3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(0 =>array("xsd"=>"wer"),1 =>array("123"=>"456")); echo json_encode($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)
5.4.310.0050.04612.49
5.4.300.0040.03912.50
5.4.290.0040.04112.49
5.4.280.0060.03612.39
5.4.270.0080.03612.39
5.4.260.0050.03912.39
5.4.250.0110.04412.39
5.4.240.0080.03412.39
5.4.230.0030.04112.38
5.4.220.0050.03912.38
5.4.210.0040.04412.38
5.4.200.0110.05812.38
5.4.190.0120.05912.38
5.4.180.0160.04812.38
5.4.170.0060.05712.38
5.4.160.0160.04412.38
5.4.150.0130.04612.38
5.4.140.0070.05412.07
5.4.130.0030.04312.05
5.4.120.0050.03712.01
5.4.110.0060.05212.01
5.4.100.0090.04112.01
5.4.90.0060.05312.01
5.4.80.0130.04612.01
5.4.70.0050.04012.01
5.4.60.0050.05012.01
5.4.50.0050.03812.00
5.4.40.0090.04611.99
5.4.30.0080.03511.99
5.4.20.0110.04711.99
5.4.10.0060.03611.99
5.4.00.0040.04011.48
5.3.290.0040.04212.80
5.3.280.0040.04312.71
5.3.270.0060.05012.72
5.3.260.0060.04312.72
5.3.250.0090.03412.72
5.3.240.0090.03612.72
5.3.230.0080.04212.71
5.3.220.0060.05512.68
5.3.210.0080.03912.68
5.3.200.0070.04112.68
5.3.190.0040.04012.68
5.3.180.0040.03812.67
5.3.170.0130.03812.67
5.3.160.0080.04412.68
5.3.150.0080.03512.67
5.3.140.0050.03712.66
5.3.130.0050.04512.66
5.3.120.0080.05012.66
5.3.110.0130.04412.66
5.3.100.0070.03612.12
5.3.90.0100.03512.08
5.3.80.0080.03912.08
5.3.70.0060.03812.07
5.3.60.0040.04112.06
5.3.50.0050.03712.00
5.3.40.0070.03612.00
5.3.30.0080.03211.95
5.3.20.0090.04611.72
5.3.10.0080.05411.70
5.3.00.0130.06611.68
5.2.170.0090.0389.18
5.2.160.0050.0339.18
5.2.150.0090.0299.18
5.2.140.0070.0369.18
5.2.130.0030.0379.14
5.2.120.0040.0309.14
5.2.110.0050.0299.15
5.2.100.0060.0419.14
5.2.90.0070.0429.14
5.2.80.0080.0439.14
5.2.70.0120.0399.14
5.2.60.0060.0409.09
5.2.50.0070.0469.06
5.2.40.0060.0369.03
5.2.30.0050.0359.01
5.2.20.0050.0299.00
5.2.10.0050.0288.93
5.2.00.0050.0298.78
5.1.60.0120.0238.07
5.1.50.0060.0288.06
5.1.40.0040.0358.05
5.1.30.0050.0368.40
5.1.20.0020.0288.42
5.1.10.0060.0248.14
5.1.00.0040.0268.14
5.0.50.0010.0236.63
5.0.40.0030.0206.48
5.0.30.0040.0306.29
5.0.20.0030.0196.27
5.0.10.0030.0206.24
5.0.00.0030.0346.23
4.4.90.0040.0154.78
4.4.80.0040.0144.75
4.4.70.0040.0144.76
4.4.60.0020.0174.75
4.4.50.0020.0164.77
4.4.40.0020.0254.71
4.4.30.0030.0144.76
4.4.20.0020.0204.84
4.4.10.0000.0224.84
4.4.00.0030.0254.75
4.3.110.0020.0174.67
4.3.100.0050.0134.67
4.3.90.0020.0214.64
4.3.80.0040.0234.58
4.3.70.0040.0144.63
4.3.60.0020.0154.63
4.3.50.0020.0194.63
4.3.40.0040.0264.54
4.3.30.0020.0153.28
4.3.20.0020.0163.26
4.3.10.0020.0163.22
4.3.00.0200.01315.91

preferences:
138.99 ms | 1394 KiB | 7 Q