3v4l.org

run code in 300+ PHP versions simultaneously
<?php function isCorrect($string) { if (strlen($string) % 2 === 0) { $start = 0; $string2 = ""; for( $i = $start; $i < strlen($string); $i++) { var_dump($string[5]); } return true; } return false; } $string = '({{}})'; isCorrect($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)
8.3.60.0140.00018.27
8.3.50.0120.01221.20
8.3.40.0070.00718.71
8.3.30.0110.00419.03
8.3.20.0030.00520.46
8.3.10.0050.00323.64
8.3.00.0040.00419.25
8.2.180.0060.01016.75
8.2.170.0070.01422.96
8.2.160.0070.00720.32
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0000.00722.01
8.2.110.0060.00322.20
8.2.100.0090.00317.50
8.2.90.0000.00719.17
8.2.80.0060.00317.97
8.2.70.0040.00417.75
8.2.60.0040.00418.05
8.2.50.0000.00818.07
8.2.40.0040.00419.89
8.2.30.0070.00018.13
8.2.20.0000.00717.60
8.2.10.0040.00418.01
8.2.00.0000.00817.80
8.1.280.0110.00425.92
8.1.270.0040.00422.00
8.1.260.0070.00026.35
8.1.250.0000.00828.09
8.1.240.0090.00023.98
8.1.230.0070.00419.15
8.1.220.0040.00417.77
8.1.210.0050.00318.77
8.1.200.0060.00417.00
8.1.190.0000.00817.00
8.1.180.0000.00718.10
8.1.170.0000.00818.45
8.1.160.0070.00021.91
8.1.150.0070.00018.78
8.1.140.0040.00417.39
8.1.130.0000.00717.82
8.1.120.0070.00017.30
8.1.110.0030.00517.41
8.1.100.0040.00417.29
8.1.90.0040.00417.37
8.1.80.0000.00717.45
8.1.70.0030.00317.27
8.1.60.0040.00417.47
8.1.50.0050.00317.55
8.1.40.0080.00017.47
8.1.30.0000.00817.63
8.1.20.0000.00817.56
8.1.10.0090.00017.57
8.1.00.0030.00617.44
8.0.300.0080.00018.77
8.0.290.0040.00416.63
8.0.280.0000.00718.32
8.0.270.0070.00017.26
8.0.260.0030.00317.25
8.0.250.0000.00716.96
8.0.240.0000.00616.96
8.0.230.0040.00416.93
8.0.220.0000.00716.91
8.0.210.0000.00816.93
8.0.200.0000.00716.96
8.0.190.0000.00716.94
8.0.180.0040.00416.93
8.0.170.0080.00016.93
8.0.160.0030.00316.94
8.0.150.0040.00416.94
8.0.140.0070.00016.84
8.0.130.0060.00013.35
8.0.120.0040.00416.90
8.0.110.0000.00716.96
8.0.100.0040.00416.94
8.0.90.0040.00416.69
8.0.80.0130.00716.88
8.0.70.0080.00016.75
8.0.60.0000.00716.96
8.0.50.0070.00016.83
8.0.30.0180.00816.93
8.0.20.0120.00717.40
8.0.10.0080.00016.89
8.0.00.0130.00616.77
7.4.330.0030.00315.02
7.4.320.0000.00616.48
7.4.300.0030.00316.59
7.4.290.0030.00316.65
7.4.280.0080.00316.45
7.4.270.0000.00816.61
7.4.260.0000.00716.46
7.4.250.0040.00416.38
7.4.240.0030.00316.45
7.4.230.0040.00416.62
7.4.220.0160.01016.56
7.4.210.0070.01316.56
