3v4l.org

run code in 300+ PHP versions simultaneously
<?php function isCorrect($string) { for(var i = 0; i < strlen($string); i++) { $string; } } $string = '({{}})'; var_dump(substr($string, 0, strlen($string)\2)); //assert(isCorrect('') === true); //assert(isCorrect('()') === true); //assert(isCorrect('{()}') === true); //assert(isCorrect('{()}{}') === true); //assert(isCorrect('(())') === true); //assert(isCorrect('{({({({()})})})}') === true); //assert(isCorrect('{(})') === false);

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)
5.4.340.0050.03712.03
5.4.320.0060.04512.52
5.4.310.0090.04612.52
5.4.300.0120.04512.52
5.4.290.0100.03412.51
5.4.280.0050.03712.41
5.4.270.0070.03512.41
5.4.260.0050.03812.41
5.4.250.0060.03812.41
5.4.240.0080.03312.41
5.4.230.0020.04112.40
5.4.220.0070.03612.40
5.4.210.0070.05712.40
5.4.200.0060.04212.40
5.4.190.0070.03512.39
5.4.180.0050.04312.40
5.4.170.0040.03812.41
5.4.160.0040.03712.40
5.4.150.0040.03712.39
5.4.140.0050.03812.09
5.4.130.0070.03512.07
5.4.120.0080.03612.04
5.4.110.0090.04012.03
5.4.100.0060.04812.03
5.4.90.0070.03612.03
5.4.80.0050.03712.04
5.4.70.0050.04012.02
5.4.60.0080.03812.02
5.4.50.0060.03512.02
5.4.40.0050.03812.02
5.4.30.0030.03912.01
5.4.20.0050.04512.01
5.4.10.0060.03712.00
5.4.00.0040.03811.50
5.3.290.0070.04112.80
5.3.280.0070.04012.71
5.3.270.0070.04512.73
5.3.260.0080.04312.72
5.3.250.0060.03812.72
5.3.240.0060.03712.72
5.3.230.0060.03812.71
5.3.220.0090.03412.68
5.3.210.0090.03912.68
5.3.200.0090.03912.68
5.3.190.0090.03912.68
5.3.180.0090.03912.67
5.3.170.0080.04012.67
5.3.160.0070.03512.67
5.3.150.0040.03912.68
5.3.140.0030.03912.66
5.3.130.0080.04212.66
5.3.120.0080.04012.65
5.3.110.0060.03812.66
5.3.100.0100.03812.13
5.3.90.0050.04112.11
5.3.80.0110.03212.09
5.3.70.0080.03312.09
5.3.60.0070.03612.08
5.3.50.0100.03112.02
5.3.40.0090.03712.02
5.3.30.0070.03911.98
5.3.20.0070.03711.77
5.3.10.0070.03311.73
5.3.00.0030.03911.71
5.2.170.0060.0319.21
5.2.160.0040.0319.22
5.2.150.0020.0329.21
5.2.140.0050.0309.22
5.2.130.0010.0329.18
5.2.120.0090.0309.17
5.2.110.0030.0319.18
5.2.100.0050.0349.18
5.2.90.0040.0319.18
5.2.80.0090.0319.17
5.2.70.0050.0349.17
5.2.60.0030.0309.12
5.2.50.0070.0409.09
5.2.40.0030.0329.07
5.2.30.0080.0269.05
5.2.20.0060.0309.04
5.2.10.0030.0298.95
5.2.00.0050.0338.81
5.1.60.0040.0258.09
5.1.50.0070.0378.09
5.1.40.0050.0298.07
5.1.30.0060.0308.43
5.1.20.0080.0318.44
5.1.10.0060.0268.16
5.1.00.0030.0268.16
5.0.50.0040.0196.64
5.0.40.0030.0196.49
5.0.30.0030.0316.31
5.0.20.0020.0206.28
5.0.10.0030.0206.25
5.0.00.0030.0326.25
4.4.90.0040.0154.78
4.4.80.0030.0154.76
4.4.70.0030.0154.76
4.4.60.0030.0154.75
4.4.50.0060.0144.77
4.4.40.0030.0284.71
4.4.30.0030.0184.75
4.4.20.0040.0174.84
4.4.10.0040.0174.85
4.4.00.0010.0294.76
4.3.110.0020.0164.67
4.3.100.0010.0174.67
4.3.90.0060.0114.64
4.3.80.0030.0244.58
4.3.70.0030.0144.63
4.3.60.0040.0134.63
4.3.50.0040.0144.63
4.3.40.0010.0264.54
4.3.30.0020.0163.30
4.3.20.0010.0173.29
4.3.10.0020.0153.24
4.3.00.0070.0236.63

preferences:
142.18 ms | 1394 KiB | 7 Q