3v4l.org

run code in 300+ PHP versions simultaneously
<?php $s = "01001010101101111011101001010100010101101010101010101101101010010110110110"; $n = 10; for( $i = $best = $bestCount = 0; ( ($count = @substr_count( $s, 1, $i, $n )) > $bestCount && (($best = $i) && ($bestCount = $count)) ) || $i < strlen($s); $i++ ); var_dump($i,$best,$bestCount);

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)
8.3.60.0110.00716.75
8.3.50.0100.01022.12
8.3.40.0120.00618.95
8.3.30.0070.01119.22
8.3.20.0000.00720.30
8.3.10.0040.00421.90
8.3.00.0000.00817.93
8.2.180.0100.01016.75
8.2.170.0110.00322.96
8.2.160.0070.00719.29
8.2.150.0050.00324.18
8.2.140.0060.00324.66
8.2.130.0080.00026.16
8.2.120.0080.00020.50
8.2.110.0060.00320.33
8.2.100.0040.00717.91
8.2.90.0040.00418.16
8.2.80.0110.00017.97
8.2.70.0050.00317.75
8.2.60.0050.00317.80
8.2.50.0060.00318.07
8.2.40.0040.00418.16
8.2.30.0070.00018.05
8.2.20.0000.00817.62
8.2.10.0080.00018.13
8.2.00.0040.00417.86
8.1.280.0150.00025.92
8.1.270.0030.00522.20
8.1.260.0000.00826.35
8.1.250.0030.00628.09
8.1.240.0100.01023.73
8.1.230.0040.00722.07
8.1.220.0000.00817.79
8.1.210.0040.00418.86
8.1.200.0030.00617.47
8.1.190.0060.01017.41
8.1.180.0080.00018.72
8.1.170.0030.00618.62
8.1.160.0070.00021.89
8.1.150.0040.00418.87
8.1.140.0040.00417.43
8.1.130.0000.00717.83
8.1.120.0040.00417.46
8.1.110.0000.00817.47
8.1.100.0050.00217.43
8.1.90.0070.00017.49
8.1.80.0000.00717.45
8.1.70.0000.00717.43
8.1.60.0070.00017.62
8.1.50.0000.00817.51
8.1.40.0040.00417.50
8.1.30.0040.00417.63
8.1.20.0000.00817.59
8.1.10.0040.00417.52
8.1.00.0000.00917.43
8.0.300.0050.00320.13
8.0.290.0040.00417.04
8.0.280.0040.00418.33
8.0.270.0080.00017.25
8.0.260.0030.00317.17
8.0.250.0000.00717.03
8.0.240.0040.00417.01
8.0.230.0000.00716.99
8.0.220.0000.01016.90
8.0.210.0040.00416.87
8.0.200.0000.00617.03
8.0.190.0070.00016.99
8.0.180.0030.00716.90
8.0.170.0030.00516.80
8.0.160.0000.00717.04
8.0.150.0070.00016.92
8.0.140.0040.00416.86
8.0.130.0060.00013.32
8.0.120.0050.00316.89
8.0.110.0050.00316.88
8.0.100.0000.00816.94
8.0.90.0040.00416.86
8.0.80.0060.01416.96
8.0.70.0020.00516.77
8.0.60.0040.00417.02
8.0.50.0040.00416.96
8.0.30.0080.01016.95
8.0.20.0090.01317.40
8.0.10.0040.00416.91
8.0.00.0060.01216.89
7.4.330.0020.00215.03
7.4.320.0060.00016.59
7.4.300.0060.00016.40
7.4.290.0000.00816.39
7.4.280.0070.00016.41
7.4.270.0000.00716.48
7.4.260.0060.00016.50
7.4.250.0080.00016.56
7.4.240.0020.00516.56
7.4.230.0070.00016.39
7.4.220.0030.01716.45
7.4.210.0070.00616.41
7.4.200.0030.00516.33
7.4.160.0060.00916.39
7.4.150.0030.01417.40
7.4.140.0130.00817.86
7.4.130.0080.01216.56
7.4.120.0140.00316.50
7.4.110.0100.01016.29
7.4.100.0030.01416.45
7.4.90.0000.01716.42
7.4.80.0150.00319.39
7.4.70.0100.01416.61
7.4.60.0090.00916.54
7.4.50.0000.00916.47
7.4.40.0090.00916.41
7.4.30.0120.00816.35
7.4.00.0030.00914.93
7.3.330.0030.00313.07
7.3.320.0060.00013.22
7.3.310.0030.00316.42
7.3.300.0070.00016.40
7.3.290.0050.01216.47
7.3.280.0100.00616.43
7.3.270.0180.00017.40
7.3.260.0060.01216.25
7.3.250.0150.00516.45
7.3.240.0100.00616.37
7.3.230.0070.01016.39
7.3.210.0100.00716.40
7.3.200.0140.00619.39
7.3.190.0080.01116.42
7.3.180.0100.01016.59
7.3.170.0090.00616.49
7.3.160.0060.01516.39
7.2.330.0090.00916.50
7.2.320.0120.00916.48
7.2.310.0070.01016.71
7.2.300.0030.01416.62
7.2.290.0040.01416.70
7.2.80.0140.00016.74
7.2.60.0070.00716.79
7.2.00.0030.00619.57
7.1.200.0030.01015.52
7.1.100.0030.01018.18
7.1.70.0040.00417.05
7.1.60.0040.01819.29
7.1.50.0140.01116.86
7.1.00.0030.07722.38
