3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = [['a': 1, 'b':2]]; echo json_encode($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)
5.4.350.0110.04612.01
5.4.340.0110.03412.01
5.4.320.0060.03812.50
5.4.310.0120.04112.50
5.4.300.0090.03812.50
5.4.290.0070.04012.50
5.4.280.0090.04912.39
5.4.270.0060.03812.39
5.4.260.0040.04212.39
5.4.250.0050.04312.39
5.4.240.0040.03912.39
5.4.230.0110.05112.38
5.4.220.0080.05112.38
5.4.210.0070.05112.38
5.4.200.0090.05112.38
5.4.190.0070.03812.38
5.4.180.0070.03812.38
5.4.170.0060.03812.39
5.4.160.0060.04912.38
5.4.150.0060.03712.38
5.4.140.0050.03912.07
5.4.130.0070.04212.05
5.4.120.0090.04512.01
5.4.110.0090.03912.01
5.4.100.0060.03512.01
5.4.90.0060.03712.01
5.4.80.0060.03712.01
5.4.70.0080.03412.01
5.4.60.0090.04912.01
5.4.50.0080.04112.01
5.4.40.0040.03812.00
5.4.30.0020.03911.99
5.4.20.0100.03411.99
5.4.10.0050.04011.99
5.4.00.0070.04011.48
5.3.290.0090.04212.80
5.3.280.0030.04212.71
5.3.270.0090.03512.72
5.3.260.0060.03812.72
5.3.250.0060.03712.72
5.3.240.0040.03912.72
5.3.230.0090.03512.71
5.3.220.0060.03812.68
5.3.210.0080.03912.68
5.3.200.0120.04612.68
5.3.190.0100.03712.68
5.3.180.0080.03812.67
5.3.170.0130.04212.67
5.3.160.0070.03912.68
5.3.150.0100.03412.68
5.3.140.0110.04812.66
5.3.130.0070.04712.66
5.3.120.0100.03812.66
5.3.110.0090.03912.66
5.3.100.0050.04412.12
5.3.90.0030.04712.08
5.3.80.0080.03612.07
5.3.70.0070.03712.07
5.3.60.0070.04012.06
5.3.50.0040.04312.00
5.3.40.0090.03912.00
5.3.30.0050.03611.95
5.3.20.0080.04011.72
5.3.10.0100.03811.70
5.3.00.0030.04011.68
5.2.170.0050.0319.18
5.2.160.0040.0299.18
5.2.150.0060.0309.18
5.2.140.0070.0289.18
5.2.130.0080.0359.14
5.2.120.0120.0339.14
5.2.110.0040.0349.15
5.2.100.0030.0329.14
5.2.90.0060.0299.14
5.2.80.0090.0309.14
5.2.70.0070.0339.14
5.2.60.0090.0379.09
5.2.50.0060.0479.05
5.2.40.0050.0349.03
5.2.30.0060.0349.01
5.2.20.0060.0309.00
5.2.10.0020.0328.93
5.2.00.0040.0318.78
5.1.60.0060.0248.07
5.1.50.0050.0298.07
5.1.40.0040.0278.05
5.1.30.0070.0258.40
5.1.20.0020.0298.42
5.1.10.0020.0278.14
5.1.00.0060.0248.14
5.0.50.0010.0256.62
5.0.40.0060.0196.48
5.0.30.0030.0326.29
5.0.20.0050.0186.27
5.0.10.0040.0196.23
5.0.00.0040.0306.23
4.4.90.0040.0154.78
4.4.80.0030.0154.76
4.4.70.0050.0134.76
4.4.60.0040.0154.75
4.4.50.0040.0144.77
4.4.40.0030.0264.71
4.4.30.0030.0164.75
4.4.20.0040.0164.84
4.4.10.0030.0174.85
4.4.00.0090.0674.76
4.3.110.0040.0174.67
4.3.100.0060.0144.67
4.3.90.0020.0164.63
4.3.80.0050.0274.59
4.3.70.0030.0144.63
4.3.60.0050.0194.62
4.3.50.0040.0204.63
4.3.40.0050.0294.54
4.3.30.0010.0223.28
4.3.20.0030.0153.25
4.3.10.0020.0213.22
4.3.00.0200.0207.66

preferences:
142.8 ms | 1394 KiB | 7 Q