3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array=["a"=>b,"c"=>"d"]; echo json_encode($array);

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)
8.3.60.0070.01416.88
8.3.50.0090.01121.93
8.3.40.0090.00618.72
8.3.30.0060.00918.62
8.3.20.0040.00420.39
8.3.10.0040.00423.66
8.3.00.0050.00317.59
8.2.180.0160.00316.50
8.2.170.0200.00022.96
8.2.160.0070.00719.29
8.2.150.0090.00024.18
8.2.140.0080.00024.66
8.2.130.0050.00326.16
8.2.120.0090.00617.38
8.2.110.0040.00822.20
8.2.100.0100.00318.04
8.2.90.0070.00019.05
8.2.80.0040.00417.97
8.2.70.0030.00717.75
8.2.60.0030.00618.04
8.2.50.0000.00818.07
8.2.40.0000.00719.41
8.2.30.0040.00420.62
8.2.20.0040.00417.79
8.2.10.0040.00418.04
8.2.00.0000.00818.07
8.1.280.0110.01125.92
8.1.270.0040.00423.83
8.1.260.0000.00826.35
8.1.250.0000.00828.09
8.1.240.0090.00022.52
8.1.230.0000.01117.64
8.1.220.0060.00317.74
8.1.210.0080.00018.77
8.1.200.0050.00517.23
8.1.190.0040.00417.22
8.1.180.0030.00618.10
8.1.170.0040.00418.66
8.1.160.0000.00721.91
8.1.150.0040.00418.86
8.1.140.0050.00319.50
8.1.130.0080.00017.63
8.1.120.0080.00017.38
8.1.110.0040.00417.38
8.1.100.0040.00417.28
8.1.90.0000.00717.40
8.1.80.0080.00017.39
8.1.70.0030.00317.27
8.1.60.0030.00617.43
8.1.50.0060.00617.26
8.1.40.0030.00617.32
8.1.30.0040.00417.51
8.1.20.0040.00417.56
8.1.10.0040.00417.40
8.1.00.0080.00017.50
8.0.300.0040.00418.77
8.0.290.0000.00716.88
8.0.280.0030.00318.43
8.0.270.0030.00317.24
8.0.260.0000.00617.30
8.0.250.0040.00416.99
8.0.240.0060.00316.94
8.0.230.0030.00616.91
8.0.220.0030.00316.94
8.0.210.0000.00716.85
8.0.200.0000.00717.07
8.0.190.0040.00416.91
8.0.180.0030.00617.01
8.0.170.0040.00416.86
8.0.160.0030.00316.84
8.0.150.0030.00316.86
8.0.140.0000.00816.86
8.0.130.0000.00613.35
8.0.120.0080.00016.92
8.0.110.0050.00316.85
8.0.100.0040.00316.82
8.0.90.0040.00417.00
8.0.80.0100.00716.88
8.0.70.0000.00716.83
8.0.60.0000.00716.81
8.0.50.0040.00416.89
8.0.30.0080.01016.99
8.0.20.0120.00617.40
8.0.10.0040.00417.05
8.0.00.0080.01116.78
7.4.330.0050.00015.08
7.4.320.0040.00416.61
7.4.300.0030.00316.51
7.4.290.0000.00816.38
7.4.280.0000.00716.48
7.4.270.0080.00016.64
7.4.260.0000.00816.57
7.4.250.0070.00016.38
7.4.240.0020.00616.48
7.4.230.0000.00716.66
7.4.220.0150.00516.57
7.4.210.0120.00316.70
7.4.200.0030.00316.50
7.4.160.0110.00316.31
7.4.150.0140.00517.40
7.4.140.0120.01217.86
7.4.130.0130.00816.40
7.4.120.0080.00916.42
7.4.110.0030.01516.45
7.4.100.0040.01516.59
7.4.90.0060.01016.43
7.4.80.0090.00919.39
7.4.70.0100.00916.77
7.4.60.0100.00716.44
7.4.50.0000.00416.29
7.4.40.0030.01316.69
7.4.30.0110.00716.50
7.4.00.0060.00915.02
7.3.330.0030.00313.09
7.3.320.0000.00513.01
7.3.310.0000.00716.18
7.3.300.0040.00416.31
7.3.290.0060.00916.25
7.3.280.0080.01016.25
7.3.270.0090.00917.40
7.3.260.0080.00816.18
7.3.250.0090.00716.33
7.3.240.0090.00816.21
7.3.230.0130.00316.59
7.3.210.0150.00616.27
7.3.200.0100.01016.32
7.3.190.0050.01316.30
7.3.180.0100.00716.37
7.3.170.0120.00316.41
7.3.160.0100.00816.24
7.3.120.0090.00914.55
7.3.110.0060.01014.49
7.3.100.0100.00314.80
7.3.90.0050.00514.77
7.3.80.0030.01014.79
7.3.70.0080.00014.59
7.3.60.0000.01614.81
7.3.50.0070.00714.82
7.3.40.0040.01214.82
7.3.30.0090.00614.82
7.3.20.0030.01216.75
7.3.10.0070.00716.80
7.3.00.0070.00716.52
7.2.330.0130.00716.55
