3v4l.org

run code in 300+ PHP versions simultaneously
<?php function isCorrect($string) { $string{strlen($string)-1}; } $string = '()'; var_dump($string{strlen($string)-1}); //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)
8.3.60.0110.00318.56
8.3.50.0120.00316.19
8.3.40.0090.00618.71
8.3.30.0090.00618.95
8.3.20.0140.00020.07
8.3.10.0040.00423.66
8.3.00.0050.00319.12
8.2.180.0110.00716.50
8.2.170.0140.00722.96
8.2.160.0120.00318.84
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00420.51
8.2.110.0060.00322.23
8.2.100.0080.00417.50
8.2.90.0030.00518.95
8.2.80.0000.00817.97
8.2.70.0060.00617.50
8.2.60.0040.00417.68
8.2.50.0000.00818.07
8.2.40.0080.00019.71
8.2.30.0040.00417.80
8.2.20.0030.00617.46
8.2.10.0030.00517.80
8.2.00.0000.00717.46
8.1.270.0050.00323.92
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0090.00023.96
8.1.230.0080.00419.13
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0050.00516.99
8.1.190.0040.00417.23
8.1.180.0090.00018.10
8.1.170.0040.00418.58
8.1.160.0080.00021.87
8.1.150.0040.00418.76
8.1.140.0000.00717.26
8.1.130.0040.00417.69
8.1.120.0030.00417.31
8.1.110.0040.00417.25
8.1.100.0000.00817.26
8.1.90.0050.00517.29
8.1.80.0080.00017.27
8.1.70.0030.00317.34
8.1.60.0040.00717.34
8.1.50.0030.00517.29
8.1.40.0040.00417.39
8.1.30.0040.00417.47
8.1.20.0000.00717.36
8.1.10.0040.00417.36
8.1.00.0040.00417.36
8.0.300.0000.00718.77
8.0.290.0040.00416.63
8.0.280.0030.00318.26
8.0.270.0030.00317.18
8.0.260.0070.00017.12
8.0.250.0070.00016.80
8.0.240.0040.00416.87
8.0.230.0000.00716.91
8.0.220.0000.00716.84
8.0.210.0070.00016.81
8.0.200.0040.00416.85
8.0.190.0030.00616.86
8.0.180.0000.00716.83
8.0.170.0030.00616.71
8.0.160.0070.00016.74
8.0.150.0070.00016.82
8.0.140.0000.00716.74
8.0.130.0000.00513.29
8.0.120.0080.00016.68
8.0.110.0020.00516.74
8.0.100.0040.00416.88
8.0.90.0040.00416.71
8.0.80.0070.01116.73
8.0.70.0040.00416.78
8.0.60.0070.00016.75
8.0.50.0000.00716.85
8.0.30.0140.00816.93
8.0.20.0110.01017.40
8.0.10.0000.00716.90
8.0.00.0050.01216.71
7.4.330.0050.00015.02
7.4.320.0000.00716.44
7.4.300.0030.00316.50
7.4.290.0050.00216.36
7.4.280.0070.00016.52
7.4.270.0000.00816.58
7.4.260.0070.00016.42
7.4.250.0000.00816.45
7.4.240.0050.00316.49
7.4.230.0070.00016.56
7.4.220.0130.01516.47
7.4.210.0000.01316.54
7.4.200.0030.00316.41
7.4.160.0090.01416.43
7.4.150.0040.01517.40
7.4.140.0120.00917.86
7.4.130.0120.00516.57
7.4.120.0060.01116.53
7.4.110.0030.01416.61
7.4.100.0030.01516.39
7.4.90.0080.00916.52
