3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array(array(1, 2, 3)); echo json_encode($arr);

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)
8.3.40.0070.00718.54
8.3.30.0100.00318.79
8.3.20.0040.00420.12
8.3.10.0040.00421.96
8.3.00.0000.00722.44
8.2.170.0120.00322.96
8.2.160.0070.00720.39
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0040.00426.16
8.2.120.0050.00517.49
8.2.110.0000.00922.03
8.2.100.0060.00617.78
8.2.90.0040.00419.09
8.2.80.0090.00018.04
8.2.70.0030.00517.63
8.2.60.0060.00317.78
8.2.50.0000.00818.07
8.2.40.0000.00818.09
8.2.30.0000.00918.12
8.2.20.0050.00317.68
8.2.10.0040.00419.38
8.2.00.0040.00417.65
8.1.270.0000.00722.19
8.1.260.0070.00026.35
8.1.250.0070.00028.09
8.1.240.0090.00023.97
8.1.230.0040.00719.01
8.1.220.0080.00017.74
8.1.210.0080.00018.77
8.1.200.0060.00317.10
8.1.190.0040.00417.41
8.1.180.0000.00918.10
8.1.170.0030.00618.31
8.1.160.0000.00721.89
8.1.150.0040.00418.56
8.1.140.0000.00817.27
8.1.130.0080.00017.87
8.1.120.0040.00417.29
8.1.110.0060.00317.25
8.1.100.0070.00017.34
8.1.90.0030.00717.35
8.1.80.0040.00417.28
8.1.70.0030.00317.27
8.1.60.0000.00817.48
8.1.50.0000.00717.42
8.1.40.0030.00617.40
8.1.30.0020.00517.61
8.1.20.0000.00817.58
8.1.10.0000.00717.54
8.1.00.0070.00017.45
8.0.300.0070.00018.77
8.0.290.0040.00417.16
8.0.280.0000.00718.34
8.0.270.0040.00416.74
8.0.260.0030.00316.80
8.0.250.0030.00316.88
8.0.240.0100.00016.95
8.0.230.0030.00316.91
8.0.220.0030.00516.71
8.0.210.0000.00716.80
8.0.200.0070.00016.77
8.0.190.0000.00716.77
8.0.180.0070.00016.81
8.0.170.0030.00516.88
8.0.160.0070.00016.68
8.0.150.0000.00716.83
8.0.140.0000.00716.80
8.0.130.0030.00313.23
8.0.120.0000.00816.79
8.0.110.0000.00716.77
8.0.100.0070.00016.68
8.0.90.0000.00716.79
8.0.80.0000.01416.70
8.0.70.0000.00816.84
8.0.60.0030.00516.71
8.0.50.0040.00416.80
8.0.30.0120.00716.74
8.0.20.0140.01017.40
8.0.10.0000.00716.92
8.0.00.0080.01016.67
7.4.330.0060.00015.00
7.4.320.0030.00316.51
7.4.300.0030.00316.53
7.4.290.0070.00016.44
7.4.280.0040.00416.53
7.4.270.0000.00716.53
7.4.260.0070.00016.51
7.4.250.0040.00416.49
7.4.240.0020.00516.46
7.4.230.0030.00316.50
7.4.220.0090.01616.56
7.4.210.0070.00916.49
7.4.200.0070.00016.55
7.4.190.0070.00016.57
7.4.160.0030.01216.28
7.4.150.0130.00617.40
7.4.140.0080.01117.86
7.4.130.0040.01416.35
7.4.120.0140.00316.30
7.4.110.0110.00516.39
7.4.100.0060.01116.63
7.4.90.0040.01416.31
7.4.80.0150.00319.39
7.4.70.0040.01816.27
7.4.60.0030.01416.42
7.4.50.0040.00416.31
7.4.40.0130.00322.77
7.4.30.0070.01016.38