7.2.320.0090.01416.39
7.2.310.0100.01016.54
7.2.300.0060.01216.36
7.2.290.0110.00316.56
7.2.250.0000.01814.96
7.2.240.0100.01014.87
7.2.230.0130.00314.81
7.2.220.0000.01114.99
7.2.210.0030.01314.94
7.2.200.0030.01214.93
7.2.190.0060.01015.02
7.2.180.0030.00715.09
7.2.170.0060.01014.79
7.2.60.0000.01216.84
7.2.00.0040.00819.15
7.1.330.0130.00015.54
7.1.320.0030.01015.75
7.1.310.0060.00315.73
7.1.300.0030.01015.54
7.1.290.0000.00815.93
7.1.280.0040.00815.61
7.1.270.0120.00615.49
7.1.260.0040.01215.33
7.1.200.0120.00315.79
7.1.100.0060.00618.27
7.1.70.0000.00817.06
7.1.60.0130.01019.43
7.1.50.0040.01816.95
7.1.00.0000.08022.41
7.0.200.0190.00014.67
7.0.90.0530.05319.99
7.0.80.0470.04019.90
7.0.70.0630.06719.90
7.0.60.0470.08019.84
7.0.50.0470.03720.38
7.0.40.0000.04320.11
7.0.30.0000.06720.05
7.0.20.0100.03019.95
7.0.10.0000.04320.07
7.0.00.0100.03720.16
5.6.280.0030.07321.02
5.6.240.0070.07720.63
5.6.230.0100.04720.58
5.6.220.0130.07320.73
5.6.210.0100.06720.58
5.6.200.0030.04321.03
5.6.190.0070.04321.16
5.6.180.0070.03321.11
5.6.170.0000.04721.05
5.6.160.0000.04320.95
5.6.150.0000.04321.05
5.6.140.0070.03721.04
5.6.130.0030.04321.04
5.6.120.0030.04720.94
5.6.110.0030.04320.95
5.6.100.0030.06320.91
5.6.90.0100.03320.90
5.6.80.0030.03320.51
5.6.70.0030.05320.42
5.6.60.0100.03320.36
5.6.50.0030.03320.48
5.6.40.0000.04720.46
5.6.30.0030.04020.30
5.6.20.0030.04020.28
5.6.10.0030.04020.35
5.6.00.0000.04320.35
5.5.380.0100.05720.39
5.5.370.0070.08020.42
5.5.360.0100.08020.40
5.5.350.0070.05320.41
5.5.340.0100.03320.87
5.5.330.0070.03720.73
5.5.320.0000.04720.83
5.5.310.0000.04320.79
5.5.300.0070.03720.88
5.5.290.0000.04720.82
5.5.280.0070.04320.79
5.5.270.0070.04020.90
5.5.260.0030.04720.88
5.5.250.0170.02720.72
5.5.240.0000.04320.26
5.5.230.0100.03320.20
5.5.220.0070.03720.21
5.5.210.0070.03720.24
5.5.200.0030.03720.10
5.5.190.0100.03320.20
5.5.180.0030.04320.25
5.5.160.0070.03720.11
5.5.150.0030.03720.07
5.5.140.0070.03720.27
5.5.130.0000.05320.11
5.5.120.0030.03320.16
5.5.110.0000.05320.11
5.5.100.0130.03720.07
5.5.90.0070.07720.04
5.5.80.0130.04720.03
5.5.70.0130.08720.02
5.5.60.0030.05320.05
5.5.50.0130.07319.96
5.5.40.0170.06720.02
5.5.30.0030.04319.98
5.5.20.0070.07720.07
5.5.10.0100.07320.03
5.5.00.0070.07319.95
5.4.450.0030.04019.30
5.4.440.0000.04319.44
5.4.430.0100.03319.36
5.4.420.0070.03719.35
5.4.410.0070.03319.32
5.4.400.0100.03019.07
5.4.390.0030.03719.13
5.4.380.0000.04319.23
5.4.370.0030.03719.12
5.4.360.0070.03019.23
5.4.350.0030.03719.07
5.4.340.0100.03019.07
5.4.320.0070.03018.94
5.4.310.0100.02719.10
5.4.300.0030.03719.23
5.4.290.0070.06019.07
5.4.280.0070.05019.11
5.4.270.0030.03719.05
5.4.260.0030.04318.80
5.4.250.0030.08319.03
5.4.240.0070.07719.09
5.4.230.0130.07018.95
5.4.220.0000.08019.09
5.4.210.0130.07319.09
5.4.200.0130.06719.19
5.4.190.0070.08318.89
5.4.180.0130.06018.96
5.4.170.0070.07718.79
5.4.160.0070.07019.09
5.4.150.0170.07018.76
5.4.140.0200.05716.32
5.4.130.0000.04016.32
5.4.120.0030.04016.23
5.4.110.0070.07016.33
5.4.100.0130.06716.40
5.4.90.0100.05716.45
5.4.80.0070.06716.36
5.4.70.0030.07316.34
5.4.60.0170.06016.23
5.4.50.0100.06716.43
5.4.40.0070.05316.36
5.4.30.0100.05016.38
5.4.20.0170.05716.18
5.4.10.0100.06716.18
5.4.00.0100.07015.69

preferences:
59.59 ms | 401 KiB | 5 Q