3v4l.org

run code in 300+ PHP versions simultaneously
<?php $ar['key'] = "name"; $array[] = $json_encode($ar); $json = $json_encode($array); echo $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)
8.3.60.0000.01518.43
8.3.50.0020.01421.92
8.3.40.0070.01418.84
8.3.30.0110.00418.60
8.3.20.0040.00419.20
8.3.10.0090.00023.53
8.3.00.0040.00420.88
8.2.180.0070.00716.63
8.2.170.0080.00822.96
8.2.160.0030.01019.16
8.2.150.0120.00324.18
8.2.140.0030.00624.66
8.2.130.0080.00020.53
8.2.120.0040.00426.35
8.2.110.0110.00021.06
8.2.100.0040.00717.72
8.2.90.0000.00818.16
8.2.80.0050.00318.22
8.2.70.0030.00517.63
8.2.60.0030.00517.50
8.2.50.0040.00417.63
8.2.40.0040.00417.63
8.2.30.0000.00719.11
8.2.20.0050.00317.73
8.2.10.0080.00018.09
8.2.00.0000.00817.92
8.1.280.0060.00925.92
8.1.270.0040.00423.96
8.1.260.0050.00228.09
8.1.250.0040.00428.09
8.1.240.0070.00322.48
8.1.230.0060.00620.88
8.1.220.0000.00817.78
8.1.210.0030.00518.91
8.1.200.0040.00417.35
8.1.190.0090.00017.22
8.1.180.0080.00018.10
8.1.170.0040.00418.39
8.1.160.0000.00718.90
8.1.150.0030.00518.76
8.1.140.0080.00019.39
8.1.130.0030.00317.57
8.1.120.0000.00717.35
8.1.110.0080.00417.22
8.1.100.0000.00717.30
8.1.90.0000.00717.23
8.1.80.0000.00917.28
8.1.70.0030.00317.36
8.1.60.0000.01217.38
8.1.50.0050.00317.40
8.1.40.0040.00417.48
8.1.30.0040.00417.45
8.1.20.0050.00317.59
8.1.10.0050.00317.52
8.1.00.0050.00317.36
8.0.300.0040.00419.90
8.0.290.0040.00416.75
8.0.280.0030.00318.29
8.0.270.0030.00317.14
8.0.260.0030.00317.09
8.0.250.0030.00316.80
8.0.240.0000.00816.88
8.0.230.0030.00516.81
8.0.220.0040.00416.90
8.0.210.0040.00416.91
8.0.200.0030.00316.83
8.0.190.0080.00016.98
8.0.180.0070.00016.89
8.0.170.0040.00416.76
8.0.160.0000.00716.77
8.0.150.0000.00716.83
8.0.140.0070.00416.75
8.0.130.0060.00313.24
8.0.120.0090.00016.73
8.0.110.0000.00716.83
8.0.100.0000.00716.77
8.0.90.0050.00216.75
8.0.80.0100.00916.79
8.0.70.0070.00016.88
8.0.60.0000.00716.71
8.0.50.0070.00016.73
8.0.30.0150.00516.92
8.0.20.0100.01117.40
8.0.10.0000.00716.75
8.0.00.0040.01516.95
7.4.330.0000.00715.08
7.4.320.0000.00616.51
7.4.300.0070.00016.61
7.4.290.0000.00716.63
7.4.280.0040.00416.55
7.4.270.0030.00316.49
7.4.260.0000.00716.57
7.4.250.0040.00416.59
7.4.240.0070.00016.61
7.4.230.0030.00316.66
7.4.220.0110.00716.42
7.4.210.0000.01616.53
7.4.200.0000.00716.47
7.4.160.0060.00916.69
7.4.150.0090.00917.40
7.4.140.0140.00517.86
7.4.130.0100.01016.37
7.4.120.0100.01016.50
7.4.110.0090.00916.72
7.4.100.0100.00716.38
7.4.90.0100.00716.51
7.4.80.0130.00319.39
7.4.70.0070.01016.53
7.4.60.0060.00916.50
7.4.50.0030.01316.46
