3v4l.org

run code in 300+ PHP versions simultaneously
<?php $data = [ 'a' => 1, 'b' => 2, ]; echo json_encode($data);

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)
8.3.60.0110.01116.63
8.3.50.0030.01016.11
8.3.40.0040.01118.66
8.3.30.0090.00618.50
8.3.20.0120.00321.71
8.3.10.0050.00323.56
8.3.00.0040.00417.68
8.2.180.0130.00716.63
8.2.170.0070.00722.96
8.2.160.0040.01120.39
8.2.150.0030.00624.18
8.2.140.0030.00624.66
8.2.130.0050.00326.16
8.2.120.0040.00421.04
8.2.110.0030.00622.12
8.2.100.0110.00018.06
8.2.90.0000.00918.33
8.2.80.0040.00417.97
8.2.70.0040.00417.93
8.2.60.0000.00918.09
8.2.50.0090.00018.10
8.2.40.0000.00720.55
8.2.30.0000.00720.94
8.2.20.0000.00717.91
8.2.10.0000.00718.05
8.2.00.0040.00418.03
8.1.280.0070.01125.92
8.1.270.0070.00018.88
8.1.260.0120.00626.35
8.1.250.0000.00728.09
8.1.240.0040.00420.39
8.1.230.0030.00720.88
8.1.220.0000.00817.79
8.1.210.0030.00518.77
8.1.200.0060.00317.11
8.1.190.0050.00317.22
8.1.180.0080.00018.10
8.1.170.0070.00018.85
8.1.160.0040.00418.99
8.1.150.0000.00718.77
8.1.140.0030.00519.37
8.1.130.0070.00018.71
8.1.120.0070.00017.35
8.1.110.0000.00817.36
8.1.100.0050.00217.37
8.1.90.0030.00717.41
8.1.80.0040.00417.38
8.1.70.0000.00717.27
8.1.60.0070.00017.55
8.1.50.0060.00617.44
8.1.40.0000.00817.32
8.1.30.0060.00317.47
8.1.20.0000.00717.41
8.1.10.0040.00417.50
8.1.00.0040.00417.41
8.0.300.0040.00419.48
8.0.290.0000.00816.63
8.0.280.0000.00718.43
8.0.270.0000.00717.22
8.0.260.0030.00318.93
8.0.250.0000.00716.81
8.0.240.0040.00416.91
8.0.230.0030.00316.89
8.0.220.0030.00316.82
8.0.210.0000.00716.81
8.0.200.0030.00316.86
8.0.190.0000.00816.88
8.0.180.0040.00416.79
8.0.170.0000.00716.89
8.0.160.0020.00516.68
8.0.150.0040.00416.75
8.0.140.0040.00416.81
8.0.130.0040.00413.20
8.0.120.0040.00416.75
8.0.110.0000.00716.85
8.0.100.0030.00516.69
8.0.90.0050.00216.68
8.0.80.0110.00416.79
8.0.70.0040.00416.74
8.0.60.0080.00016.61
8.0.50.0000.00716.92
8.0.30.0050.01316.74
8.0.20.0150.01317.40
8.0.10.0080.00016.90
8.0.00.0120.00616.62
7.4.330.0000.00415.55
7.4.320.0000.00616.52
7.4.300.0060.00016.53
7.4.290.0040.00416.56
7.4.280.0000.00716.55
7.4.270.0000.00716.32
7.4.260.0030.00316.48
7.4.250.0030.00316.39
7.4.240.0000.00816.35
7.4.230.0040.00416.56
7.4.220.0190.00616.50
7.4.210.0030.01216.56
7.4.200.0050.00216.40
7.4.160.0080.00816.22
7.4.150.0060.01217.40
7.4.140.0100.01317.86
7.4.130.0150.00316.50
7.4.120.0130.01016.44
7.4.110.0120.00616.46
7.4.100.0150.00616.46
7.4.90.0140.00316.27
7.4.80.0070.01019.39
7.4.70.0140.00716.31
7.4.60.0050.01116.49
7.4.50.0090.00616.36
7.4.40.0150.00316.36
7.4.30.0060.01016.40
7.4.00.0050.01214.66
7.3.330.0000.00612.97
7.3.320.0050.00012.96
7.3.310.0000.00815.96
7.3.300.0060.00016.04
7.3.290.0060.00716.14
7.3.280.0080.00816.14
7.3.270.0110.00617.40
7.3.260.0100.01016.07
7.3.250.0110.00716.27
7.3.240.0080.00816.29
7.3.230.0100.00716.51
7.3.210.0080.00816.41
7.3.200.0080.01016.29
7.3.190.0060.01016.27
7.3.180.0030.01316.43
7.3.170.0080.00816.34
7.3.160.0080.00816.13
7.2.330.0030.01616.52
7.2.320.0060.01516.33
7.2.310.0070.01016.55
7.2.300.0120.00616.25
7.2.290.0130.00316.70
7.2.60.0060.00616.57
7.2.50.0120.00616.67
7.1.200.0060.00615.61
7.1.70.0060.00916.80
7.1.60.0570.01032.90
7.1.50.0500.01332.93
7.1.40.0670.01332.56
7.1.30.0670.01032.77
7.1.20.0570.01032.80
7.1.10.0430.01014.76
7.1.00.0630.01714.72
7.0.200.0570.00315.01
7.0.190.0570.00714.88
7.0.180.0430.01014.31
7.0.170.0600.00714.57
7.0.160.0670.00714.48
7.0.150.0500.02014.39
7.0.140.0500.00714.58
7.0.130.0530.00714.55
7.0.120.0400.01314.69
7.0.110.0530.00714.50
7.0.100.0400.01714.34
7.0.90.0430.01014.34
7.0.80.0470.01014.60
7.0.70.0500.00714.35
7.0.60.0470.01014.28
7.0.50.0530.00714.60
7.0.40.0530.01014.66
7.0.30.0400.01714.66
7.0.20.0470.01314.35
7.0.10.1130.00714.55
7.0.00.0670.01314.66

preferences:
50.03 ms | 400 KiB | 5 Q