3v4l.org

run code in 300+ PHP versions simultaneously
<?php function isCorrect($string) { $len = strlen($string); $stack = []; for( $i = 0; $i < $len; ++$i) { if ($string[$i] == '(') array_push($stack, $string[i]); else if($string[$i] == ')') { if ( empty($stack) === false) array_pop($stack); else return false; } } return empty($stack); } $string = '((()))'; isCorrect($string); //var_dump(isCorrect($string)); //var_dump(strlen($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)
8.3.60.0110.00718.53
8.3.50.0150.00721.28
8.3.40.0130.00718.74
8.3.30.0140.00019.14
8.3.20.0070.00020.20
8.3.10.0000.00823.36
8.3.00.0040.00419.38
8.2.180.0040.01218.50
8.2.170.0110.00322.96
8.2.160.0100.00720.48
8.2.150.0040.00424.18
8.2.140.0030.00524.66
8.2.130.0000.00726.16
8.2.120.0000.00821.86
8.2.110.0030.00622.07
8.2.100.0040.00817.88
8.2.90.0040.00419.40
8.2.80.0030.00517.97
8.2.70.0040.00417.88
8.2.60.0000.00718.16
8.2.50.0000.00918.07
8.2.40.0000.01020.07
8.2.30.0060.00618.01
8.2.20.0040.00417.72
8.2.10.0090.00018.18
8.2.00.0040.00417.79
8.1.280.0180.00425.92
8.1.270.0060.00323.84
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0060.00323.97
8.1.230.0090.00317.48
8.1.220.0080.00017.76
8.1.210.0000.00918.77
8.1.200.0030.00617.21
8.1.190.0040.00417.13
8.1.180.0080.00018.10
8.1.170.0030.00618.66
8.1.160.0000.00722.05
8.1.150.0050.00318.88
8.1.140.0000.00717.36
8.1.130.0030.00317.88
8.1.120.0040.00417.50
8.1.110.0000.00817.34
8.1.100.0050.00317.35
8.1.90.0000.00817.35
8.1.80.0000.00717.51
8.1.70.0030.00317.40
8.1.60.0060.00317.60
8.1.50.0060.00317.49
8.1.40.0040.00417.55
8.1.30.0040.00417.58
8.1.20.0030.00517.68
8.1.10.0030.00517.55
8.1.00.0000.00817.38
8.0.300.0070.00418.77
8.0.290.0040.00416.75
8.0.280.0030.00318.35
8.0.270.0000.00717.33
8.0.260.0000.00817.27
8.0.250.0070.00016.98
8.0.240.0000.00716.92
8.0.230.0040.00717.00
8.0.220.0070.00016.97
8.0.210.0070.00016.88
8.0.200.0000.00717.05
8.0.190.0000.00717.05
8.0.180.0000.00816.91
8.0.170.0050.00316.95
8.0.160.0000.00716.89
8.0.150.0070.00016.91
8.0.140.0050.00216.93
8.0.130.0050.00013.35
8.0.120.0060.00316.93
8.0.110.0000.00816.96
8.0.100.0030.00516.86
8.0.90.0040.00416.82
8.0.80.0120.00317.01
8.0.70.0030.00516.87
8.0.60.0050.00316.95
8.0.50.0050.00317.02
8.0.30.0100.00916.92
8.0.20.0100.01417.40
8.0.10.0040.00417.12
8.0.00.0110.00816.66
7.4.330.0050.00015.02
7.4.320.0070.00016.66
7.4.300.0030.00316.63
7.4.290.0030.00316.43
7.4.280.0050.00516.49
7.4.270.0070.00016.45
7.4.260.0030.00516.44
7.4.250.0040.00416.59
7.4.240.0060.00216.54
7.4.230.0000.00716.49
7.4.220.0140.00716.69
7.4.210.0130.00716.50
7.4.200.0040.00416.67
