3v4l.org

run code in 300+ PHP versions simultaneously
<?php $prc_str = null; if(isset($prc_str) { echo "hello"; } else { echo "hi"; } ?>

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)
5.4.310.0050.03912.49
5.4.300.0080.03612.50
5.4.290.0040.04012.49
5.4.280.0050.03612.39
5.4.270.0050.03712.39
5.4.260.0070.03612.39
5.4.250.0110.03212.39
5.4.240.0100.03312.39
5.4.230.0130.03112.38
5.4.220.0060.03612.38
5.4.210.0090.03212.38
5.4.200.0060.03812.38
5.4.190.0060.03512.38
5.4.180.0070.04612.38
5.4.170.0060.03512.39
5.4.160.0050.03712.38
5.4.150.0100.03112.38
5.4.140.0070.03612.07
5.4.130.0060.03412.05
5.4.120.0060.03412.02
5.4.110.0080.03312.01
5.4.100.0050.03612.02
5.4.90.0070.03612.01
5.4.80.0030.03912.01
5.4.70.0050.03512.01
5.4.60.0090.03112.00
5.4.50.0030.03812.01
5.4.40.0100.04011.99
5.4.30.0060.03811.99
5.4.20.0040.04011.98
5.4.10.0050.03412.00
5.4.00.0080.03311.49
5.3.290.0070.03912.80
5.3.280.0080.04412.71
5.3.270.0090.04012.73
5.3.260.0060.04212.72
5.3.250.0110.04112.72
5.3.240.0080.04712.72
5.3.230.0080.05212.70
5.3.220.0080.03412.68
5.3.210.0070.04212.68
5.3.200.0060.03812.68
5.3.190.0070.04212.68
5.3.180.0100.03412.67
5.3.170.0130.04812.67
5.3.160.0100.04512.67
5.3.150.0100.05012.67
5.3.140.0140.08912.66
5.3.130.0130.04412.66
5.3.120.0060.05412.66
5.3.110.0090.04712.66
5.3.100.0100.04212.12
5.3.90.0090.03712.09
5.3.80.0090.03712.07
5.3.70.0060.03812.08
5.3.60.0070.03712.07
5.3.50.0060.03812.00
5.3.40.0070.03712.00
5.3.30.0070.03611.95
5.3.20.0080.03511.73
5.3.10.0060.03611.70
5.3.00.0080.03611.68
5.2.170.0050.0359.18
5.2.160.0050.0299.18
5.2.150.0070.0299.18
5.2.140.0070.0319.18
5.2.130.0050.0299.14
5.2.120.0070.0299.14
5.2.110.0030.0329.14
5.2.100.0070.0269.14
5.2.90.0060.0299.14
5.2.80.0080.0289.14
5.2.70.0060.0379.14
5.2.60.0020.0399.09
5.2.50.0060.0289.06
5.2.40.0060.0309.04
5.2.30.0030.0329.02
5.2.20.0030.0309.00
5.2.10.0030.0428.93
5.2.00.0070.0328.78
5.1.60.0050.0248.07
5.1.50.0020.0348.06
5.1.40.0040.0248.05
5.1.30.0050.0258.40
5.1.20.0010.0368.41
5.1.10.0040.0268.14
5.1.00.0030.0278.14
5.0.50.0040.0206.62
5.0.40.0040.0196.48
5.0.30.0030.0336.29
5.0.20.0040.0186.26
5.0.10.0060.0196.24
5.0.00.0060.0286.23
4.4.90.0030.0154.78
4.4.80.0030.0154.76
4.4.70.0030.0174.75
4.4.60.0060.0154.75
4.4.50.0080.0114.77
4.4.40.0030.0254.71
4.4.30.0020.0164.75
4.4.20.0010.0194.84
4.4.10.0050.0144.85
4.4.00.0040.0244.76
4.3.110.0060.0144.67
4.3.100.0030.0174.66
4.3.90.0030.0164.63
4.3.80.0020.0284.58
4.3.70.0040.0134.63
4.3.60.0020.0174.62
4.3.50.0050.0164.63
4.3.40.0050.0244.54
4.3.30.0050.0183.28
4.3.20.0020.0153.26
4.3.10.0020.0153.22
4.3.00.0000.01715.91

preferences:
142.59 ms | 1394 KiB | 7 Q