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run code in 300+ PHP versions simultaneously
<?php var_dump(json_decode('{"a": 1}')); var_dump(json_decode('{"1": 1}')); var_dump(json_decode('{a: 1, "a": 1}')); // invalid JSON

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)
8.3.60.0140.00016.63
8.3.50.0090.01022.86
8.3.40.0070.00718.71
8.3.30.0030.01018.96
8.3.20.0040.00420.10
8.3.10.0000.00820.27
8.3.00.0000.00819.02
8.2.180.0110.01118.09
8.2.170.0070.00722.96
8.2.160.0030.01020.52
8.2.150.0030.00524.18
8.2.140.0060.00324.66
8.2.130.0080.00026.16
8.2.120.0050.00319.23
8.2.110.0060.00320.45
8.2.100.0040.00817.59
8.2.90.0040.00419.15
8.2.80.0030.00617.97
8.2.70.0000.01117.46
8.2.60.0060.00317.80
8.2.50.0050.00318.07
8.2.40.0040.00418.03
8.2.30.0000.00821.28
8.2.20.0040.00417.51
8.2.10.0000.00717.84
8.2.00.0030.00517.53
8.1.280.0110.00725.92
8.1.270.0150.00422.19
8.1.260.0040.00426.35
8.1.250.0030.00628.09
8.1.240.0070.00323.88
8.1.230.0080.00420.94
8.1.220.0040.00418.77
8.1.210.0040.00418.77
8.1.200.0030.00617.13
8.1.190.0080.00017.38
8.1.180.0030.00918.10
8.1.170.0040.00418.54
8.1.160.0040.00418.75
8.1.150.0000.00818.63
8.1.140.0040.00417.28
8.1.130.0000.00717.63
8.1.120.0040.00417.32
8.1.110.0000.00717.25
8.1.100.0000.00717.28
8.1.90.0000.00717.22
8.1.80.0000.00717.22
8.1.70.0000.00817.30
8.1.60.0040.00417.34
8.1.50.0060.00317.35
8.1.40.0030.00617.34
8.1.30.0050.00317.50
8.1.20.0000.00717.49
8.1.10.0050.00217.27
8.1.00.0050.00217.30
8.0.300.0000.00719.75
8.0.290.0000.00717.05
8.0.280.0050.00318.29
8.0.270.0030.00317.18
8.0.260.0080.00017.11
8.0.250.0070.00016.79
8.0.240.0060.00016.86
8.0.230.0030.00316.83
8.0.220.0000.00716.72
8.0.210.0070.00016.80
8.0.200.0030.00316.86
8.0.190.0040.00416.86
8.0.180.0000.00816.81
8.0.170.0040.00416.68
8.0.160.0030.00316.86
8.0.150.0060.00316.69
8.0.140.0040.00416.61
8.0.130.0000.00813.23
8.0.120.0030.00616.60
8.0.110.0000.00716.70
8.0.100.0040.00416.79
8.0.90.0030.00616.62
8.0.80.0120.00316.71
8.0.70.0000.00816.75
8.0.60.0030.00516.60
8.0.50.0000.00716.75
8.0.30.0080.01216.93
8.0.20.0050.01317.40
8.0.10.0050.00216.74
8.0.00.0120.00616.64
7.4.330.0000.00515.02
7.4.320.0000.00716.42
7.4.300.0030.00316.36
7.4.290.0000.00716.38
7.4.280.0030.00616.48
7.4.270.0030.00316.48
7.4.260.0040.00416.34
7.4.250.0070.00016.43
7.4.240.0040.00416.29
7.4.230.0070.00016.27
7.4.220.0170.00716.45
7.4.210.0070.00716.31
7.4.200.0040.00316.55
7.4.160.0060.01016.31
7.4.150.0090.00917.40
7.4.140.0100.01417.86
7.4.130.0100.00616.34
7.4.120.0100.00916.32
7.4.110.0090.01516.34
7.4.100.0070.01016.41
7.4.90.0170.00016.28
7.4.80.0150.00616.43
7.4.70.0120.00316.37
7.4.60.0110.01116.35
7.4.50.0000.00816.15
7.4.40.0090.01316.44
7.4.30.0030.01316.44
7.4.00.0090.00614.52
7.3.330.0060.00013.03
7.3.320.0070.00012.79
7.3.310.0050.00216.09
7.3.300.0030.00316.13
7.3.290.0050.01116.12
7.3.280.0050.01116.08
7.3.270.0060.01217.40
7.3.260.0090.00916.14
7.3.250.0120.00916.28
7.3.240.0070.01716.14
7.3.230.0060.01216.39
7.3.210.0030.01316.09
7.3.200.0170.00019.39
7.3.190.0140.00716.26
7.3.180.0160.00316.29
7.3.170.0060.01216.27
7.3.160.0120.00316.32
7.2.330.0130.00316.46
7.2.320.0100.00716.45
7.2.310.0130.01316.18
7.2.300.0100.00716.54
7.2.290.0110.01316.36
7.2.60.0110.00416.70
7.2.00.0030.01218.66
7.1.200.0070.00415.74
7.1.100.0060.00617.70
7.1.70.0030.00317.00
7.1.60.0060.01919.34
7.1.50.0100.01316.61
7.1.00.0030.07722.36
7.0.200.0040.00416.65
7.0.140.0030.06321.95
7.0.60.0200.03019.96
7.0.50.0030.04017.79