7.4.160.0080.00816.43
7.4.150.0060.01217.40
7.4.140.0140.00417.86
7.4.130.0070.00916.49
7.4.120.0140.00416.62
7.4.110.0090.00916.48
7.4.100.0070.01016.51
7.4.90.0210.00316.69
7.4.80.0090.00919.39
7.4.70.0070.01016.66
7.4.60.0180.00516.73
7.4.50.0000.00816.62
7.4.40.0090.01216.49
7.4.30.0160.00016.46
7.4.00.0100.00714.90
7.3.330.0000.00613.25
7.3.320.0000.00513.41
7.3.310.0000.00716.32
7.3.300.0000.00716.46
7.3.290.0100.00816.39
7.3.280.0050.01216.37
7.3.270.0120.00617.40
7.3.260.0060.01216.52
7.3.250.0080.01016.42
7.3.240.0030.01416.41
7.3.230.0170.00716.52
7.3.210.0110.00516.46
7.3.200.0140.00719.39
7.3.190.0070.01416.42
7.3.180.0090.01216.40
7.3.170.0110.00816.42
7.3.160.0160.00016.46
7.3.120.0030.01314.83
7.3.110.0060.01015.04
7.3.100.0070.00714.78
7.3.90.0090.00614.91
7.3.80.0030.01014.62
7.3.70.0000.01214.63
7.3.60.0060.00614.91
7.3.50.0080.00414.68
7.3.40.0040.00814.99
7.3.30.0000.01514.91
7.3.20.0100.00316.64
7.3.10.0030.00616.50
7.3.00.0060.00616.58
7.2.330.0090.00916.71
7.2.320.0160.00816.75
7.2.310.0070.01016.39
7.2.300.0110.00716.77
7.2.290.0070.01416.82
7.2.250.0090.00615.19
7.2.240.0070.00715.03
7.2.230.0000.01315.20
7.2.220.0030.00714.80
7.2.210.0090.00315.35
7.2.200.0060.00315.04
7.2.190.0030.01014.93
7.2.180.0030.00715.02
7.2.170.0070.00715.03
7.2.80.0030.01016.60
7.2.60.0070.00716.99
7.2.00.0070.01119.48
7.1.330.0100.00315.76
7.1.320.0070.00715.91
7.1.310.0070.00416.13
7.1.300.0060.00315.99
7.1.290.0030.00615.44
7.1.280.0040.00816.02
7.1.270.0050.00515.84
7.1.260.0040.00815.55
7.1.200.0060.00915.84
7.1.100.0030.00617.98
7.1.70.0110.00717.27
7.1.60.0090.01219.11
7.1.50.0140.00717.02
7.1.00.0000.08022.35
7.0.200.0000.00716.86
7.0.140.0030.07322.00
7.0.60.0070.06719.95
7.0.50.0030.07717.91
7.0.40.0070.09320.24
7.0.30.0130.06320.34
7.0.20.0230.04020.16
7.0.10.0100.08020.30
7.0.00.0070.08020.22
5.6.280.0070.09020.90
5.6.210.0070.07020.53
5.6.200.0030.04318.16
5.6.190.0070.09020.68
5.6.180.0200.06720.48
5.6.170.0270.08020.46
5.6.160.0030.05720.50
5.6.150.0200.06718.19
5.6.140.0070.08018.12
5.6.130.0070.08718.17
5.6.120.0170.07321.14
5.6.110.0070.07320.98
5.6.100.0130.08021.12
5.6.90.0130.04020.98
5.6.80.0130.07720.40
5.6.70.4430.03720.38
5.5.350.0170.06320.43
5.5.340.0070.07718.02
5.5.330.0030.09320.21
5.5.320.0100.05020.27
5.5.310.0230.04020.51
5.5.300.0070.05018.08
5.5.290.0200.06717.95
5.5.280.0030.04320.87
5.5.270.0030.08720.95
5.5.260.0130.05020.89
5.5.250.0030.04720.58
5.5.240.0370.06020.37
5.4.450.0830.04319.30
5.4.440.0730.06719.34
5.4.430.0570.06019.59
5.4.420.0670.00019.31
5.4.410.0670.00019.57
5.4.400.0600.00019.23