7.4.40.0100.00716.28
7.4.30.0120.00416.53
7.4.00.0120.00314.89
7.3.330.0030.00313.25
7.3.320.0030.00313.05
7.3.310.0030.00316.45
7.3.300.0040.00416.33
7.3.290.0090.00716.39
7.3.280.0100.00616.33
7.3.270.0100.00617.40
7.3.260.0110.01016.32
7.3.250.0100.00816.42
7.3.240.0110.00716.34
7.3.230.0060.01116.39
7.3.210.0060.01116.28
7.3.200.0110.00616.26
7.3.190.0080.00816.57
7.3.180.0090.00616.36
7.3.170.0110.01116.59
7.3.160.0030.01416.45
7.3.10.0110.00716.22
7.3.00.0110.00715.75
7.2.330.0160.00616.39
7.2.320.0100.01016.48
7.2.310.0090.00916.63
7.2.300.0130.00316.27
7.2.290.0090.00816.29
7.2.130.0130.00316.25
7.2.120.0150.00416.16
7.2.110.0060.01016.37
7.2.100.0230.00316.58
7.2.90.0140.00716.29
7.2.80.0130.00716.93
7.2.70.0110.00416.49
7.2.60.0150.00316.65
7.2.50.0160.00516.39
7.2.40.0120.01016.40
7.2.30.0030.01316.66
7.2.20.0150.00316.05
7.2.10.0130.00816.50
7.2.00.0110.00617.94
7.1.250.0070.00715.19
7.1.200.0070.00715.46
7.1.100.0060.00918.14
7.1.70.0040.00417.18
7.1.60.0100.01019.47
7.1.50.0070.01716.56
7.1.00.0070.07322.31
7.0.200.0040.00716.66
7.0.70.1600.04719.84
7.0.60.1330.05319.84
7.0.50.1430.06020.34
7.0.40.1630.06320.29
7.0.30.1700.06020.21
7.0.20.1500.05320.26
7.0.10.1670.05320.22
7.0.00.1900.07320.27
5.6.280.0000.07320.90
5.6.220.1200.05320.63
5.6.210.0970.06720.54
5.6.200.1230.05720.99
5.6.190.1030.06721.09
5.6.180.1530.04721.01
5.6.170.1300.07021.09
5.6.160.1630.07021.10
5.6.150.1530.06721.10
5.6.140.1100.07021.00
5.6.130.1230.06721.05
5.6.120.0270.04721.07
5.6.110.0630.05721.05
5.6.100.1200.07020.97
5.6.90.1270.05720.99
5.6.80.0070.06320.48
5.6.70.0870.05720.39
5.6.60.1300.05320.52
5.6.50.1100.05720.46
5.6.40.1370.06320.36
5.6.30.1230.05320.54
5.6.20.1330.05320.36
5.6.10.1130.06020.45
5.6.00.1130.06320.35
5.5.360.1270.05720.49
5.5.350.1270.05720.42
5.5.340.1300.05320.92
5.5.330.1130.05020.93
5.5.320.1300.05320.85
5.5.310.1300.06020.88
5.5.300.1570.06320.97
5.5.290.1430.07020.82
5.5.280.0170.05720.84
5.5.270.1200.06020.68
5.5.260.1330.06720.92
5.5.250.1170.05720.77
5.5.240.0070.06020.32
5.5.230.1130.05020.34
5.5.220.1270.05320.19
5.5.210.1270.05320.21
5.5.200.1230.06020.30
5.5.190.1170.06720.20
5.5.180.1130.06020.19
5.5.160.1370.05020.11
5.5.150.1200.05720.19
5.5.140.1170.05320.25
5.5.130.1200.05720.11
5.5.120.1230.05020.26
5.5.110.1330.04020.17
5.5.100.1330.05020.23
5.5.90.1230.05019.99
5.5.80.1030.06020.00
5.5.70.1170.05320.16
5.5.60.1130.04720.21
5.5.50.1070.05720.21
5.5.40.1270.04720.14
5.5.30.1100.05720.14
5.5.20.1170.05020.09
5.5.10.1230.05020.17
5.5.00.1030.06719.96

preferences:
70.65 ms | 401 KiB | 5 Q