3v4l.org

run code in 300+ PHP versions simultaneously
<?php $ret = []; $ret['a'] = "1"; print json_encode($ret);

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)
8.3.60.0110.00416.25
8.3.50.0100.00721.92
8.3.40.0070.00718.97
8.3.30.0080.00519.18
8.3.20.0040.00420.16
8.3.10.0000.00723.68
8.3.00.0060.00317.59
8.2.180.0040.01118.25
8.2.170.0070.00722.96
8.2.160.0070.00720.10
8.2.150.0030.00524.18
8.2.140.0030.00524.66
8.2.130.0040.01126.16
8.2.120.0080.00022.00
8.2.110.0080.00022.29
8.2.100.0060.00617.73
8.2.90.0040.00419.36
8.2.80.0030.00517.97
8.2.70.0060.00317.75
8.2.60.0030.00617.93
8.2.50.0000.00918.07
8.2.40.0040.00418.34
8.2.30.0000.00718.13
8.2.20.0070.00017.82
8.2.10.0040.00417.97
8.2.00.0030.00717.56
8.1.280.0120.00625.92
8.1.270.0000.00823.97
8.1.260.0000.00826.35
8.1.250.0000.00728.09
8.1.240.0090.00023.97
8.1.230.0080.00419.05
8.1.220.0080.00017.74
8.1.210.0000.00818.77
8.1.200.0090.00017.48
8.1.190.0040.00417.53
8.1.180.0000.00818.10
8.1.170.0050.00318.41
8.1.160.0050.00221.94
8.1.150.0000.00718.56
8.1.140.0070.00017.37
8.1.130.0030.00317.96
8.1.120.0070.00017.42
8.1.110.0000.00817.44
8.1.100.0000.00817.39
8.1.90.0070.00017.45
8.1.80.0000.00717.38
8.1.70.0000.00717.35
8.1.60.0030.00617.57
8.1.50.0040.00417.32
8.1.40.0000.00717.44
8.1.30.0030.00517.49
8.1.20.0040.00417.63
8.1.10.0070.00017.59
8.1.00.0060.00317.56
8.0.300.0070.00018.77
8.0.290.0000.00717.18
8.0.280.0030.00318.43
8.0.270.0030.00517.25
8.0.260.0030.00317.24
8.0.250.0040.00416.94
8.0.240.0030.00316.87
8.0.230.0030.00316.79
8.0.220.0070.00016.78
8.0.210.0030.00316.85
8.0.200.0040.00416.95
8.0.190.0070.00016.88
8.0.180.0030.00616.91
8.0.170.0000.00816.84
8.0.160.0040.00416.85
8.0.150.0050.00216.79
8.0.140.0050.00216.85
8.0.130.0000.00613.34
8.0.120.0040.00416.81
8.0.110.0070.00016.82
8.0.100.0000.00716.93
8.0.90.0030.00316.84
8.0.80.0100.01016.87
8.0.70.0000.00816.80
8.0.60.0040.00416.89
8.0.50.0000.00716.68
8.0.30.0130.00716.77
8.0.20.0120.01017.40
8.0.10.0000.00716.93
8.0.00.0090.00816.77
7.4.330.0030.00315.00
7.4.320.0060.00016.54
7.4.300.0030.00316.42
7.4.290.0040.00416.58
7.4.280.0070.00016.45
7.4.270.0030.00316.41
7.4.260.0000.00716.35
7.4.250.0040.00416.49
7.4.240.0020.00516.51
7.4.230.0000.00716.29
7.4.220.0110.00416.58
7.4.210.0070.00616.54
7.4.200.0070.00016.57
7.4.190.0000.00716.35
7.4.160.0090.00916.48
7.4.150.0090.00917.40
7.4.140.0070.01117.86
7.4.130.0060.01216.35
7.4.120.0070.01016.60
7.4.110.0150.00616.73
7.4.100.0130.00916.32
7.4.90.0100.00716.65
7.4.80.0080.00819.39
7.4.70.0080.01416.32
7.4.60.0150.00316.63
