3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(array("xsd"=>"wer"),array("123"=>"456")); echo json_encode($a);

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)
8.3.40.0100.00718.71
8.3.30.0140.00719.15
8.3.20.0000.00820.16
8.3.10.0070.00021.60
8.3.00.0040.00417.50
8.2.170.0150.00022.96
8.2.160.0150.00620.29
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0080.00021.09
8.2.110.0030.00622.09
8.2.100.0040.00817.84
8.2.90.0000.00817.75
8.2.80.0030.00617.97
8.2.70.0050.00317.80
8.2.60.0000.00817.80
8.2.50.0040.00418.10
8.2.40.0000.00822.33
8.2.30.0050.00218.06
8.2.20.0070.00017.67
8.2.10.0000.00717.98
8.2.00.0000.00817.72
8.1.270.0030.00523.97
8.1.260.0070.00026.35
8.1.250.0070.00028.09
8.1.240.0040.00424.02
8.1.230.0070.00419.21
8.1.220.0000.00817.74
8.1.210.0000.00818.77
8.1.200.0070.00317.23
8.1.190.0030.00617.23
8.1.180.0000.00818.10
8.1.170.0040.00418.56
8.1.160.0000.00821.94
8.1.150.0050.00318.74
8.1.140.0000.00717.32
8.1.130.0050.00317.79
8.1.120.0050.00217.33
8.1.110.0000.00717.20
8.1.100.0000.00717.34
8.1.90.0040.00417.32
8.1.80.0040.00417.33
8.1.70.0070.00017.20
8.1.60.0050.00317.48
8.1.50.0020.00517.46
8.1.40.0030.00517.43
8.1.30.0030.00517.50
8.1.20.0070.00017.47
8.1.10.0000.00717.40
8.1.00.0000.00717.39
8.0.300.0060.00319.75
8.0.290.0020.00616.75
8.0.280.0070.00018.38
8.0.270.0090.00017.06
8.0.260.0030.00317.23
8.0.250.0000.00716.92
8.0.240.0000.00716.86
8.0.230.0040.00416.88
8.0.220.0000.00816.84
8.0.210.0040.00416.88
8.0.200.0000.00616.88
8.0.190.0050.00317.00
8.0.180.0040.00416.94
8.0.170.0000.00816.79
8.0.160.0000.00716.76
8.0.150.0000.00816.89
8.0.140.0030.00616.78
8.0.130.0060.00013.25
8.0.120.0050.00316.86
8.0.110.0000.00716.91
8.0.100.0070.00016.87
8.0.90.0000.00716.75
8.0.80.0090.01616.88
8.0.70.0070.00016.77
8.0.60.0000.00716.71
8.0.50.0050.00216.78
8.0.30.0110.01116.96
8.0.20.0110.00817.40
8.0.10.0040.00417.01
8.0.00.0120.01216.75
7.4.330.0000.00515.02
7.4.320.0060.00016.39
7.4.300.0030.00316.51
7.4.290.0070.00016.45
7.4.280.0070.00016.57
7.4.270.0040.00216.46
7.4.260.0040.00416.42
7.4.250.0030.00516.38
7.4.240.0040.00316.40
7.4.230.0000.00716.41
7.4.220.0070.01116.61
7.4.210.0100.00316.39
7.4.200.0000.00716.52
7.4.160.0090.00616.41
7.4.150.0090.00917.40
7.4.140.0040.01217.86
7.4.130.0100.00616.49
7.4.120.0080.00816.45
7.4.110.0100.00716.61
7.4.100.0090.00616.54
7.4.90.0100.00716.38
7.4.80.0050.02119.39
7.4.70.0140.00316.48
7.4.60.0180.00016.38
7.4.50.0000.00516.53
7.4.40.0100.00716.44
7.4.30.0040.01416.54
7.4.00.0050.00314.82
7.3.330.0070.00013.01
