3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'tst'; $b = array ( &$a => 'value' ); $a = 'bnb'; echo $b['tst']; ?>

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)
5.4.320.0070.04512.49
5.4.310.0080.04912.49
5.4.300.0090.03812.50
5.4.290.0050.03812.49
5.4.280.0070.03412.39
5.4.270.0040.03712.39
5.4.260.0080.03412.39
5.4.250.0060.03912.39
5.4.240.0030.03912.39
5.4.230.0060.03612.38
5.4.220.0030.03912.38
5.4.210.0100.03112.38
5.4.200.0050.03812.38
5.4.190.0040.03812.38
5.4.180.0050.03712.38
5.4.170.0030.03912.38
5.4.160.0040.04412.38
5.4.150.0120.04012.38
5.4.140.0060.03912.07
5.4.130.0040.03812.05
5.4.120.0040.04212.02
5.4.110.0060.03612.01
5.4.100.0070.03512.01
5.4.90.0060.03612.01
5.4.80.0050.03812.01
5.4.70.0040.03812.01
5.4.60.0090.03912.00
5.4.50.0070.04012.00
5.4.40.0070.03812.00
5.4.30.0050.03812.00
5.4.20.0110.03911.99
5.4.10.0050.04711.99
5.4.00.0050.03611.48
5.3.290.0090.03612.80
5.3.280.0060.03912.71
5.3.270.0050.04012.72
5.3.260.0070.03912.71
5.3.250.0070.03612.72
5.3.240.0070.03612.72
5.3.230.0090.03512.71
5.3.220.0090.03512.68
5.3.210.0030.04112.68
5.3.200.0040.03712.68
5.3.190.0060.04712.68
5.3.180.0060.04112.67
5.3.170.0100.04212.67
5.3.160.0080.04112.68
5.3.150.0060.03812.67
5.3.140.0060.03612.66
5.3.130.0060.03912.66
5.3.120.0060.03912.66
5.3.110.0050.04112.66
5.3.100.0060.03712.12
5.3.90.0110.04012.08
5.3.80.0070.05212.08
5.3.70.0050.03812.07
5.3.60.0050.03812.06
5.3.50.0090.03212.01
5.3.40.0050.04112.00
5.3.30.0050.04111.95
5.3.20.0070.04411.73
5.3.10.0060.04811.70
5.3.00.0040.03711.68
5.2.170.0030.0329.18
5.2.160.0080.0349.18
5.2.150.0040.0419.18
5.2.140.0050.0469.18
5.2.130.0040.0329.14
5.2.120.0040.0289.14
5.2.110.0030.0299.14
5.2.100.0060.0389.14
5.2.90.0030.0379.14
5.2.80.0080.0299.14
5.2.70.0000.0409.14
5.2.60.0010.0349.09
5.2.50.0080.0349.06
5.2.40.0060.0269.04
5.2.30.0070.0269.02
5.2.20.0060.0299.01
5.2.10.0040.0288.93
5.2.00.0040.0298.78
5.1.60.0030.0248.07
5.1.50.0060.0228.06
5.1.40.0040.0278.05
5.1.30.0050.0358.40
5.1.20.0050.0268.41
5.1.10.0020.0278.14
5.1.00.0030.0268.14
5.0.50.0040.0236.62
5.0.40.0030.0266.48
5.0.30.0030.0316.29
5.0.20.0030.0196.26
5.0.10.0030.0196.24
5.0.00.0040.0296.23
4.4.90.0080.0174.78
4.4.80.0040.0194.75
4.4.70.0030.0204.76
4.4.60.0030.0154.75
4.4.50.0020.0164.77
4.4.40.0040.0264.71
4.4.30.0040.0144.76
4.4.20.0040.0144.84
4.4.10.0040.0144.85
4.4.00.0040.0264.76
4.3.110.0010.0174.67
4.3.100.0010.0164.66
4.3.90.0040.0134.63
4.3.80.0040.0264.59
4.3.70.0030.0134.63
4.3.60.0030.0144.63
4.3.50.0020.0164.63
4.3.40.0020.0304.54
4.3.30.0020.0173.29
4.3.20.0040.0143.26
4.3.10.0030.0143.22
4.3.00.0000.02018.41

preferences:
149.96 ms | 1394 KiB | 7 Q