7.4.00.0100.00614.72
7.3.330.0050.00012.93
7.3.320.0000.00513.05
7.3.310.0030.00316.20
7.3.300.0050.00216.10
7.3.290.0000.01316.07
7.3.280.0090.00616.11
7.3.270.0180.00617.40
7.3.260.0170.00016.22
7.3.250.0110.00616.38
7.3.240.0030.01616.29
7.3.230.0060.00916.39
7.3.210.0040.01216.34
7.3.200.0100.01319.39
7.3.190.0030.01316.14
7.3.180.0090.00616.30
7.3.170.0040.01116.27
7.3.160.0130.00316.27
7.3.120.0000.01514.56
7.2.330.0090.00916.19
7.2.320.0100.00716.57
7.2.310.0030.01316.62
7.2.300.0090.00616.43
7.2.290.0030.02016.36
7.1.70.0000.01617.20
7.1.60.0000.02219.82
7.1.50.0100.01316.66
7.1.00.0000.09722.43
7.0.200.0080.00416.89
7.0.140.0030.07321.96
7.0.90.0130.07719.93
7.0.80.0070.07719.90
7.0.70.0130.05319.86
7.0.60.0130.07019.89
7.0.50.0600.04020.34
7.0.40.0130.03320.04
7.0.30.0130.08320.14
7.0.20.0170.07020.15
7.0.10.0100.08320.07
7.0.00.0100.08320.04
5.6.280.0030.07320.90
5.6.240.0100.05020.72
5.6.230.0070.05020.59
5.6.220.0170.05020.55
5.6.210.0030.04720.64
5.6.200.0030.04721.04
5.6.190.0000.07320.97
5.6.180.0070.07721.03
5.6.170.0130.06321.05
5.6.160.0070.07720.97
5.6.150.0070.04721.13
5.6.140.0070.08321.07
5.6.130.0100.07721.02
5.6.120.0100.08321.07
5.6.110.0200.07321.07
5.6.100.0070.05321.11
5.6.90.0100.07721.08
5.6.80.0100.05320.39
5.6.70.0030.07720.40
5.6.60.0030.05020.53
5.6.50.0070.07320.32
5.6.40.0130.07320.46
5.6.30.0170.04720.41
5.6.20.0200.04720.39
5.6.10.0100.07320.28
5.6.00.0070.06020.38
5.5.380.0030.08020.42
5.5.370.0030.08720.34
5.5.360.0100.07020.37
5.5.350.0230.06320.46
5.5.340.0170.07020.75
5.5.330.0030.04720.91
5.5.320.0100.04020.82
5.5.310.0000.07320.88
5.5.300.0000.06020.92
5.5.290.0170.06320.86
5.5.280.0000.06020.63
5.5.270.0030.06720.76
5.5.260.0130.04720.86
5.5.250.0070.06720.68
5.5.240.0070.06320.29
5.5.230.0000.06320.00
5.5.220.0030.06020.19
5.5.210.0130.07320.26
5.5.200.0100.04320.11
5.5.190.0100.07719.98
5.5.180.0070.07720.20
5.5.160.0100.07720.25
5.5.150.0070.04720.24
5.5.140.0070.05320.10
5.5.130.0100.04720.24
5.5.120.0100.07320.21
5.5.110.0030.05720.22
5.5.100.0300.06020.07
5.5.90.0070.05320.03
5.5.80.0100.05020.16
5.5.70.0100.07320.02
5.5.60.0100.05020.14
5.5.50.0030.05020.05
5.5.40.0100.07020.07
5.5.30.0100.07319.92
5.5.20.0170.03720.05
5.5.10.0100.07320.11
5.5.00.0130.05720.10
5.4.450.0070.08319.43
5.4.440.0070.08019.14
5.4.430.0130.04319.13
5.4.420.0130.06019.23
5.4.410.0100.04019.24
5.4.400.0030.07718.81
5.4.390.0070.08018.90
5.4.380.0070.05019.02
5.4.370.0030.05719.10
5.4.360.0070.05018.96
5.4.350.0070.07719.13
