3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('a', 'b', 'c'); $r = &$a; print_r($a); print_r($r;

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)
5.4.340.0100.04612.01
5.4.320.0050.04812.50
5.4.310.0100.05112.50
5.4.300.0100.04712.50
5.4.290.0110.04612.49
5.4.280.0090.04912.39
5.4.270.0200.08212.39
5.4.260.0120.04512.39
5.4.250.0070.04812.39
5.4.240.0060.04312.39
5.4.230.0120.05812.38
5.4.220.0080.04912.38
5.4.210.0080.04012.38
5.4.200.0110.04112.38
5.4.190.0050.05112.38
5.4.180.0050.05312.38
5.4.170.0080.05012.38
5.4.160.0120.04212.38
5.4.150.0060.04912.38
5.4.140.0060.05212.07
5.4.130.0090.04612.05
5.4.120.0070.04112.02
5.4.110.0110.04712.01
5.4.100.0100.04612.01
5.4.90.0080.04812.02
5.4.80.0050.04112.01
5.4.70.0090.03412.01
5.4.60.0080.03912.01
5.4.50.0060.04212.01
5.4.40.0080.04212.00
5.4.30.0080.04511.99
5.4.20.0050.04311.99
5.4.10.0060.03911.99
5.4.00.0090.03611.48
5.3.290.0060.04112.80
5.3.280.0080.04312.71
5.3.270.0110.03712.72
5.3.260.0090.04812.72
5.3.250.0080.05612.72
5.3.240.0140.04312.72
5.3.230.0050.04312.71
5.3.220.0040.04312.68
5.3.210.0090.04412.68
5.3.200.0100.04312.68
5.3.190.0100.04612.68
5.3.180.0060.03812.67
5.3.170.0090.04412.67
5.3.160.0120.04012.67
5.3.150.0070.04112.67
5.3.140.0100.03712.66
5.3.130.0100.04912.66
5.3.120.0140.04512.66
5.3.110.0110.05512.66
5.3.100.0080.04712.12
5.3.90.0090.04512.09
5.3.80.0050.04512.07
5.3.70.0070.04512.08
5.3.60.0100.04212.07
5.3.50.0080.04012.00
5.3.40.0080.04512.00
5.3.30.0120.04411.95
5.3.20.0110.04311.73
5.3.10.0080.03611.70
5.3.00.0050.04311.69
5.2.170.0030.0369.18
5.2.160.0080.0479.18
5.2.150.0110.0319.18
5.2.140.0050.0339.18
5.2.130.0080.0369.14
5.2.120.0090.0299.13
5.2.110.0030.0339.15
5.2.100.0080.0389.14
5.2.90.0050.0339.14
5.2.80.0050.0349.14
5.2.70.0060.0319.14
5.2.60.0070.0369.09
5.2.50.0050.0409.06
5.2.40.0070.0359.04
5.2.30.0070.0389.01
5.2.20.0070.0369.00
5.2.10.0090.0358.93
5.2.00.0070.0388.78
5.1.60.0030.0368.07
5.1.50.0050.0338.06
5.1.40.0070.0358.04
5.1.30.0070.0358.40
5.1.20.0090.0368.42
5.1.10.0070.0428.14
5.1.00.0070.0388.14
5.0.50.0070.0306.62
5.0.40.0050.0276.48
5.0.30.0050.0406.29
5.0.20.0070.0226.27
5.0.10.0050.0266.24
5.0.00.0060.0396.23
4.4.90.0060.0224.78
4.4.80.0050.0224.76
4.4.70.0070.0174.75
4.4.60.0030.0214.75
4.4.50.0040.0214.77
4.4.40.0050.0304.71
4.4.30.0050.0304.76
4.4.20.0030.0184.84
4.4.10.0110.0204.84
4.4.00.0040.0344.76
4.3.110.0050.0214.67
4.3.100.0040.0214.66
4.3.90.0080.0294.64
4.3.80.0040.0374.58
4.3.70.0020.0224.63
4.3.60.0040.0204.63
4.3.50.0080.0194.62
4.3.40.0030.0324.53
4.3.30.0040.0253.29
4.3.20.0050.0203.26
4.3.10.0020.0223.22
4.3.00.0130.0237.01

preferences:
144.23 ms | 1394 KiB | 7 Q