7.3.320.0000.00613.04
7.3.310.0000.00716.19
7.3.300.0070.00016.24
7.3.290.0110.00916.27
7.3.280.0100.00916.21
7.3.270.0230.01517.40
7.3.260.0030.01516.51
7.3.250.0060.01116.45
7.3.240.0100.00716.36
7.3.230.0100.00516.39
7.3.210.0130.01016.50
7.3.200.0100.01019.39
7.3.190.0170.00316.32
7.3.180.0030.01316.19
7.3.170.0050.01216.39
7.3.160.0050.01016.30
7.2.330.0140.00516.56
7.2.320.0040.01216.43
7.2.310.0030.01316.25
7.2.300.0070.01316.22
7.2.290.0060.01016.66
7.2.60.0090.00616.78
7.2.00.0030.01318.98
7.1.200.0080.00815.63
7.1.100.0080.00318.21
7.1.70.0030.00717.13
7.1.60.0090.01619.40
7.1.50.0070.01516.76
7.1.00.0000.08022.36
7.0.200.0000.00716.72
7.0.140.0030.07321.95
7.0.90.0370.03319.80
7.0.80.0070.04019.79
7.0.70.0230.03019.85
7.0.60.0270.03719.93
7.0.50.0200.04320.25
7.0.40.0030.04020.05
7.0.30.0070.04020.23
7.0.20.0000.04320.08
7.0.10.0070.03720.12
7.0.00.0070.04720.07
5.6.280.0100.06721.10
5.6.240.0000.04720.63
5.6.230.0000.05020.54
5.6.220.0100.03320.55
5.6.210.0030.05720.37
5.6.200.0070.04020.88
5.6.190.0130.05021.00
5.6.180.0000.04321.18
5.6.170.0000.04321.03
5.6.160.0100.03721.00
5.6.150.0030.04321.01
5.6.140.0030.06321.13
5.6.130.0100.07021.16
5.6.120.0030.04021.16
5.6.110.0000.04721.11
5.6.100.0030.06021.02
5.6.90.0070.04021.07
5.6.80.0030.04020.42
5.6.70.0100.03320.54
5.6.60.0000.04020.46
5.6.50.0070.03320.52
5.6.40.0170.07020.38
5.6.30.0200.06720.48
5.6.20.0030.04720.32
5.6.10.0270.06320.40
5.6.00.0070.04720.37
5.5.380.0000.04320.33
5.5.370.0070.03720.31
5.5.360.0030.04020.47
5.5.350.0070.03720.33
5.5.340.0100.03720.73
5.5.330.0100.07320.83
5.5.320.0070.03720.91
5.5.310.0070.04320.63
5.5.300.0070.03720.86
5.5.290.0030.04720.90
5.5.280.0030.04320.85
5.5.270.0230.02020.63
5.5.260.0030.04320.88
5.5.250.0000.04320.66
5.5.240.0030.04320.27
5.5.230.0070.05720.20
5.5.220.0030.04319.99
5.5.210.0070.05720.30
5.5.200.0000.07720.20
5.5.190.0070.07320.26
5.5.180.0070.07720.18
5.5.160.0070.07720.27
5.5.150.0070.06020.22
5.5.140.0070.06019.98
5.5.130.0100.07720.25
5.5.120.0000.05320.21
5.5.110.0030.08720.07
5.5.100.0070.05720.16
5.5.90.0130.07320.03
5.5.80.0070.08020.06
5.5.70.0100.07720.14
5.5.60.0070.04019.92
5.5.50.0130.07020.05
5.5.40.0070.05020.14
5.5.30.0030.08720.01
5.5.20.0100.07720.03
5.5.10.0070.08320.09
5.5.00.0100.07320.11
5.4.450.0000.04719.47
5.4.440.0070.03719.55
5.4.430.0030.04019.13
5.4.420.0000.04319.55
5.4.410.0130.03019.19
5.4.400.0000.04019.06
5.4.390.0030.03718.96
5.4.380.0130.07319.12
5.4.370.0030.03719.07
5.4.360.0170.05718.79
5.4.350.0100.06718.90