7.4.200.0070.00016.71
7.4.160.0160.00016.42
7.4.150.0120.00917.40
7.4.140.0120.01017.86
7.4.130.0050.01116.51
7.4.120.0040.01316.60
7.4.110.0070.01616.30
7.4.100.0070.01116.58
7.4.90.0070.01016.54
7.4.80.0060.01119.39
7.4.70.0030.01416.56
7.4.60.0100.00716.56
7.4.50.0030.00516.27
7.4.40.0070.01416.71
7.4.30.0100.00716.66
7.4.00.0000.01415.14
7.3.330.0000.00613.37
7.3.320.0060.00013.39
7.3.310.0040.00416.25
7.3.300.0030.00316.23
7.3.290.0070.00916.35
7.3.280.0090.00716.31
7.3.270.0050.01117.40
7.3.260.0070.01016.63
7.3.250.0060.01116.54
7.3.240.0130.01016.40
7.3.230.0090.00916.41
7.3.210.0060.00916.47
7.3.200.0040.01919.39
7.3.190.0090.01316.63
7.3.180.0110.00616.53
7.3.170.0190.00316.35
7.3.160.0130.00316.64
7.3.10.0080.00716.41
7.3.00.0010.01316.38
7.2.330.0000.01716.70
7.2.320.0120.01016.62
7.2.310.0150.00916.47
7.2.300.0070.01016.53
7.2.290.0170.00316.83
7.2.130.0070.00816.81
7.2.120.0130.00316.67
7.2.110.0070.00616.62
7.2.100.0040.01016.91
7.2.90.0120.00616.94
7.2.80.0060.00716.91
7.2.70.0080.00616.80
7.2.60.0130.00816.68
7.2.50.0110.00616.77
7.2.40.0100.00916.75
7.2.30.0130.00616.87
7.2.20.0110.01116.66
7.2.10.0060.01116.76
7.2.00.0060.00917.53
7.1.250.0090.00315.57
7.1.100.0000.01718.02
7.1.70.0000.00717.01
7.1.60.0130.00919.11
7.1.50.0130.01016.60
7.1.00.0030.07322.51
7.0.200.0000.01016.94
7.0.140.0000.07321.95
7.0.60.0130.08020.07
7.0.50.0130.06717.85
7.0.40.0100.04020.23
7.0.30.0230.07020.15
7.0.20.0200.05720.15
7.0.10.0170.07720.10
7.0.00.0130.04720.16
5.6.280.0070.07021.07
5.6.210.0070.06020.61
5.6.200.0100.07718.18
5.6.190.0100.08720.64
5.6.180.0270.07020.77
5.6.170.0300.08320.51
5.6.160.0230.06320.54
5.6.150.0030.08718.16
5.6.140.0070.06318.30
5.6.130.0030.05318.15
5.6.120.0130.05321.02
5.6.110.0030.08021.09
5.6.100.0100.06321.14
5.6.90.0230.07320.95
5.6.80.0030.05320.38
5.6.70.4370.04320.44
5.5.350.0070.04720.34
5.5.340.0030.03717.95
5.5.330.0130.03320.28
5.5.320.0170.05020.25
5.5.310.0130.04320.42
5.5.300.0070.08017.98
5.5.290.0000.04318.07
5.5.280.0070.05020.86
5.5.270.0030.04020.77
5.5.260.0030.08320.84
5.5.250.0000.07320.62
5.5.240.0270.07720.13
5.4.450.0770.06019.57
5.4.440.0770.06719.57
5.4.430.0530.06319.18
5.4.420.0630.00019.52
5.4.410.0670.00019.45
5.4.400.0630.00019.27
5.4.390.0730.00019.15
5.4.380.0670.00019.24
5.4.370.0670.00019.08
5.4.360.0700.00019.08
5.4.350.0670.00019.04
5.4.340.0050.03412.02
5.4.320.0110.03312.51
5.4.310.0060.03812.50
5.4.300.0050.03812.50
