3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = '12345'; $c = ''; for($i = 0; $a[$i] != ''; $i++) $c = $b . $c; } var_dump($c);

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)
5.4.320.0090.03812.50
5.4.310.0020.04312.49
5.4.300.0060.03712.50
5.4.290.0060.03712.49
5.4.280.0060.04012.39
5.4.270.0060.05012.39
5.4.260.0120.04312.39
5.4.250.0050.04212.39
5.4.240.0060.05012.39
5.4.230.0110.05612.38
5.4.220.0100.05112.38
5.4.210.0050.04412.38
5.4.200.0040.04612.38
5.4.190.0020.04112.38
5.4.180.0060.03812.38
5.4.170.0090.03712.39
5.4.160.0050.04312.38
5.4.150.0050.04012.38
5.4.140.0050.03912.07
5.4.130.0090.04112.05
5.4.120.0070.03512.02
5.4.110.0030.03912.01
5.4.100.0070.03412.01
5.4.90.0030.04512.02
5.4.80.0060.03712.01
5.4.70.0040.03712.00
5.4.60.0070.03412.00
5.4.50.0090.03412.00
5.4.40.0060.03712.00
5.4.30.0060.03511.99
5.4.20.0050.03611.99
5.4.10.0050.03511.99
5.4.00.0040.03711.48
5.3.290.0080.03512.80
5.3.280.0070.03512.71
5.3.270.0070.04412.73
5.3.260.0110.03512.72
5.3.250.0040.03912.72
5.3.240.0050.04012.72
5.3.230.0060.03812.71
5.3.220.0010.04212.68
5.3.210.0050.04712.68
5.3.200.0070.03512.68
5.3.190.0060.03712.68
5.3.180.0070.03512.67
5.3.170.0030.03912.67
5.3.160.0040.04012.67
5.3.150.0070.03712.67
5.3.140.0100.04212.66
5.3.130.0100.04512.66
5.3.120.0100.03512.65
5.3.110.0090.03812.66
5.3.100.0090.03712.12
5.3.90.0090.04312.08
5.3.80.0070.03912.08
5.3.70.0070.04212.08
5.3.60.0050.03712.07
5.3.50.0040.03812.00
5.3.40.0080.04212.00
5.3.30.0070.03311.95
5.3.20.0070.03811.73
5.3.10.0050.03411.70
5.3.00.0060.03611.69
5.2.170.0050.0299.19
5.2.160.0090.0389.18
5.2.150.0050.0309.18
5.2.140.0060.0379.18
5.2.130.0040.0309.14
5.2.120.0050.0309.14
5.2.110.0030.0389.14
5.2.100.0050.0289.14
5.2.90.0040.0299.14
5.2.80.0080.0279.13
5.2.70.0030.0339.14
5.2.60.0040.0429.10
5.2.50.0060.0409.07
5.2.40.0050.0389.04
5.2.30.0080.0389.02
5.2.20.0060.0459.00
5.2.10.0070.0288.92
5.2.00.0060.0408.78
5.1.60.0070.0318.07
5.1.50.0070.0328.07
5.1.40.0050.0348.05
5.1.30.0060.0368.40
5.1.20.0060.0358.42
5.1.10.0070.0328.14
5.1.00.0050.0348.14
5.0.50.0030.0216.63
5.0.40.0040.0196.48
5.0.30.0030.0316.29
5.0.20.0030.0196.26
5.0.10.0030.0206.24
5.0.00.0070.0276.23
4.4.90.0050.0204.78
4.4.80.0020.0164.75
4.4.70.0040.0224.76
4.4.60.0020.0194.75
4.4.50.0040.0154.77
4.4.40.0030.0264.71
4.4.30.0050.0154.76
4.4.20.0030.0174.85
4.4.10.0050.0164.85
4.4.00.0060.0224.76
4.3.110.0020.0164.67
4.3.100.0010.0164.67
4.3.90.0000.0174.63
4.3.80.0030.0244.58
4.3.70.0020.0154.63
4.3.60.0050.0124.62
4.3.50.0020.0154.63
4.3.40.0000.0274.54
4.3.30.0010.0173.28
4.3.20.0030.0153.27
4.3.10.0040.0133.22
4.3.00.0000.0237.68

preferences:
144.09 ms | 1394 KiB | 7 Q