5.4.390.0670.00019.24
5.4.380.0670.00019.22
5.4.370.0770.00019.10
5.4.360.0630.00019.22
5.4.350.0670.00019.12
5.4.340.0030.03712.02
5.4.320.0040.03912.50
5.4.310.0040.04012.50
5.4.300.0060.03912.51
5.4.290.0040.04212.50
5.4.280.0070.04112.40
5.4.270.0090.03412.40
5.4.260.0040.04112.40
5.4.250.0060.04012.39
5.4.240.0060.03712.39
5.4.230.0070.03712.39
5.4.220.0040.03812.39
5.4.210.0080.03412.39
5.4.200.0070.03712.39
5.4.190.0040.03712.38
5.4.180.0050.03712.39
5.4.170.0040.03912.39
5.4.160.0030.03912.39
5.4.150.0090.04712.39
5.4.140.0100.04212.07
5.4.130.0040.03612.05
5.4.120.0080.05012.02
5.4.110.0060.04412.01
5.4.100.0050.03512.02
5.4.90.0070.03512.01
5.4.80.0080.03612.01
5.4.70.0050.03912.00
5.4.60.0090.03212.01
5.4.50.0080.03312.01
5.4.40.0070.03712.00
5.4.30.0060.03712.00
5.4.20.0060.03511.99
5.4.10.0060.03611.99
5.4.00.0050.03811.48
5.3.290.0050.04012.80
5.3.280.0050.03812.71
5.3.270.0030.04312.72
5.3.260.0070.03712.72
5.3.250.0050.03812.72
5.3.240.0070.03712.72
5.3.230.0070.04612.71
5.3.220.0130.03812.68
5.3.210.0050.04612.68
5.3.200.0070.03712.68
5.3.190.0050.04712.68
5.3.180.0090.04012.67
5.3.170.0090.03812.66
5.3.160.0040.04012.67
5.3.150.0070.03712.68
5.3.140.0050.03712.66
5.3.130.0070.03812.66
5.3.120.0040.04112.66
5.3.110.0100.03512.66
5.3.100.0090.03412.13
5.3.90.0080.04712.11
5.3.80.0100.03412.09
5.3.70.0100.04712.09
5.3.60.0040.03812.08
5.3.50.0060.04012.02
5.3.40.0040.03812.02
5.3.30.0070.03411.98
5.3.20.0030.03811.77
5.3.10.0060.03411.74
5.3.00.0060.03511.71
5.2.170.0070.0289.21
5.2.160.0030.0319.21
5.2.150.0030.0329.22
5.2.140.0070.0289.21
5.2.130.0040.0309.17
5.2.120.0030.0309.17
5.2.110.0040.0309.18
5.2.100.0030.0309.18
5.2.90.0070.0269.18
5.2.80.0050.0299.17
5.2.70.0100.0299.18
5.2.60.0070.0299.12
5.2.50.0020.0329.09
5.2.40.0040.0299.07
5.2.30.0050.0299.05
5.2.20.0040.0299.04
5.2.10.0030.0298.95
5.2.00.0060.0278.81
5.1.60.0070.0208.09
5.1.50.0040.0248.09
5.1.40.0020.0268.07
5.1.30.0040.0278.42
5.1.20.0040.0278.44
5.1.10.0070.0298.16
5.1.00.0030.0288.16
5.0.50.0030.0226.64
5.0.40.0030.0196.51
5.0.30.0030.0326.31
5.0.20.0050.0176.28
5.0.10.0040.0196.27
5.0.00.0040.0296.26
4.4.90.0040.0144.78
4.4.80.0030.0154.75
4.4.70.0010.0164.75
4.4.60.0010.0174.76
4.4.50.0010.0164.77
4.4.40.0040.0244.71
4.4.30.0040.0144.76
4.4.20.0040.0144.85
4.4.10.0050.0134.85
4.4.00.0040.0234.76
4.3.110.0020.0164.67
4.3.100.0020.0154.67
4.3.90.0020.0154.63
4.3.80.0010.0254.58
4.3.70.0030.0144.63
4.3.60.0010.0164.63
4.3.50.0020.0164.63
4.3.40.0040.0234.54
4.3.30.0020.0163.30
4.3.20.0020.0163.28
4.3.10.0030.0143.24
4.3.00.0100.0236.64

preferences:
37.31 ms | 401 KiB | 5 Q