
7.0.40.0050.01515.60
7.0.30.0060.01415.71
7.0.20.0060.01515.68
7.0.10.0040.01815.65
7.0.00.0050.01915.71
5.6.400.0060.00813.96
5.6.390.0070.00814.05
5.6.380.0060.00914.25
5.6.370.0060.00514.40
5.6.360.0110.00514.26
5.6.350.0040.00614.36
5.6.340.0090.00714.13
5.6.330.0050.00514.16
5.6.320.0080.00614.29
5.6.310.0070.00714.07
5.6.300.0070.00214.29
5.6.290.0060.00814.31
5.6.280.0050.02816.69
5.6.270.0000.01114.49
5.6.260.0050.00514.10
5.6.250.0070.00714.32
5.6.240.0040.02216.36
5.6.230.0080.01716.31
5.6.220.0000.02316.41
5.6.210.0030.02016.28
5.6.200.0060.01716.52
5.6.190.0040.02416.61
5.6.180.0070.01416.48
5.6.170.0070.03116.54
5.6.160.0010.02516.42
5.6.150.0010.02216.39
5.6.140.0080.01716.50
5.6.130.0050.02316.39
5.6.120.0060.01916.43
5.6.110.0060.02016.36
5.6.100.0040.01716.43
5.6.90.0040.03516.47
5.6.80.0100.03216.29
5.6.70.0100.02116.16
5.6.60.0080.03216.21
5.6.50.0070.02116.21
5.6.40.0040.03416.15
5.6.30.0090.02716.32
5.6.20.0050.02916.42
5.6.10.0070.03016.17
5.6.00.0070.03316.24
5.5.380.0030.01916.16
5.5.370.0030.02916.16
5.5.360.0080.01516.27
5.5.350.0070.02616.19
5.5.340.0070.01816.42
5.5.330.0040.01716.15
5.5.320.0080.01316.29
5.5.310.0070.01516.36
5.5.300.0050.01516.49
5.5.290.0020.01916.37
5.5.280.0050.02116.44
5.5.270.0030.02116.36
5.5.260.0040.03616.30
5.5.250.0020.02816.26
5.5.240.0050.03516.13
5.5.230.0090.02616.21
5.5.220.0070.03216.24
5.5.210.0050.02016.20
5.5.200.0080.03116.19
5.5.190.0080.03116.08
5.5.180.0060.03216.19
5.5.170.0060.00814.18
5.5.160.0020.03616.17
5.5.150.0040.03015.94
5.5.140.0080.02416.11
5.5.130.0050.02516.06
5.5.120.0050.01816.19
5.5.110.0050.03216.20
5.5.100.0070.03016.07
5.5.90.0070.01616.21
5.5.80.0060.02716.07
5.5.70.0110.02016.03
5.5.60.0070.03016.08
5.5.50.0090.02416.01
5.5.40.0070.03116.13
5.5.30.0030.02216.04
5.5.20.0080.02316.14
5.5.10.0050.02116.11
5.5.00.0080.03215.99
5.4.450.0040.01713.71
5.4.440.0060.01813.79
5.4.430.0040.01513.78
5.4.420.0060.01713.87
5.4.410.0040.02613.66
5.4.400.0070.03013.56
5.4.390.0050.01813.63
5.4.380.0030.03013.67
5.4.370.0090.01713.74
5.4.360.0030.01813.61
5.4.350.0110.02413.67
5.4.340.0060.02213.73
5.4.330.0050.00511.05
5.4.320.0110.02513.64
5.4.310.0020.02013.70
5.4.300.0080.02713.60
5.4.290.0030.02313.62
5.4.280.0030.01813.53
5.4.270.0100.02413.58
5.4.260.0030.01713.69
5.4.250.0010.02113.57
5.4.240.0060.02513.60
5.4.230.0040.03013.64
5.4.220.0070.02713.64
5.4.210.0030.02913.69
5.4.200.0090.02513.60
5.4.190.0060.02313.59
5.4.180.0090.02613.59
5.4.170.0050.03013.72
5.4.160.0060.02713.67
5.4.150.0030.02113.63
5.4.140.0060.03112.67
5.4.130.0020.02012.72
5.4.120.0070.02512.72
5.4.110.0080.01612.88
5.4.100.0100.01412.72
5.4.90.0050.01612.84
5.4.80.0050.01912.72
5.4.70.0060.01212.77
5.4.60.0020.01712.71
5.4.50.0030.01612.78
5.4.40.0040.01812.77
5.4.30.0040.01612.70
5.4.20.0080.01412.73
5.4.10.0090.02512.70
5.4.00.0080.02512.56
5.3.290.0090.02711.88
5.3.280.0100.02411.86
5.3.270.0090.02911.89
5.3.260.0080.02311.91
5.3.250.0050.02211.91
5.3.240.0030.02811.79
5.3.230.0050.03711.82
5.3.220.0060.03111.83
5.3.210.0060.03011.91
5.3.200.0100.01811.90
5.3.190.0080.03111.91
5.3.180.0040.01711.98
5.3.170.0110.02311.98
5.3.160.0060.02511.93
5.3.150.0060.01811.93
5.3.140.0050.01911.94
5.3.130.0070.01711.88
5.3.120.0060.03111.88
5.3.110.0060.02311.88
5.3.100.0070.03011.78
5.3.90.0070.02711.76
5.3.80.0040.02411.75
5.3.70.0050.02511.65
5.3.60.0060.02111.71
5.3.50.0100.02311.67
5.3.40.0050.01911.71
5.3.30.0060.01811.65
5.3.20.0060.02611.51
5.3.10.0040.03011.52
5.3.00.0080.02311.48
5.2.170.0070.06011.21
5.2.160.0030.04310.98
5.2.150.0030.05011.05
5.2.140.0030.07010.96
5.2.130.0100.06011.09
5.2.120.0000.05710.91
5.2.110.0070.06011.12
5.2.100.0030.05011.09
5.2.90.0000.06311.02
5.2.80.0030.06711.09
5.2.70.0100.04711.09
5.2.60.0070.06310.89
5.2.50.0000.03310.96
5.2.40.0030.05710.87
5.2.30.0000.06711.02
5.2.20.0000.05310.76
5.2.10.0070.05310.93
5.2.00.0070.03010.77
5.1.60.0070.04710.55
5.1.50.0030.05710.55
5.1.40.0070.04710.55
5.1.30.0030.04310.55
5.1.20.0030.05710.55
5.1.10.0030.05710.55
5.1.00.0070.04310.55
5.0.50.0000.03310.55
5.0.40.0030.03010.55
5.0.30.0070.04010.55
5.0.20.0000.04010.55
5.0.10.0000.04310.55
5.0.00.0070.05710.55
4.4.90.0000.02310.55
4.4.80.0000.03010.55
4.4.70.0070.03010.55
4.4.60.0100.02310.55
4.4.50.0000.02310.55
4.4.40.0000.05310.55
4.4.30.0000.04010.55
4.4.20.0030.03710.55
4.4.10.0030.02310.55
4.4.00.0030.05310.55
4.3.110.0200.01310.55
4.3.100.0030.02310.55
4.3.90.0000.03310.55
4.3.80.0000.05310.55
4.3.70.0000.03710.55
4.3.60.0000.03710.55
4.3.50.0030.02710.55
4.3.40.0030.04010.55
4.3.30.0030.03310.55
4.3.20.0000.02710.55
4.3.10.0070.03010.55
4.3.00.0000.02010.55

preferences:
43.2 ms | 400 KiB | 5 Q