7.0.40.0000.04719.98
7.0.30.0100.05020.34
7.0.20.0300.04320.09
7.0.10.0000.04720.33
7.0.00.0030.07720.02
5.6.280.0000.07720.98
5.6.210.0100.08020.46
5.6.200.0100.08018.19
5.6.190.0100.08720.64
5.6.180.0430.05020.61
5.6.170.0400.07720.52
5.6.160.0000.04320.41
5.6.150.0100.07318.15
5.6.140.0070.07718.18
5.6.130.0130.07718.17
5.6.120.0130.07720.82
5.6.110.0070.08721.06
5.6.100.0070.05721.11
5.6.90.0030.06721.05
5.6.80.0070.07020.43
5.5.350.0200.09020.46
5.5.340.0070.03718.01
5.5.330.0070.08720.43
5.5.320.0300.04020.31
5.5.310.0370.05320.21
5.5.300.0130.07018.02
5.5.290.0100.03317.92
5.5.280.0030.05720.76
5.5.270.0070.08320.66
5.5.260.0000.06020.74
5.5.250.0030.06320.63
5.5.240.0100.08020.18
5.4.450.0670.04019.04
5.4.440.1630.04019.44
5.4.430.1870.05019.16
5.4.420.1630.04319.12
5.4.410.1800.03719.31
5.4.400.1630.04018.72
5.4.390.1800.04719.23
5.4.380.1500.04019.12
5.4.370.1600.04319.21
5.4.360.1670.03719.14
5.4.350.1700.04018.82
5.4.340.1530.04018.71
5.4.320.0000.05018.82
5.4.310.0070.04019.25
5.4.300.0800.06019.14
5.4.290.1600.03319.13
5.4.280.1470.05019.01
5.4.270.1470.04318.71
5.4.260.1530.03718.71
5.4.250.1530.03718.84
5.4.240.1530.04018.83
5.4.230.1600.03318.84
5.4.220.1830.04318.96
5.4.210.1730.03719.00
5.4.200.1530.03719.13
5.4.190.1730.04318.68
5.4.180.0670.05018.78
5.4.170.0070.03719.11
5.4.160.0170.04018.97
5.4.150.1530.03719.22
5.4.140.1530.03316.23
5.4.130.1630.04016.15
5.4.120.1670.04016.29
5.4.110.1770.04316.42
5.4.100.1870.03716.30
5.4.90.1700.04016.30
5.4.80.1500.02316.05
5.4.70.1800.03316.42
5.4.60.1770.04716.43
5.4.50.1600.04716.36
5.4.40.0970.03716.36
5.4.30.0100.03316.28
5.4.20.0070.04016.45
5.4.10.1170.03316.41
5.4.00.1500.03316.05
5.3.290.1500.03314.57
5.3.280.1530.03714.43
5.3.270.1470.03714.51
5.3.260.1800.04014.46
5.3.250.1530.05014.45
5.3.240.1770.03714.45
5.3.230.1570.04314.46
5.3.220.1630.03014.40
5.3.210.1570.03314.41
5.3.200.1670.03314.55
5.3.190.0800.04714.42
5.3.180.0030.06714.51
5.3.170.0100.07314.66
5.3.160.1430.04014.51
5.3.150.1600.03714.45
5.3.140.1530.04314.41
5.3.130.1770.03714.48
5.3.120.1700.04314.48
5.3.110.1830.04014.50
5.3.100.1400.05013.92
5.3.90.0000.04313.87
5.3.80.0030.07713.94
5.3.70.0670.04314.11
5.3.60.1770.04713.84
5.3.50.1730.05013.80
5.3.40.1400.03713.80
5.3.30.0730.02013.85
5.3.20.0030.04313.57
5.3.10.0030.03313.50
5.3.00.1430.05313.50
5.2.170.1230.03311.08
5.2.160.1300.03010.98
5.2.150.0730.03011.05
5.2.140.1270.03311.30
5.2.130.1300.02711.01
5.2.120.1430.02710.95
5.2.110.1230.03010.95
5.2.100.1300.02711.15
5.2.90.1130.03011.16
5.2.80.1230.03011.03
5.2.70.1100.03011.19
5.2.60.1270.02710.89
5.2.50.1200.03310.85
5.2.40.1100.03010.93
5.2.30.0430.02711.01
5.2.20.0070.05311.03
5.2.10.0030.03010.80
5.2.00.0030.04710.76
5.1.60.0700.02310.12
5.1.50.1030.0239.97
5.1.40.1030.02710.06
5.1.30.1030.02710.45
5.1.20.0770.02710.34
5.1.10.1170.02310.04
5.1.00.0830.02310.23
5.0.50.0630.0308.41
5.0.40.0530.0178.38
5.0.30.0700.0408.19
5.0.20.0530.0208.08
5.0.10.0570.0178.17
5.0.00.0630.0408.05
4.4.90.0500.0177.63
4.4.80.0630.0207.63
4.4.70.0770.0277.63
4.4.60.0630.0237.63
4.4.50.0470.0207.63
4.4.40.0570.0277.63
4.4.30.0630.0177.63
4.4.20.0530.0177.63
4.4.10.0030.0177.63
4.4.00.0000.0237.63
4.3.110.0030.0177.63
4.3.100.0030.0137.63
4.3.90.0030.0237.63
4.3.80.0030.0507.63
4.3.70.0000.0177.63
4.3.60.0200.0177.63
4.3.50.0330.0177.63
4.3.40.0530.0277.63
4.3.30.0230.0177.63
4.3.20.0270.0207.63
4.3.10.0370.0177.63
4.3.00.0270.0207.63

preferences:
48.38 ms | 401 KiB | 5 Q