5.4.340.0070.04719.12
5.4.320.0170.07018.98
5.4.310.0130.06718.84
5.4.300.0070.03718.96
5.4.290.0070.07719.03
5.4.280.0000.05318.94
5.4.270.0070.08018.97
5.4.260.0200.05718.98
5.4.250.0130.07318.96
5.4.240.0070.06018.94
5.4.230.0100.07018.93
5.4.220.0100.07718.98
5.4.210.0030.07719.05
5.4.200.0100.03319.06
5.4.190.0070.05018.78
5.4.180.0070.07719.11
5.4.170.0070.06719.08
5.4.160.0170.07018.79
5.4.150.0030.05319.07
5.4.140.0070.06716.33
5.4.130.0100.05016.07
5.4.120.0070.04016.01
5.4.110.0030.04016.30
5.4.100.0130.06716.38
5.4.90.0170.05016.20
5.4.80.0030.05016.29
5.4.70.0130.03016.29
5.4.60.0030.03716.18
5.4.50.0100.03016.38
5.4.40.0030.05716.45
5.4.30.0030.05316.33
5.4.20.0030.08016.28
5.4.10.0130.06316.40
5.4.00.0070.03715.69
5.3.290.0170.06714.66
5.3.280.0070.04014.54
5.3.270.0100.07314.50
5.3.260.0100.06714.43
5.3.250.0030.04714.56
5.3.240.0100.06714.58
5.3.230.0100.07314.46
5.3.220.0030.04714.43
5.3.210.0100.04314.55
5.3.200.0000.04714.55
5.3.190.0070.05314.41
5.3.180.0030.07014.53
5.3.170.0100.06314.46
5.3.160.0030.07714.49
5.3.150.0100.03314.55
5.3.140.0100.03314.54
5.3.130.0030.05014.55
5.3.120.0030.05314.47
5.3.110.0100.07714.54
5.3.100.0030.04314.03
5.3.90.0030.04713.87
5.3.80.0000.04013.92
5.3.70.0030.03713.77
5.3.60.0030.04013.98
5.3.50.0030.04013.90
5.3.40.0070.07013.71
5.3.30.0100.07013.66
5.3.20.0100.05013.62
5.3.10.0030.07713.63
5.3.00.0070.07313.59
5.2.170.0070.06011.00
5.2.160.0100.04711.21
5.2.150.0070.06010.97
5.2.140.0030.06310.96
5.2.130.0030.04311.08
5.2.120.0030.05710.95
5.2.110.0100.06010.91
5.2.100.0130.03310.94
5.2.90.0030.05711.06
5.2.80.0030.06311.16
5.2.70.0030.04710.94
5.2.60.0000.03311.03
5.2.50.0000.06711.00
5.2.40.0030.04010.95
5.2.30.0100.05310.75
5.2.20.0100.05310.75
5.2.10.0100.05010.78
5.2.00.0030.04310.77
5.1.60.0000.0679.82
5.1.50.0000.04710.00
5.1.40.0000.06010.00
5.1.30.0200.04710.26
5.1.20.0000.04010.27
5.1.10.0000.05710.05
5.1.00.0030.0609.89
5.0.50.0030.0438.42
5.0.40.0000.0338.45
5.0.30.0030.0338.21
5.0.20.0030.0238.04
5.0.10.0170.0278.21
5.0.00.0030.0638.25
4.4.90.0070.0176.93
4.4.80.0030.0206.93
4.4.70.0000.0276.93
4.4.60.0070.0306.93
4.4.50.0030.0376.93
4.4.40.0030.0576.93
4.4.30.0000.0306.93
4.4.20.0000.0476.93
4.4.10.0000.0176.93
4.4.00.0070.0336.93
4.3.110.0000.0336.93
4.3.100.0000.0376.93
4.3.90.0000.0376.93
4.3.80.0000.0576.93
4.3.70.0000.0176.93
4.3.60.0070.0276.93
4.3.50.0000.0206.93
4.3.40.0000.0236.93
4.3.30.0000.0176.93
4.3.20.0000.0176.93
4.3.10.0000.0176.93
4.3.00.0000.0176.93

preferences:
38.73 ms | 400 KiB | 5 Q