3v4l.org

run code in 300+ PHP versions simultaneously
<?php $blah = array('a' => ''); echo isset($blah('a') +1;

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)
5.4.320.0100.03212.47
5.4.310.0070.03612.46
5.4.300.0080.03412.47
5.4.290.0040.03912.46
5.4.280.0050.03512.36
5.4.270.0060.03612.36
5.4.260.0020.04412.36
5.4.250.0050.04712.36
5.4.240.0050.04612.36
5.4.230.0080.03512.35
5.4.220.0060.03512.35
5.4.210.0080.03312.35
5.4.200.0040.03912.35
5.4.190.0040.03812.35
5.4.180.0040.03712.34
5.4.170.0080.04412.36
5.4.160.0080.03312.36
5.4.150.0080.03212.35
5.4.140.0030.03812.04
5.4.130.0020.03812.02
5.4.120.0070.03311.98
5.4.110.0050.03411.97
5.4.100.0030.03611.98
5.4.90.0060.04211.97
5.4.80.0070.03711.98
5.4.70.0070.04011.97
5.4.60.0050.03511.97
5.4.50.0060.03411.97
5.4.40.0050.03611.96
5.4.30.0040.03711.96
5.4.20.0050.03611.96
5.4.10.0060.03511.96
5.4.00.0060.03611.45
5.3.290.0070.03812.80
5.3.280.0030.03912.71
5.3.270.0070.03812.73
5.3.260.0050.04012.72
5.3.250.0070.03612.72
5.3.240.0060.03612.72
5.3.230.0050.04212.71
5.3.220.0070.03512.68
5.3.210.0040.04012.68
5.3.200.0030.03812.68
5.3.190.0040.03912.68
5.3.180.0060.03612.67
5.3.170.0060.03612.67
5.3.160.0050.03912.67
5.3.150.0060.04212.68
5.3.140.0040.03912.66
5.3.130.0050.04012.65
5.3.120.0060.03912.66
5.3.110.0070.03712.66
5.3.100.0060.03612.12
5.3.90.0050.03612.09
5.3.80.0050.03612.07
5.3.70.0100.03312.08
5.3.60.0120.03612.06
5.3.50.0090.03412.00
5.3.40.0060.04012.00
5.3.30.0050.03811.95
5.3.20.0050.03811.72
5.3.10.0040.04111.69
5.3.00.0060.04611.68
5.2.170.0030.0329.18
5.2.160.0060.0339.18
5.2.150.0070.0299.18
5.2.140.0030.0339.17
5.2.130.0100.0299.13
5.2.120.0100.0239.13
5.2.110.0110.0279.14
5.2.100.0040.0289.14
5.2.90.0060.0279.14
5.2.80.0030.0319.14
5.2.70.0060.0329.13
5.2.60.0030.0319.09
5.2.50.0080.0309.06
5.2.40.0080.0279.04
5.2.30.0040.0309.01
5.2.20.0030.0369.00
5.2.10.0040.0298.92
5.2.00.0060.0278.78
5.1.60.0050.0238.06
5.1.50.0050.0238.06
5.1.40.0030.0268.05
5.1.30.0010.0298.40
5.1.20.0040.0278.41
5.1.10.0000.0318.13
5.1.00.0040.0288.14
5.0.50.0010.0246.61
5.0.40.0050.0186.47
5.0.30.0010.0336.29
5.0.20.0030.0206.26
5.0.10.0010.0226.23
5.0.00.0020.0326.23
4.4.90.0000.0184.78
4.4.80.0020.0154.75
4.4.70.0040.0144.75
4.4.60.0010.0174.75
4.4.50.0010.0174.77
4.4.40.0030.0254.71
4.4.30.0040.0144.76
4.4.20.0020.0164.85
4.4.10.0020.0164.85
4.4.00.0060.0274.76
4.3.110.0010.0224.67
4.3.100.0030.0214.66
4.3.90.0030.0194.64
4.3.80.0040.0304.58
4.3.70.0030.0204.63
4.3.60.0090.0154.63
4.3.50.0060.0174.63
4.3.40.0030.0284.54
4.3.30.0010.0193.29
4.3.20.0030.0193.27
4.3.10.0020.0223.21
4.3.00.0000.0237.15

preferences:
138.89 ms | 1394 KiB | 7 Q