3v4l.org

run code in 300+ PHP versions simultaneously
<?php function isCorrect($string) { for( $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)
5.4.340.0040.03712.03
5.4.320.0030.04212.52
5.4.310.0080.04312.52
5.4.300.0060.03712.52
5.4.290.0060.04012.52
5.4.280.0070.03612.41
5.4.270.0050.03912.41
5.4.260.0110.03912.41
5.4.250.0060.04012.41
5.4.240.0080.03412.41
5.4.230.0130.04312.40
5.4.220.0050.03812.41
5.4.210.0080.03412.40
5.4.200.0110.03612.41
5.4.190.0110.03512.40
5.4.180.0050.04312.40
5.4.170.0070.03912.41
5.4.160.0090.03512.40
5.4.150.0090.03312.39
5.4.140.0070.04812.09
5.4.130.0120.04412.07
5.4.120.0120.04312.03
5.4.110.0070.03612.03
5.4.100.0060.03512.03
5.4.90.0060.03712.03
5.4.80.0070.03612.03
5.4.70.0050.03712.02
5.4.60.0080.04012.02
5.4.50.0100.03112.02
5.4.40.0090.03812.02
5.4.30.0060.03512.01
5.4.20.0050.03712.01
5.4.10.0080.03612.02
5.4.00.0060.04011.50
5.3.290.0050.04012.80
5.3.280.0050.03912.71
5.3.270.0090.03912.72
5.3.260.0110.03712.72
5.3.250.0120.03412.72
5.3.240.0050.03912.72
5.3.230.0050.03912.71
5.3.220.0030.04212.68
5.3.210.0040.04112.68
5.3.200.0050.04112.68
5.3.190.0090.04112.68
5.3.180.0050.03912.67
5.3.170.0090.03812.67
5.3.160.0050.04212.67
5.3.150.0090.04012.68
5.3.140.0080.04212.66
5.3.130.0090.03612.66
5.3.120.0070.04712.66
5.3.110.0060.04612.66
5.3.100.0060.03712.12
5.3.90.0100.03312.10
5.3.80.0050.03812.09
5.3.70.0030.03912.09
5.3.60.0020.03912.08
5.3.50.0080.03412.02
5.3.40.0110.03912.02
5.3.30.0110.03311.98
5.3.20.0070.03611.76
5.3.10.0080.03211.73
5.3.00.0080.03911.72
5.2.170.0100.0279.21
5.2.160.0050.0299.22
5.2.150.0030.0329.22
5.2.140.0060.0299.21
5.2.130.0070.0309.18
5.2.120.0070.0269.17
5.2.110.0040.0299.18
5.2.100.0030.0299.18
5.2.90.0030.0309.18
5.2.80.0050.0309.17
5.2.70.0020.0329.17
5.2.60.0050.0309.13
5.2.50.0040.0309.09
5.2.40.0040.0299.07
5.2.30.0050.0299.05
5.2.20.0060.0279.04
5.2.10.0070.0278.94
5.2.00.0050.0288.81
5.1.60.0060.0288.09
5.1.50.0040.0248.09
5.1.40.0040.0308.07
5.1.30.0060.0248.41
5.1.20.0070.0348.44
5.1.10.0050.0258.17
5.1.00.0060.0258.16
5.0.50.0030.0206.64
5.0.40.0030.0196.51
5.0.30.0020.0326.31
5.0.20.0030.0196.28
5.0.10.0050.0186.26
5.0.00.0040.0306.25
4.4.90.0030.0154.78
4.4.80.0030.0164.76
4.4.70.0040.0144.76
4.4.60.0040.0144.75
4.4.50.0060.0124.77
4.4.40.0020.0254.71
4.4.30.0030.0184.76
4.4.20.0010.0174.84
4.4.10.0020.0164.85
4.4.00.0020.0264.76
4.3.110.0020.0164.67
4.3.100.0030.0144.67
4.3.90.0010.0164.63
4.3.80.0040.0234.59
4.3.70.0030.0194.63
4.3.60.0060.0134.63
4.3.50.0040.0134.63
4.3.40.0030.0234.54
4.3.30.0030.0143.30
4.3.20.0010.0163.27
4.3.10.0020.0153.24
4.3.00.0070.0276.63

preferences:
141.17 ms | 1394 KiB | 7 Q