3v4l.org

run code in 300+ PHP versions simultaneously
<?php class a {} $obj = new a; $str = json_encode($obj); var_dump($str); var_dump(json_decode($str))

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)
5.4.340.0080.03212.02
5.4.320.0090.03312.51
5.4.310.0070.04212.50
5.4.300.0070.03612.51
5.4.290.0060.03812.50
5.4.280.0060.03512.40
5.4.270.0030.03912.40
5.4.260.0090.03512.40
5.4.250.0050.03912.40
5.4.240.0060.03612.40
5.4.230.0030.04012.39
5.4.220.0060.03512.39
5.4.210.0070.03312.39
5.4.200.0060.03512.39
5.4.190.0050.03612.39
5.4.180.0080.03212.39
5.4.170.0050.03612.40
5.4.160.0040.03712.40
5.4.150.0040.03712.39
5.4.140.0060.03612.08
5.4.130.0050.04112.06
5.4.120.0060.03312.02
5.4.110.0060.03812.02
5.4.100.0050.03712.03
5.4.90.0030.03812.02
5.4.80.0070.03412.03
5.4.70.0070.04112.02
5.4.60.0090.03712.02
5.4.50.0070.03412.02
5.4.40.0050.03612.00
5.4.30.0040.03512.00
5.4.20.0050.03512.00
5.4.10.0050.03412.00
5.4.00.0080.03811.50
5.3.290.0050.03912.80
5.3.280.0040.03912.71
5.3.270.0070.04312.72
5.3.260.0040.04112.72
5.3.250.0090.03412.72
5.3.240.0070.03612.72
5.3.230.0110.03312.71
5.3.220.0050.03812.68
5.3.210.0090.03512.68
5.3.200.0050.04212.68
5.3.190.0060.03712.68
5.3.180.0050.03612.67
5.3.170.0040.03712.67
5.3.160.0060.03512.67
5.3.150.0050.04012.67
5.3.140.0110.03412.66
5.3.130.0070.03712.66
5.3.120.0040.03912.66
5.3.110.0050.04012.66
5.3.100.0060.03612.12
5.3.90.0030.03812.10
5.3.80.0150.03312.09
5.3.70.0050.03812.09
5.3.60.0080.03312.07
5.3.50.0060.04612.03
5.3.40.0070.04112.02
5.3.30.0070.03411.98
5.3.20.0070.03311.77
5.3.10.0060.03411.73
5.3.00.0050.04111.72
5.2.170.0040.0309.22
5.2.160.0060.0299.22
5.2.150.0040.0369.22
5.2.140.0050.0289.22
5.2.130.0060.0329.18
5.2.120.0040.0289.18
5.2.110.0060.0309.18
5.2.100.0050.0299.18
5.2.90.0030.0309.17
5.2.80.0030.0319.17
5.2.70.0040.0299.17
5.2.60.0060.0299.13
5.2.50.0010.0339.09
5.2.40.0090.0339.07
5.2.30.0070.0279.04
5.2.20.0040.0289.04
5.2.10.0060.0278.94
5.2.00.0040.0318.80
5.1.60.0060.0288.09
5.1.50.0070.0228.08
5.1.40.0030.0248.07
5.1.30.0040.0258.41
5.1.20.0040.0258.45
5.1.10.0020.0278.16
5.1.00.0050.0248.16
5.0.50.0030.0216.64
5.0.40.0040.0196.50
5.0.30.0060.0326.31
5.0.20.0050.0186.27
5.0.10.0040.0196.26
5.0.00.0040.0316.25
4.4.90.0060.0124.78
4.4.80.0030.0144.75
4.4.70.0010.0164.75
4.4.60.0020.0154.76
4.4.50.0010.0164.77
4.4.40.0040.0234.71
4.4.30.0050.0134.76
4.4.20.0020.0164.84
4.4.10.0020.0154.85
4.4.00.0030.0264.76
4.3.110.0040.0144.67
4.3.100.0020.0154.66
4.3.90.0030.0144.64
4.3.80.0010.0254.58
4.3.70.0050.0154.63
4.3.60.0040.0144.63
4.3.50.0040.0144.63
4.3.40.0020.0244.54
4.3.30.0010.0173.30
4.3.20.0030.0153.27
4.3.10.0010.0173.23
4.3.00.0170.0206.90

preferences:
145.03 ms | 1394 KiB | 7 Q