7.0.200.0660.01014.93
7.0.140.0000.07322.02
7.0.60.0270.08020.00
7.0.50.0030.08317.84
7.0.40.0100.08320.08
7.0.30.0270.08320.34
7.0.20.0500.07320.24
7.0.10.0070.07720.02
7.0.00.0100.04720.16
5.6.210.0100.07720.52
5.6.200.0100.04718.21
5.6.190.0030.04720.56
5.6.180.0470.07320.43
5.6.170.1300.03720.72
5.6.160.0070.05318.21
5.6.150.0030.06718.07
5.6.140.0130.06718.19
5.6.130.0070.07718.23
5.6.120.0030.08720.99
5.6.110.0070.09020.98
5.6.100.0070.06720.88
5.6.90.0030.06020.99
5.6.80.0030.08020.43
5.5.350.0100.03720.43
5.5.340.0030.08718.00
5.5.330.0100.07720.13
5.5.320.0370.05720.50
5.5.310.0270.04720.17
5.5.300.0030.06018.01
5.5.290.0000.04317.99
5.5.280.0000.04320.79
5.5.270.0030.08720.67
5.5.260.0130.07720.71
5.5.250.0070.05020.65
5.5.240.0100.08020.27
5.4.450.0300.05719.32
5.4.440.0630.07319.61
5.4.430.0130.05019.62
5.4.420.0130.07319.68
5.4.410.0130.05019.35
5.4.400.0000.06019.16
5.4.390.0100.05319.00
5.4.380.0200.08018.49
5.4.370.0170.05318.65
5.4.360.0200.05318.72
5.4.350.0170.05013.73
5.4.340.0130.05013.72
5.4.320.0330.05314.14
5.4.310.0200.04314.18
5.4.300.0530.04314.14
5.4.290.0070.05714.28
5.4.280.0130.05014.08
5.4.270.0200.04314.10
5.4.260.0230.04314.02
5.4.250.0330.06714.03
5.4.240.0100.05314.02
5.4.230.0170.05314.07
5.4.220.0170.05714.07
5.4.210.0200.05314.02
5.4.200.0170.06014.02
5.4.190.0530.05314.00
5.4.180.0330.04714.07
5.4.170.0270.05314.18
5.4.160.0600.04714.03
5.4.150.0200.05314.07
5.4.140.0130.06013.88
5.4.130.0130.06713.70
5.4.120.0130.05013.63
5.4.110.0100.06013.65
5.4.100.0170.05013.64
5.4.90.0130.05013.64
5.4.80.0030.05713.73
5.4.70.0030.05313.68
5.4.60.0130.04713.66
5.4.50.0200.04313.68
5.4.40.0130.05013.81
5.4.30.0200.05313.63
5.4.20.0230.04713.62
5.4.10.0230.04713.68
5.4.00.0170.05013.14
5.3.290.0270.04314.51
5.3.280.0470.05014.61
5.3.270.0430.05014.63
5.3.260.0430.07014.45
5.3.250.0100.05014.64
5.3.240.0330.05014.50
5.3.230.0170.05314.48
5.3.220.0130.06014.48
5.3.210.0030.06314.48
5.3.200.0100.05014.46
5.3.190.0200.04714.41
5.3.180.0200.04314.48
5.3.170.0170.04714.41
5.3.160.0170.05014.56
5.3.150.0130.05314.48
5.3.140.0200.04714.42
5.3.130.0400.04314.46
5.3.120.0330.05714.55
5.3.110.0170.04714.46
5.3.100.0130.05313.92
5.3.90.0300.05713.94
5.3.80.0170.04013.91
5.3.70.0170.04713.91
5.3.60.0200.04313.93
5.3.50.0200.04013.81
5.3.40.0100.05013.91
5.3.30.0230.05013.93
5.3.20.0030.05313.59
5.3.10.0130.04313.58
5.3.00.0130.04713.63
5.2.170.0270.02711.00
5.2.160.0100.03011.08
5.2.150.0130.03711.23
5.2.140.0130.03011.06
5.2.130.0100.04011.01
5.2.120.0130.03711.10
5.2.110.0170.02711.18
5.2.100.0200.03011.07
5.2.90.0070.05011.02
5.2.80.0070.05310.95
5.2.70.0130.04011.14
5.2.60.0270.02711.02
5.2.50.0100.04310.92
5.2.40.0030.05011.07
5.2.30.0170.03711.02
5.2.20.0030.05010.95
5.2.10.0130.03710.82
5.2.00.0170.03310.70
5.1.60.0070.03310.05
5.1.50.0300.0339.96
5.1.40.0530.0339.99
5.1.30.0030.04010.31
5.1.20.0070.03710.50
5.1.10.0130.03010.04
5.1.00.0070.03310.12
5.0.50.0070.0238.63
5.0.40.0070.0278.34
5.0.30.0170.0338.30
5.0.20.0100.0278.32
5.0.10.0170.0208.18
5.0.00.0070.0338.13
4.4.90.0130.0135.82
4.4.80.0030.0235.85
4.4.70.0000.0235.88
4.4.60.0130.0105.81
4.4.50.0030.0205.84
4.4.40.0030.0335.81
4.4.30.0030.0205.85
4.4.20.0030.0235.94
4.4.10.0170.0276.05
4.4.00.0000.0375.86
4.3.110.0070.0205.77
4.3.100.0000.0235.72
4.3.90.0070.0205.75
4.3.80.0000.0335.71
4.3.70.0030.0205.89
4.3.60.0000.0235.81
4.3.50.0000.0235.80
4.3.40.0100.0235.71
4.3.30.0000.0234.61
4.3.20.0030.0204.64
4.3.10.0070.0174.42
4.3.00.0130.0206.73

preferences:
73.27 ms | 401 KiB | 5 Q