7.4.50.0040.00416.53
7.4.40.0040.01522.77
7.4.30.0070.01016.51
7.4.00.0040.01215.02
7.3.330.0030.00312.94
7.3.320.0020.00213.00
7.3.310.0000.00716.04
7.3.300.0030.00316.19
7.3.290.0100.01016.25
7.3.280.0100.00716.20
7.3.270.0120.00617.40
7.3.260.0180.00016.28
7.3.250.0110.01116.15
7.3.240.0040.01216.32
7.3.230.0070.01016.39
7.3.210.0100.00716.20
7.3.200.0140.00419.39
7.3.190.0030.01816.21
7.3.180.0080.00816.39
7.3.170.0120.00816.37
7.3.160.0060.01116.21
7.3.120.0040.01115.00
7.2.330.0110.00716.27
7.2.320.0080.00816.22
7.2.310.0030.01316.50
7.2.300.0060.01616.72
7.2.290.0120.00516.79
7.2.00.0000.01519.29
7.1.100.0000.01018.19
7.1.70.0120.00017.20
7.1.60.0070.00719.46
7.1.50.0100.01016.91
7.1.00.0030.07722.30
7.0.200.0030.00316.61
7.0.140.0030.07322.09
7.0.90.0100.04319.83
7.0.80.0100.04019.93
7.0.70.0200.03319.87
7.0.60.0070.04319.90
7.0.50.0100.03320.39
7.0.40.0070.04020.09
7.0.30.0000.05020.11
7.0.20.0130.07019.95
7.0.10.0070.07320.08
7.0.00.0100.08020.09
5.6.280.0100.06720.90
5.6.240.0130.03320.71
5.6.230.0000.04720.59
5.6.220.0100.03320.67
5.6.210.0030.04020.74
5.6.200.0030.04321.11
5.6.190.0070.03721.11
5.6.180.0100.03721.13
5.6.170.0170.03721.17
5.6.160.0030.09021.08
5.6.150.0000.07721.07
5.6.140.0130.04321.13
5.6.130.0170.05021.10
5.6.120.0100.05721.10
5.6.110.0130.08721.07
5.6.100.0230.07021.00
5.6.90.0030.04720.97
5.6.80.0030.05720.31
5.6.70.0070.06720.42
5.6.60.0130.06720.31
5.6.50.0000.08320.31
5.6.40.0030.08720.30
5.6.30.0030.08020.37
5.6.20.0100.05020.47
5.6.10.0070.04720.36
5.6.00.0100.07320.50
5.5.380.0100.03320.44
5.5.370.0030.04320.40
5.5.360.0000.04720.38
5.5.350.0030.04020.44
5.5.340.0030.04320.79
5.5.330.0070.03720.85
5.5.320.0030.04320.82
5.5.310.0070.08020.72
5.5.300.0030.05020.97
5.5.290.0030.08720.71
5.5.280.0070.05720.72
5.5.270.0030.08320.79
5.5.260.0130.07020.91
5.5.250.0170.06720.64
5.5.240.0100.05020.02
5.5.230.0130.06320.17
5.5.220.0030.04320.16
5.5.210.0000.04320.24
5.5.200.0030.04720.27
5.5.190.0200.06720.25
5.5.180.0100.06720.20
5.5.160.0100.07720.27
5.5.150.0000.06020.24
5.5.140.0130.07020.07
5.5.130.0070.03720.24
5.5.120.0170.06320.27
5.5.110.0070.08020.25
5.5.100.0000.06020.09
5.5.90.0070.07019.96
5.5.80.0030.04019.94
5.5.70.0000.04320.07
5.5.60.0030.05320.13
5.5.50.0100.05319.94
5.5.40.0100.07020.14
5.5.30.0070.04020.10
5.5.20.0130.04320.00
5.5.10.0070.08720.13
5.5.00.0070.07019.99
5.4.450.0030.05019.47
5.4.440.0000.08319.45
5.4.430.0070.08019.46
5.4.420.0070.07719.44
5.4.410.0100.04719.43
5.4.400.0070.07019.06
5.4.390.0070.05018.94
5.4.380.0030.08319.09
5.4.370.0070.03719.24