5.4.340.0170.06319.12
5.4.320.0030.08019.02
5.4.310.0100.04719.10
5.4.300.0130.08318.82
5.4.290.0030.06018.96
5.4.280.0100.03718.94
5.4.270.0070.07319.23
5.4.260.0070.03718.81
5.4.250.0100.07719.09
5.4.240.0200.06319.02
5.4.230.0100.08019.11
5.4.220.0100.06318.97
5.4.210.0030.05318.98
5.4.200.0130.05019.11
5.4.190.0070.04318.95
5.4.180.0000.04319.03
5.4.170.0130.07719.06
5.4.160.0100.07719.23
5.4.150.0100.03719.10
5.4.140.0170.06316.00
5.4.130.0070.07016.28
5.4.120.0000.05016.07
5.4.110.0030.06716.43
5.4.100.0100.05316.33
5.4.90.0000.07716.26
5.4.80.0100.05016.43
5.4.70.0030.04316.42
5.4.60.0070.04716.29
5.4.50.0030.04716.35
5.4.40.0070.06316.44
5.4.30.0130.06716.40
5.4.20.0000.07716.19
5.4.10.0100.07016.31
5.4.00.0070.04715.78
5.3.290.0070.07714.57
5.3.280.0230.06014.59
5.3.270.0070.07714.56
5.3.260.0130.05714.47
5.3.250.0100.07014.44
5.3.240.0100.07314.60
5.3.230.0000.06314.45
5.3.220.0170.07314.54
5.3.210.0030.04014.42
5.3.200.0070.08014.54
5.3.190.0130.05314.55
5.3.180.0100.07014.46
5.3.170.0000.08014.55
5.3.160.0100.07314.55
5.3.150.0170.06714.55
5.3.140.0130.07014.49
5.3.130.0070.06714.40
5.3.120.0100.04014.54
5.3.110.0070.07314.39
5.3.100.0070.03714.02
5.3.90.0000.04013.87
5.3.80.0070.03314.00
5.3.70.0070.04314.00
5.3.60.0030.08013.93
5.3.50.0070.07713.93
5.3.40.0070.07713.92
5.3.30.0030.05013.66
5.3.20.0170.07313.55
5.3.10.0070.05013.60
5.3.00.0100.07013.59
5.2.170.0030.06711.10
5.2.160.0100.04310.97
5.2.150.0070.06310.93
5.2.140.0070.06011.12
5.2.130.0070.05011.06
5.2.120.0030.04311.12
5.2.110.0070.05310.92
5.2.100.0030.06310.93
5.2.90.0070.06311.09
5.2.80.0030.06011.08
5.2.70.0000.06310.94
5.2.60.0070.06710.91
5.2.50.0000.06010.85
5.2.40.0030.04711.02
5.2.30.0030.06310.96
5.2.20.0200.04710.99
5.2.10.0130.05310.88
5.2.00.0100.05010.75
5.1.60.0070.0509.87
5.1.50.0030.0479.87
5.1.40.0030.0579.96
5.1.30.0030.04310.41
5.1.20.0070.04710.38
5.1.10.0100.05010.10
5.1.00.0070.04710.08
5.0.50.0030.0478.53
5.0.40.0000.0378.39
5.0.30.0030.0678.23
5.0.20.0030.0478.25
5.0.10.0100.0378.20
5.0.00.0030.0638.21
4.4.90.0070.0137.27
4.4.80.0070.0307.27
4.4.70.0000.0277.27
4.4.60.0030.0337.27
4.4.50.0030.0237.27
4.4.40.0000.0607.27
4.4.30.0000.0277.27
4.4.20.0000.0377.27
4.4.10.0030.0377.27
4.4.00.0100.0377.27
4.3.110.0030.0377.27
4.3.100.0100.0307.27
4.3.90.0100.0307.27
4.3.80.0030.0337.27
4.3.70.0030.0137.27
4.3.60.0030.0137.27
4.3.50.0030.0177.27
4.3.40.0000.0337.27
4.3.30.0000.0377.27
4.3.20.0000.0337.27
4.3.10.0070.0207.27
4.3.00.0000.0377.27

preferences:
51.35 ms | 400 KiB | 5 Q