3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (!isset($hello)) { echo "not set" }

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)
5.4.320.0190.07712.49
5.4.310.0100.04012.49
5.4.300.0070.03912.50
5.4.290.0030.04412.49
5.4.280.0100.03712.39
5.4.270.0100.03712.39
5.4.260.0080.04812.39
5.4.250.0030.04312.39
5.4.240.0060.03712.39
5.4.230.0040.04012.38
5.4.220.0050.03712.38
5.4.210.0040.03912.38
5.4.200.0070.03812.38
5.4.190.0050.03712.38
5.4.180.0070.03712.38
5.4.170.0090.03412.38
5.4.160.0040.03712.38
5.4.150.0010.04112.38
5.4.140.0070.04212.07
5.4.130.0050.03912.05
5.4.120.0030.04712.01
5.4.110.0070.05312.01
5.4.100.0080.05012.01
5.4.90.0060.04312.01
5.4.80.0050.04812.01
5.4.70.0050.04212.00
5.4.60.0040.03812.00
5.4.50.0050.03612.00
5.4.40.0060.03412.00
5.4.30.0050.03612.00
5.4.20.0110.03111.99
5.4.10.0090.04411.99
5.4.00.0060.03811.49
5.3.290.0090.04412.80
5.3.280.0080.03712.71
5.3.270.0120.03712.72
5.3.260.0050.04412.72
5.3.250.0040.04012.72
5.3.240.0080.03612.72
5.3.230.0050.03912.71
5.3.220.0050.03812.68
5.3.210.0050.04212.68
5.3.200.0090.03712.68
5.3.190.0050.03912.68
5.3.180.0040.03912.67
5.3.170.0040.04412.66
5.3.160.0030.04512.68
5.3.150.0040.04012.68
5.3.140.0080.03612.66
5.3.130.0050.04012.66
5.3.120.0050.03912.66
5.3.110.0060.03812.66
5.3.100.0050.03712.12
5.3.90.0040.04512.08
5.3.80.0030.04112.08
5.3.70.0030.03912.08
5.3.60.0060.03912.06
5.3.50.0060.03512.00
5.3.40.0070.04012.00
5.3.30.0080.03711.95
5.3.20.0060.03511.73
5.3.10.0060.03411.70
5.3.00.0060.03611.69
5.2.170.0040.0319.18
5.2.160.0030.0449.18
5.2.150.0040.0329.18
5.2.140.0040.0319.18
5.2.130.0040.0299.14
5.2.120.0030.0309.13
5.2.110.0060.0289.15
5.2.100.0030.0309.14
5.2.90.0040.0339.14
5.2.80.0060.0339.14
5.2.70.0040.0329.14
5.2.60.0060.0319.09
5.2.50.0040.0309.06
5.2.40.0060.0279.04
5.2.30.0040.0339.01
5.2.20.0030.0309.01
5.2.10.0050.0288.93
5.2.00.0000.0338.78
5.1.60.0040.0238.07
5.1.50.0040.0248.07
5.1.40.0050.0248.05
5.1.30.0050.0258.40
5.1.20.0040.0278.41
5.1.10.0040.0288.14
5.1.00.0020.0278.14
5.0.50.0030.0216.62
5.0.40.0070.0166.48
5.0.30.0030.0326.29
5.0.20.0010.0216.26
5.0.10.0040.0196.24
5.0.00.0050.0296.23
4.4.90.0050.0144.78
4.4.80.0020.0154.76
4.4.70.0030.0154.76
4.4.60.0040.0144.75
4.4.50.0020.0164.77
4.4.40.0030.0254.71
4.4.30.0030.0164.76
4.4.20.0040.0154.84
4.4.10.0040.0144.85
4.4.00.0010.0274.76
4.3.110.0020.0204.67
4.3.100.0010.0174.67
4.3.90.0030.0144.63
4.3.80.0010.0264.59
4.3.70.0020.0154.63
4.3.60.0010.0164.62
4.3.50.0040.0154.62
4.3.40.0030.0324.54
4.3.30.0030.0213.29
4.3.20.0030.0183.27
4.3.10.0010.0173.21
4.3.00.0130.0237.15

preferences:
140.96 ms | 1386 KiB | 7 Q