5.4.290.0070.03812.50
5.4.280.0060.03512.40
5.4.270.0050.03612.40
5.4.260.0030.03912.40
5.4.250.0060.03612.39
5.4.240.0070.03612.39
5.4.230.0090.03312.39
5.4.220.0050.03512.39
5.4.210.0020.03812.39
5.4.200.0050.03712.39
5.4.190.0030.04012.39
5.4.180.0040.03612.39
5.4.170.0030.03712.39
5.4.160.0050.03512.39
5.4.150.0080.03212.39
5.4.140.0080.03412.07
5.4.130.0040.03512.06
5.4.120.0040.03612.02
5.4.110.0080.03312.01
5.4.100.0060.03412.02
5.4.90.0060.03512.01
5.4.80.0070.03512.02
5.4.70.0070.03312.01
5.4.60.0030.03612.01
5.4.50.0050.03712.01
5.4.40.0040.03912.00
5.4.30.0080.03412.00
5.4.20.0100.03411.99
5.4.10.0080.03111.99
5.4.00.0060.04411.48
5.3.290.0080.04112.80
5.3.280.0080.03612.71
5.3.270.0070.03912.72
5.3.260.0090.03512.72
5.3.250.0060.03812.72
5.3.240.0070.03712.72
5.3.230.0080.03512.71
5.3.220.0080.03412.68
5.3.210.0090.03612.68
5.3.200.0060.03512.68
5.3.190.0080.03412.68
5.3.180.0090.04012.67
5.3.170.0070.03512.67
5.3.160.0070.04212.68
5.3.150.0060.03612.67
5.3.140.0070.03412.66
5.3.130.0060.03712.66
5.3.120.0060.03812.66
5.3.110.0050.03812.65
5.3.100.0040.04412.12
5.3.90.0080.03312.10
5.3.80.0070.03412.09
5.3.70.0060.03512.09
5.3.60.0060.03512.07
5.3.50.0050.03612.02
5.3.40.0040.03812.02
5.3.30.0040.03711.98
5.3.20.0050.03511.76
5.3.10.0030.03611.73
5.3.00.0080.03411.72
5.2.170.0060.0289.21
5.2.160.0050.0289.21
5.2.150.0010.0349.21
5.2.140.0030.0329.21
5.2.130.0040.0299.17
5.2.120.0050.0289.17
5.2.110.0050.0289.18
5.2.100.0030.0299.17
5.2.90.0050.0289.18
5.2.80.0080.0309.16
5.2.70.0100.0309.17
5.2.60.0050.0309.13
5.2.50.0100.0349.10
5.2.40.0040.0289.07
5.2.30.0020.0319.05
5.2.20.0060.0269.04
5.2.10.0030.0328.94
5.2.00.0040.0298.80
5.1.60.0060.0228.09
5.1.50.0050.0238.08
5.1.40.0060.0248.06
5.1.30.0050.0288.41
5.1.20.0030.0298.43
5.1.10.0050.0288.16
5.1.00.0050.0258.16
5.0.50.0050.0226.64
5.0.40.0020.0256.50
5.0.30.0040.0346.31
5.0.20.0030.0196.27
5.0.10.0050.0176.26
5.0.00.0020.0326.25
4.4.90.0010.0184.78
4.4.80.0040.0144.75
4.4.70.0020.0164.75
4.4.60.0020.0164.76
4.4.50.0030.0154.77
4.4.40.0030.0294.71
4.4.30.0050.0154.76
4.4.20.0020.0164.85
4.4.10.0060.0144.85
4.4.00.0040.0234.76
4.3.110.0010.0174.67
4.3.100.0020.0154.67
4.3.90.0060.0194.63
4.3.80.0020.0254.59
4.3.70.0040.0154.63
4.3.60.0040.0134.63
4.3.50.0030.0154.63
4.3.40.0040.0234.54
4.3.30.0020.0153.30
4.3.20.0020.0153.28
4.3.10.0020.0153.24
4.3.00.0070.0276.64

preferences:
40.89 ms | 401 KiB | 5 Q