7.4.80.0130.00319.39
7.4.70.0030.01316.50
7.4.60.0110.00416.45
7.4.50.0090.00016.48
7.4.40.0140.00316.65
7.4.30.0060.01016.37
7.4.00.0060.00914.98
7.3.330.0000.00613.33
7.3.320.0030.00313.31
7.3.310.0000.00616.07
7.3.300.0030.00316.31
7.3.290.0110.00716.27
7.3.280.0120.00716.28
7.3.270.0230.00017.40
7.3.260.0060.01216.59
7.3.250.0090.01116.41
7.3.240.0080.00816.25
7.3.230.0040.01216.42
7.3.210.0030.01316.26
7.3.200.0100.01019.39
7.3.190.0120.00916.39
7.3.180.0150.00616.50
7.3.170.0040.01616.36
7.3.160.0170.00316.21
7.3.120.0070.01114.95
7.3.110.0040.00814.85
7.3.100.0060.00614.66
7.3.90.0030.01014.62
7.3.80.0060.01014.56
7.3.70.0060.00614.63
7.3.60.0000.00814.58
7.3.50.0100.00615.02
7.3.40.0030.00914.90
7.3.30.0100.00714.78
7.3.20.0070.00316.63
7.3.10.0060.00616.76
7.3.00.0060.00616.62
7.2.330.0100.00716.59
7.2.320.0140.00316.59
7.2.310.0140.00316.43
7.2.300.0030.01316.65
7.2.290.0130.01016.62
7.2.250.0110.00714.78
7.2.240.0100.00715.15
7.2.230.0030.00714.88
7.2.220.0070.00714.85
7.2.210.0030.01414.94
7.2.200.0030.01015.12
7.2.190.0070.00715.11
7.2.180.0000.01314.82
7.2.170.0100.00315.02
7.2.80.0030.01016.41
7.2.00.0030.01019.15
7.1.330.0070.00715.96
7.1.320.0030.01015.98
7.1.310.0180.00015.79
7.1.300.0090.00615.98
7.1.290.0040.00815.77
7.1.280.0080.00415.77
7.1.270.0070.00715.58
7.1.260.0070.00715.54
7.1.200.0030.01015.74
7.1.100.0040.01117.95
7.1.70.0030.00617.26
7.1.60.0060.01919.11
7.1.50.0080.00817.02
7.1.00.0030.07022.54
7.0.200.0030.00616.94
7.0.140.0030.07022.15
7.0.60.0100.07719.94
7.0.50.0000.05717.81
7.0.40.0030.09020.18
7.0.30.0270.06720.30
7.0.20.0200.06020.24
7.0.10.0070.08020.08
7.0.00.0030.06020.25
5.6.280.0030.07320.89
5.6.210.0030.04320.71
5.6.200.0030.04718.18
5.6.190.0070.04320.58
5.6.180.0400.06720.52
5.6.170.0270.08020.56
5.6.160.0070.08720.59
5.6.150.0030.04018.20
5.6.140.0130.06018.27
5.6.130.0130.05318.15
5.6.120.0000.04321.05
5.6.110.0130.08721.13
5.6.100.0070.08020.98
5.6.90.0130.04321.04
5.6.80.0030.03720.41
5.6.70.4070.03720.54
5.5.350.0130.08020.46
5.5.340.0100.07718.09
5.5.330.0100.03720.43
5.5.320.0270.07320.24
5.5.310.0300.05720.35
5.5.300.0070.07718.10
5.5.290.0200.06317.98
5.5.280.0170.07020.69
5.5.270.0030.05720.79
5.5.260.0030.04720.87
5.5.250.0030.08720.61
5.5.240.0330.07020.16
5.4.450.0930.08019.47
5.4.440.0770.06019.56
5.4.430.0100.06319.42
5.4.420.0670.00019.52
5.4.410.0630.00019.25
5.4.400.0630.00019.24
5.4.390.0630.00019.21
5.4.380.0630.00019.07
5.4.370.0630.00019.02
5.4.360.0630.00019.02
5.4.350.0670.00019.06
