3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('some' => 'test/'); $j = json_encode($a, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES); var_dump($j)

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)
5.4.310.0110.05712.46
5.4.300.0100.03912.46
5.4.290.0140.04712.46
5.4.280.0050.04512.36
5.4.270.0070.04212.36
5.4.260.0130.04612.36
5.4.250.0090.07612.36
5.4.240.0100.03812.36
5.4.230.0140.04512.35
5.4.220.0060.04012.35
5.4.210.0080.03712.35
5.4.200.0080.03612.35
5.4.190.0050.03712.35
5.4.180.0080.04612.35
5.4.170.0080.03412.36
5.4.160.0070.03512.35
5.4.150.0100.04612.35
5.4.140.0050.04912.04
5.4.130.0060.04512.02
5.4.120.0090.04311.98
5.4.110.0110.05511.98
5.4.100.0110.05211.98
5.4.90.0060.05511.98
5.4.80.0090.05211.98
5.4.70.0050.05311.97
5.4.60.0070.04911.97
5.4.50.0080.04911.97
5.4.40.0080.04311.96
5.4.30.0140.04711.96
5.4.20.0050.04411.95
5.4.10.0040.03611.96
5.4.00.0060.03611.45
5.3.290.0050.04012.80
5.3.280.0030.04112.71
5.3.270.0080.04512.72
5.3.260.0110.04912.71
5.3.250.0060.04712.72
5.3.240.0040.04212.72
5.3.230.0060.03712.71
5.3.220.0080.03512.68
5.3.210.0040.04312.68
5.3.200.0040.03812.68
5.3.190.0080.04512.68
5.3.180.0070.03712.68
5.3.170.0040.03912.67
5.3.160.0080.04012.67
5.3.150.0040.04012.67
5.3.140.0100.03512.66
5.3.130.0060.05012.66
5.3.120.0060.04612.66
5.3.110.0050.04012.66
5.3.100.0090.03612.12
5.3.90.0080.03912.09
5.3.80.0060.04812.07
5.3.70.0060.03812.08
5.3.60.0070.04612.07
5.3.50.0060.03612.00
5.3.40.0030.04212.00
5.3.30.0100.03211.95
5.3.20.0080.03911.72
5.3.10.0050.03611.70
5.3.00.0080.04011.68
5.2.170.0100.0509.19
5.2.160.0070.0459.19
5.2.150.0040.0359.18
5.2.140.0050.0329.18
5.2.130.0050.0299.14
5.2.120.0030.0319.14
5.2.110.0050.0309.15
5.2.100.0020.0339.14
5.2.90.0090.0349.14
5.2.80.0070.0299.14
5.2.70.0060.0439.14
5.2.60.0070.0419.09
5.2.50.0090.0439.06
5.2.40.0110.0499.03
5.2.30.0030.0389.01
5.2.20.0090.0379.00
5.2.10.0060.0318.93
5.2.00.0050.0318.78
5.1.60.0070.0318.07
5.1.50.0060.0278.07
5.1.40.0030.0268.05
5.1.30.0040.0308.40
5.1.20.0050.0258.41
5.1.10.0040.0268.14
5.1.00.0050.0268.14
5.0.50.0020.0226.62
5.0.40.0030.0206.48
5.0.30.0070.0286.29
5.0.20.0040.0196.27
5.0.10.0040.0196.24
5.0.00.0020.0316.23
4.4.90.0040.0154.78
4.4.80.0030.0154.75
4.4.70.0030.0154.76
4.4.60.0020.0164.75
4.4.50.0020.0164.77
4.4.40.0020.0374.71
4.4.30.0030.0194.76
4.4.20.0050.0144.85
4.4.10.0000.0184.85
4.4.00.0030.0334.76
4.3.110.0040.0204.67
4.3.100.0040.0224.66
4.3.90.0030.0224.63
4.3.80.0050.0324.58
4.3.70.0050.0214.63
4.3.60.0040.0184.62
4.3.50.0050.0264.63
4.3.40.0050.0304.54
4.3.30.0040.0193.28
4.3.20.0030.0173.25
4.3.10.0020.0213.22
4.3.00.0000.01715.94

preferences:
137.9 ms | 1394 KiB | 7 Q