3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo substr('abcdefgh', -4, -2)

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)
5.4.320.0090.03812.47
5.4.310.0060.03812.46
5.4.300.0090.05112.46
5.4.290.0090.04312.46
5.4.280.0070.03512.36
5.4.270.0040.03812.36
5.4.260.0080.04212.36
5.4.250.0070.04212.36
5.4.240.0070.04412.36
5.4.230.0070.04312.35
5.4.220.0090.04212.36
5.4.210.0060.03412.35
5.4.200.0040.03812.35
5.4.190.0040.03712.35
5.4.180.0080.03312.35
5.4.170.0060.03612.36
5.4.160.0040.03712.36
5.4.150.0070.03512.34
5.4.140.0050.04512.04
5.4.130.0080.03712.02
5.4.120.0070.03711.99
5.4.110.0060.03911.98
5.4.100.0060.04511.98
5.4.90.0060.03711.98
5.4.80.0070.03511.99
5.4.70.0060.03911.98
5.4.60.0060.03611.98
5.4.50.0090.03211.98
5.4.40.0030.03711.96
5.4.30.0120.03211.96
5.4.20.0080.03611.96
5.4.10.0060.04411.96
5.4.00.0050.03711.46
5.3.290.0050.04812.80
5.3.280.0050.04712.71
5.3.270.0100.04012.73
5.3.260.0070.03812.71
5.3.250.0090.03712.72
5.3.240.0090.03512.71
5.3.230.0050.04112.71
5.3.220.0100.03612.68
5.3.210.0080.04512.68
5.3.200.0120.04412.68
5.3.190.0080.03812.67
5.3.180.0110.03412.67
5.3.170.0040.04412.67
5.3.160.0090.03312.67
5.3.150.0070.03712.68
5.3.140.0060.04612.66
5.3.130.0050.04012.66
5.3.120.0050.03912.66
5.3.110.0110.03912.66
5.3.100.0050.03812.12
5.3.90.0090.04012.08
5.3.80.0060.03912.07
5.3.70.0080.04912.08
5.3.60.0110.03412.06
5.3.50.0050.04412.00
5.3.40.0080.03912.00
5.3.30.0090.03611.95
5.3.20.0060.03811.72
5.3.10.0070.03911.70
5.3.00.0100.03511.68
5.2.170.0050.0389.18
5.2.160.0080.0359.18
5.2.150.0070.0329.18
5.2.140.0070.0279.18
5.2.130.0040.0299.14
5.2.120.0050.0349.14
5.2.110.0070.0389.15
5.2.100.0080.0269.14
5.2.90.0040.0349.14
5.2.80.0060.0289.14
5.2.70.0050.0319.14
5.2.60.0010.0349.09
5.2.50.0030.0309.06
5.2.40.0070.0289.04
5.2.30.0050.0319.02
5.2.20.0060.0329.00
5.2.10.0060.0308.92
5.2.00.0050.0298.78
5.1.60.0060.0228.07
5.1.50.0050.0238.07
5.1.40.0040.0248.04
5.1.30.0040.0268.40
5.1.20.0050.0318.42
5.1.10.0070.0238.14
5.1.00.0030.0308.14
5.0.50.0070.0226.62
5.0.40.0040.0276.48
5.0.30.0050.0386.29
5.0.20.0050.0206.27
5.0.10.0050.0256.24
5.0.00.0040.0376.23
4.4.90.0050.0224.78
4.4.80.0060.0174.75
4.4.70.0060.0174.76
4.4.60.0040.0164.76
4.4.50.0050.0224.77
4.4.40.0050.0284.71
4.4.30.0040.0194.76
4.4.20.0030.0184.84
4.4.10.0030.0244.85
4.4.00.0040.0294.76
4.3.110.0060.0154.67
4.3.100.0060.0204.66
4.3.90.0030.0174.63
4.3.80.0030.0244.58
4.3.70.0010.0174.63
4.3.60.0030.0144.63
4.3.50.0040.0144.63
4.3.40.0020.0244.54
4.3.30.0010.0193.29
4.3.20.0010.0263.27
4.3.10.0020.0203.21
4.3.00.0000.0237.43

preferences:
142.91 ms | 1394 KiB | 7 Q