3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 5 $string = 'SAFDSADSADsddasdsDASSADDsads'; $str = strtowlower($string); $str;

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)
5.4.340.0030.03712.01
5.4.320.0080.04012.49
5.4.310.0110.04012.49
5.4.300.0080.03612.49
5.4.290.0080.03812.49
5.4.280.0080.03612.39
5.4.270.0130.03912.39
5.4.260.0060.04512.39
5.4.250.0080.03512.39
5.4.240.0050.04012.39
5.4.230.0130.03312.38
5.4.220.0060.03712.38
5.4.210.0100.03212.38
5.4.200.0090.03812.38
5.4.190.0070.04012.38
5.4.180.0060.03612.38
5.4.170.0080.03812.38
5.4.160.0070.03612.38
5.4.150.0040.03712.38
5.4.140.0080.03412.07
5.4.130.0090.03412.05
5.4.120.0060.03712.01
5.4.110.0050.03712.01
5.4.100.0030.04212.01
5.4.90.0090.03612.01
5.4.80.0040.03912.01
5.4.70.0070.03312.00
5.4.60.0090.03712.00
5.4.50.0060.04412.01
5.4.40.0030.03812.00
5.4.30.0050.03711.99
5.4.20.0060.03811.99
5.4.10.0070.03711.99
5.4.00.0040.03711.48
5.3.290.0090.04212.80
5.3.280.0060.03712.71
5.3.270.0050.04012.72
5.3.260.0080.03712.72
5.3.250.0050.03812.72
5.3.240.0090.03712.71
5.3.230.0140.04512.71
5.3.220.0060.04912.68
5.3.210.0060.04012.68
5.3.200.0030.04012.68
5.3.190.0070.03712.68
5.3.180.0120.03512.68
5.3.170.0110.04012.67
5.3.160.0050.03712.67
5.3.150.0080.03612.67
5.3.140.0090.03912.66
5.3.130.0050.04712.66
5.3.120.0060.04412.66
5.3.110.0040.04112.65
5.3.100.0050.04112.12
5.3.90.0080.04312.09
5.3.80.0070.04212.07
5.3.70.0050.03812.08
5.3.60.0100.03612.06
5.3.50.0080.03612.00
5.3.40.0140.03612.00
5.3.30.0110.03311.95
5.3.20.0120.03211.72
5.3.10.0060.04011.70
5.3.00.0100.03811.68
5.2.170.0050.0319.18
5.2.160.0070.0289.18
5.2.150.0030.0329.18
5.2.140.0070.0299.18
5.2.130.0080.0379.14
5.2.120.0020.0309.14
5.2.110.0060.0289.15
5.2.100.0040.0299.14
5.2.90.0030.0359.14
5.2.80.0060.0299.13
5.2.70.0030.0319.13
5.2.60.0060.0299.09
5.2.50.0070.0289.06
5.2.40.0080.0289.03
5.2.30.0060.0299.02
5.2.20.0050.0289.00
5.2.10.0080.0278.93
5.2.00.0030.0318.79
5.1.60.0060.0238.07
5.1.50.0050.0258.07
5.1.40.0070.0228.04
5.1.30.0050.0278.40
5.1.20.0050.0278.41
5.1.10.0030.0278.14
5.1.00.0040.0268.14
5.0.50.0040.0206.62
5.0.40.0050.0186.48
5.0.30.0050.0306.29
5.0.20.0070.0166.26
5.0.10.0060.0186.24
5.0.00.0060.0296.23
4.4.90.0020.0164.78
4.4.80.0030.0154.75
4.4.70.0040.0154.76
4.4.60.0040.0164.75
4.4.50.0020.0174.77
4.4.40.0030.0284.71
4.4.30.0050.0174.76
4.4.20.0040.0174.84
4.4.10.0080.0224.85
4.4.00.0070.0294.76
4.3.110.0030.0274.67
4.3.100.0020.0154.66
4.3.90.0020.0154.63
4.3.80.0000.0284.58
4.3.70.0040.0134.63
4.3.60.0050.0134.63
4.3.50.0060.0144.63
4.3.40.0010.0284.54
4.3.30.0030.0163.29
4.3.20.0020.0173.26
4.3.10.0040.0143.21
4.3.00.0100.0207.00

preferences:
140.5 ms | 1394 KiB | 7 Q