5.4.340.0060.03512.02
5.4.320.0080.03512.50
5.4.310.0070.03712.50
5.4.300.0060.03712.50
5.4.290.0060.03812.50
5.4.280.0060.03712.40
5.4.270.0070.03712.39
5.4.260.0070.03912.39
5.4.250.0040.04112.40
5.4.240.0060.03512.40
5.4.230.0030.04012.39
5.4.220.0100.03212.39
5.4.210.0070.03512.39
5.4.200.0050.03912.39
5.4.190.0090.03312.39
5.4.180.0020.03912.39
5.4.170.0060.03912.39
5.4.160.0060.03612.39
5.4.150.0070.03712.39
5.4.140.0040.04012.07
5.4.130.0060.03612.05
5.4.120.0070.03312.02
5.4.110.0070.03412.01
5.4.100.0030.03812.02
5.4.90.0070.03512.01
5.4.80.0020.04012.02
5.4.70.0050.03812.01
5.4.60.0090.03712.01
5.4.50.0060.03612.01
5.4.40.0120.03512.00
5.4.30.0060.03711.99
5.4.20.0100.03112.00
5.4.10.0060.03512.00
5.4.00.0090.03311.48
5.3.290.0060.03912.80
5.3.280.0110.03312.71
5.3.270.0060.03912.72
5.3.260.0040.04212.72
5.3.250.0080.03512.72
5.3.240.0040.04312.71
5.3.230.0080.04412.71
5.3.220.0080.03512.68
5.3.210.0100.03512.68
5.3.200.0070.03512.68
5.3.190.0060.03712.68
5.3.180.0050.03712.67
5.3.170.0070.03512.67
5.3.160.0060.03712.67
5.3.150.0040.03912.67
5.3.140.0050.03712.66
5.3.130.0070.04212.65
5.3.120.0040.04012.66
5.3.110.0060.04312.66
5.3.100.0050.03712.11
5.3.90.0070.03412.10
5.3.80.0100.03212.09
5.3.70.0060.03512.09
5.3.60.0090.03212.07
5.3.50.0050.03712.01
5.3.40.0070.03812.02
5.3.30.0030.03711.98
5.3.20.0070.04611.75
5.3.10.0040.05011.73
5.3.00.0140.04111.71
5.2.170.0060.0399.21
5.2.160.0040.0419.21
5.2.150.0070.0359.21
5.2.140.0060.0309.21
5.2.130.0030.0329.17
5.2.120.0050.0299.17
5.2.110.0040.0329.17
5.2.100.0050.0289.17
5.2.90.0060.0309.17
5.2.80.0050.0299.16
5.2.70.0040.0309.16
5.2.60.0060.0339.13
5.2.50.0040.0339.09
5.2.40.0050.0319.06
5.2.30.0050.0319.04
5.2.20.0060.0339.04
5.2.10.0030.0328.94
5.2.00.0090.0278.80
5.1.60.0070.0228.09
5.1.50.0030.0268.09
5.1.40.0070.0218.05
5.1.30.0040.0268.41
5.1.20.0050.0258.43
5.1.10.0030.0268.16
5.1.00.0060.0248.17
5.0.50.0040.0216.64
5.0.40.0050.0196.50
5.0.30.0060.0306.30
5.0.20.0040.0196.28
5.0.10.0020.0216.26
5.0.00.0020.0316.25
4.4.90.0050.0134.78
4.4.80.0020.0174.75
4.4.70.0050.0164.76
4.4.60.0030.0194.75
4.4.50.0020.0184.77
4.4.40.0030.0254.71
4.4.30.0020.0174.76
4.4.20.0020.0234.84
4.4.10.0030.0154.85
4.4.00.0040.0264.76
4.3.110.0050.0134.67
4.3.100.0020.0164.67
4.3.90.0060.0114.63
4.3.80.0000.0274.58
4.3.70.0040.0134.63
4.3.60.0010.0164.63
4.3.50.0010.0174.63
4.3.40.0030.0234.54
4.3.30.0020.0173.30
4.3.20.0030.0153.27
4.3.10.0030.0143.24
4.3.00.0200.0236.63

preferences:
45.51 ms | 400 KiB | 5 Q