5.4.360.0100.05319.11
5.4.350.0100.05018.96
5.4.340.0170.07318.80
5.4.320.0100.06018.90
5.4.310.0100.07019.06
5.4.300.0100.06719.12
5.4.290.0070.07019.02
5.4.280.0070.03719.22
5.4.270.0070.07019.04
5.4.260.0070.04019.02
5.4.250.0000.05719.02
5.4.240.0070.06719.11
5.4.230.0200.02019.15
5.4.220.0030.04018.97
5.4.210.0130.06719.07
5.4.200.0100.07719.09
5.4.190.0070.05719.04
5.4.180.0070.06318.94
5.4.170.0200.06319.04
5.4.160.0070.04019.01
5.4.150.0100.07319.06
5.4.140.0070.04016.02
5.4.130.0030.07016.27
5.4.120.0130.06016.33
5.4.110.0000.08016.34
5.4.100.0000.04016.42
5.4.90.0130.06316.21
5.4.80.0030.03716.25
5.4.70.0030.04316.29
5.4.60.0000.05316.20
5.4.50.0070.06016.33
5.4.40.0100.07316.44
5.4.30.0070.07016.43
5.4.20.0100.05016.23
5.4.10.0030.04716.33
5.4.00.0070.06715.76
5.3.290.0200.07014.57
5.3.280.0030.04314.58
5.3.270.0100.07014.61
5.3.260.0100.07014.55
5.3.250.0030.07714.47
5.3.240.0030.07714.59
5.3.230.0030.05714.61
5.3.220.0070.07314.39
5.3.210.0070.04014.43
5.3.200.0030.07714.50
5.3.190.0070.07714.39
5.3.180.0100.04714.38
5.3.170.0070.06714.52
5.3.160.0030.04014.40
5.3.150.0100.06014.43
5.3.140.0100.03014.44
5.3.130.0100.06014.41
5.3.120.0070.08014.51
5.3.110.0030.06714.41
5.3.100.0030.07714.00
5.3.90.0100.06713.97
5.3.80.0000.04013.99
5.3.70.0100.03713.87
5.3.60.0100.06713.93
5.3.50.0130.07013.81
5.3.40.0100.06013.85
5.3.30.0000.04713.91
5.3.20.0100.06313.63
5.3.10.0030.04013.61
5.3.00.0000.06313.58
5.2.170.0100.03311.22
5.2.160.0000.06311.16
5.2.150.0030.03310.98
5.2.140.0070.06711.13
5.2.130.0030.05711.17
5.2.120.0030.03311.09
5.2.110.0030.03711.16
5.2.100.0030.05710.95
5.2.90.0100.05711.12
5.2.80.0130.05011.05
5.2.70.0100.04711.13
5.2.60.0030.04711.12
5.2.50.0070.06010.97
5.2.40.0070.05710.93
5.2.30.0070.04710.80
5.2.20.0030.06311.03
5.2.10.0100.02710.93
5.2.00.0100.05010.72
5.1.60.0070.05310.05
5.1.50.0000.0339.83
5.1.40.0030.0539.96
5.1.30.0030.05310.41
5.1.20.0030.04010.35
5.1.10.0030.04010.11
5.1.00.0100.05010.05
5.0.50.0070.0438.63
5.0.40.0000.0378.41
5.0.30.0100.0578.23
5.0.20.0030.0208.28
5.0.10.0000.0438.15
5.0.00.0070.0578.25
4.4.90.0000.0377.35
4.4.80.0100.0277.35
4.4.70.0030.0177.35
4.4.60.0030.0177.35
4.4.50.0130.0077.35
4.4.40.0000.0607.35
4.4.30.0030.0177.35
4.4.20.0070.0277.35
4.4.10.0000.0207.35
4.4.00.0030.0277.35
4.3.110.0000.0237.35
4.3.100.0000.0337.35
4.3.90.0000.0337.35
4.3.80.0070.0507.35
4.3.70.0030.0277.35
4.3.60.0070.0207.35
4.3.50.0000.0337.35
4.3.40.0000.0407.35
4.3.30.0030.0237.35
4.3.20.0000.0377.35
4.3.10.0070.0177.35
4.3.00.0000.0207.35

preferences:
42.23 ms | 401 KiB | 5 Q